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1. 0 1 95x Internal Fault 1 2 Unstable load 2 4 Breakdown detected gt setting 3 8 HOLD Step timeout exceeded 4 16 User abort 5 32 Continuity Sense failure detected 6 64 Wiring fault detected 7 128 Arc detected 8 256 1 check lt minimum setting 9 512 1 check gt maximum setting 10 1024 2 check lt minimum setting 11 2048 2 check gt maximum setting 12 4096 INTERLOCK failure 13 8192 HV TRIP activated 14 16384 Switch Matrix unit did not communicate 15 32768 Breakdown detected gt surge drive ability limit for test type 16 65536 95x Overheated 17 131072 Step type incompatible with the model and option content 18 262144 Minimum Loading was not encountered during ramp in a DCW or DCIR type step 19 524288 Breakdown detected gt sustained drive ability limit for test type 20 1048576 A steady or decreasing current was not detected during dwell but the load was otherwise within the limits in a DCIR type step configured to terminate in this manner Page 143 of 151 95x Series Operating Manual April 23 2015 STEPRSLT RESPONSE FIELDS Field Field Format WEIS 0 Not executed 1 Terminated during Ramp 1 lt NR1 gt 2 Terminated during Dwell during delay 3 Terminated during Dwell after delay Others Terminated 2 lt NR3 gt Elapse
2. PAUSE de pet ACI DCI BRKDN PULSE HOLD SWITCH 1 Valid Valid Valid Valid Valid Valid Valid Valid Valid Valid 2 Valid Valid Valid Valid Valid Valid Valid Valid Valid Valid 3 Valid Valid Valid Valid Valid Valid Valid Valid Valid Valid Valid in Valid in Valid Valid in Valid in Valid in 4 V V lin A Empty V V V Empty Empty Empty 5 Valid Empty Valid Empty Valid Valid Empty Empty Empty Empty 6 Valid Valid Empty Empty Valid Empty Empty Valid Valid Empty 7 Empty Empty Empty Empty Empty Empty Empty Valid Valid Empty 8 pee Valid Valid Valid Valid Valid Valid Empty Empty Empty Empty 9 mele oF Valid Valid Valid Valid Valid Valid Empty Empty Empty Empty 10 AQUA Valid Valid Valid Valid Valid Valid Empty Empty Empty Empty 11 mone or Valid Valid Valid Valid Valid Valid Empty Empty Empty Empty Valid or 12 Empty Empty Empty Empty Valid Empty Empty Empty Empty Empty Page 144 of 151 95x Series Operating Manual April 23 2015 Valid or i 13 Empty Empty Empty Empty Valid Empty Empty Empty Empty Empty Valid or 14 Empty Empty Empty Empty Valid Empty Empty Empty Empty Empty Valid or 15 Empty Empty Empty Empty Valid Empty Empty Empty Empty Empty 16 Valid or Valid or Emot Emot Validor Validor Valid or Emot Valid or Emot Empty Empty pty pty Empty Empty Empty pty Empty pty 17 Valid or Valid or Emot Emot Validor Valid or V
3. 1 lt STRING gt DCEZ 2 lt NR3 gt Test Voltage in V 3 lt NR3 gt Ramp Time in seconds Fi lt NR3 gt Dwell time in seconds lt EMPTY gt Step is to be user terminated 5 lt NR3 gt Minimum Leakage Limit in A 6 lt NR3 gt Maximum Leakage Limit in A ABORT Abort on failure E RINDS CONT Continue on failure lt EMPTY gt p lt MISSING gt Load is not grounded lt STRING gt GND Load is grounded only valid if option HSS is fitted ISO Load is not grounded Example ADD DCEZ 1000 0 1 5 60 0 0 0 0 005 ABORT Configures the following in order A DCez type test step 1000V test voltage 1 5 second ramp time 60 second dwell time No minimum leakage current limit 5mA maximum leakage current limit Page 133 of 151 95x Series Operating Manual April 23 2015 Abort test sequence if fails DUT is isolated since field 8 is missing DCW CONFIGURATION FIELDS Field Field Format Description 1 lt STRING gt DCW 2 lt NR3 gt Test Voltage in V 3 lt NR3 gt Breakdown Limit in A 4 lt NR3 gt Ramp Time in seconds 5 lt NR3 gt Dwell time in seconds lt EMPTY gt Step is to be user terminated 6 lt NR3 gt Pre check delay in seconds AMPS Leakage limits are in Amps RINGS OHMS Leakage limits are in Q 8 lt NR3 gt Minimum Leakage Limit in A or Q 9 lt NR3 gt Maximum Leakage Limit in A or Q lt EMPTY gt No maximum lim
4. ccccccccccesssssssesecececsesssaeseeececseseeaeseeeescsesesaeeeeeesseeseaaeas 41 SECTION G A TEST STE S ee e e i ea de ee A A sev ay A AAA E dd 42 Choosing Within the Voltage Withstand and Leakage Testing GrOUP oooooocnncnccononoonnnnnnnnononononnnnncnnnnnnnnnnonccnnononnnnns 42 Choosing AC DCor PULSE Testing ena A ine Sees E A A i eaan aa 43 Choosing the LIM A a E A 43 AC Voltage Withstand and Leakage Testing ACez ACW and ACCAP ccccccceesscceessscecessaececsssseceeseseceesaeeeeesseese 46 Actions While RUNMIN eE ia 47 Configuring eaae n e A A AA t A er e ae 47 Connecting to the DUT aia ds 50 Lead Compin atO a aid 52 DEN EEE EAA E A TE EE EAA E A EE 52 S DEGITIGATI ONS ii E AN E A EA A E A E 53 DC Voltage Withstand and Leakage Testing DCez DCW and DCIR cooocccnnocnnccoconanoconnnoconononononnnononnancnnnannncconoss 56 Page 3 of 151 95x Series Operating Manual April 23 2015 Paterno AIA a EA RUN e A A duceduse vant ionedecetass A E AA 57 ola AULAN aTe AEA EE E IERA LAE A E E A LEA E A T 58 Connecting COANE D O E EEEE E AEE A cane cadeesunabhgastesdede tulunteneeseesecaden noedeeaevoncaareeaSegeoene 62 EKo o a Ao aE T A A A ATA E 63 EXGIMPIOS E E E ETA A AE A AAE EN EO 64 SECC AE EE A Ea EEE a A EELE EE Eie EEF 66 Pulsed Voltage Withstand Testing PULSE cc cccccssscccsssseceessssecesssececsesseceesseeeceesaececsseseceessseeceeaaececesseceesaeeeceeaas 69 Actions WAIE RUN 70 CONTESTA A A tuamnocnve
5. BEEP START BEEP PASS lt NR1 gt BEEP PASS BEEP FAIL lt NR1 gt BEEP FAIL BEEP KEY lt NR1 gt BEEP KEY CONTSENSE lt BOOL gt CONTSENSE DIO START DIO ABORT lt STRING gt DIO ABORT DIO INTERLOCK lt STRING gt DIO INTERLOCK Configures how a test sequence may be rerun from the front panel 0 enable fast rerun 1 enable fast rerun if pass 2 disable fast rerun Configures the maximum allowed discharge current during DCez DCW MAXDISCHARGE lt NR3 gt and DCIR type steps to the lt NR3 gt value in amps values between 1mA and 200mA are valid FASTRERUN lt NR1 gt Page 129 of 151 95x Series Operating Manual April 23 2015 Command Description Responds with the lt NR3 gt value of the maximum allowed discharge MAXDISCHARGE current setting Configures the enable for minimum loading detection during the ramp period of DCW and DCIR steps MINLOAD lt BOOL gt 0 or N Minimum loading is not detected 1 or Y Minimum loading is detected as configured in each individual test step Configures the switch matrix unit control setting NONE no external switch matrix units 948 a single 948i using RS232 964SER a single 964i using RS232 964VICL1 a single 964i using VICL 964VICL2 two 964i using VICL 964VICL3 three 964i using VICL 964VICL4 four 964i using VICL VLIMIT DC lt NR3 gt Configures the maximum DC Voltage available during future test sequences
6. No 1 checked leakage RMSA 1 checked value is RMS leakage current INPHSA 1 checked value is In Phase leakage current 7 lt STRING gt QUADA 1 checked value is Quadrature leakage current RMSO 1 checked value is RMS leakage impedance INPHSO 1 checked value is In Phase leakage impedance QUADO 1 checked value is Quadrature leakage impedance g lt NR3 gt 1 Minimum Leakage Limit in A or Q lt EMPTY gt Only valid if no 1 checked leakage 9 lt NR3 gt 1 Maximum Leakage Limit in A or Q lt EMPTY gt No 1 maximum limit only valid for impedance or no 1 checked leakage NONE No 2 checked leakage RMSA 2 checked value is RMS leakage current INPHSA 2 checked value is In Phase leakage current 10 lt STRING gt QUADA 2 checked value is Quadrature leakage current RMSO 2 checked value is RMS leakage impedance INPHSO 2 checked value is In Phase leakage impedance QUADO 2 checked value is Quadrature leakage impedance A lt NR3 gt 2 Minimum Leakage Limit in A or Q lt EMPTY gt Only valid if no 2 checked leakage T lt NR3 gt 2 Maximum Leakage Limit in A or Q lt EMPTY gt No 2 maximum limit only valid for impedance or no 2 checked leakage i3 lt NR1 gt Time period for arc detection 4 10 15 20 30 or 40 lt EMPTY gt Arc detection disabled TA lt NR1 gt Arc detection limit in mA lt EMPTY gt Only valid if arc detection disabled
7. cccccccssssccccecsesscsseecececeeseeeseceeeceeseseeaeseeeeeceeseeaeseeeesceesesaeeeseeeceese 106 EX AA AAN E ENE ANE LA S 106 SECTION 9 PERIODIC MAINTENANCE coccoocioidon coconnnnindrno neto ninnnna narrate teienei ania eiaeaen aiaiai ia Eiana eeN eat 108 CLEANING and Inspection AR 108 E AA a Aoa Aa E AE AE A EA A EE A EAEE A S ide OAE E A A SEE AEAEE 108 AA EE A AA AE EEA EL RN 108 Display Filter Cle anin a A E A T E 108 TETONAS CAN ii A T A E A AAA RAS 109 E E NR NN NE 109 SECTION 10 PERFORMANCE VERIFICATION AND ADJUSTMENT cocccconcocononccnncnnnanononcnnncnnnnnnnnncnnncnnnnnnnnncnnnnnnanannanennns 110 Adjustment Calibration iii iaa 110 EQUIPMENEREQUI is in 111 AA O NON ANN 112 Verifying Gali bhatlonezsccss idesevecedeeeselins lt coneed cvossasacs AE ERAS AAA Adi 114 EQUIPMENT RE QUIN diria A E E RS A AAA ds ease 115 Starting Verification mercierna aaae aa dvcvdacdemeshle ada aida aaae aaa a eaa aS 115 DCVoltage Verificar eos IS ees dace dea A A ote iaoa diia 116 DC CurrentScaling MECA A a dada 116 DGC rrent Zero VerificatiON sa sne ee a E chins Ai E A a a a R standin 117 AG Voltage Veritication e a a aa aaa a a aa aa a EE R EEO iE 117 AC C rrent Zero Verificati Nse eiieeii aa aane E E EEEE EL EE E e a ia earet 117 Page 6 of 151 95x Series Operating Manual April 23 2015 Low Ohms Resistance Verification isset neee aaaea Eeee e Eo EA E n rro a ad nens 118 Ground Bond Verification iA de A Ea ESE e AA ESAO 118 Option
8. l The ramp and dwell times are those specified 100us DC BREAKDOWN VOLTAGE DEVICE TESTING BRKDN This tests that a DUT exhibits breakdown when tested with a user set DC current The measured breakdown voltage is checked against an allowable range The BRKDN type is commonly used for testing high voltage protection devices such as spark gap surge arrestors and MOV style voltage limiters ACTIONS WHILE RUNNING VOLTAGE TIME RAMP SEARCH _ DISCHARGE RAMP During this period the test voltage is ramped at the user set maximum ramp rate to an automatically selected voltage level between 50 and 90 of the minimum breakdown voltage limit setting If the user set breakdown current limit occurs during this period then the DUT is failed and the highest voltage and current are recorded and the DISCHARGE period is started i e the SEARCH period is skipped SEARCH During this period the test voltage is ramped at an automatically selected slower rate than during the RAMP period The search ramp rate is selected to give best accuracy within the set breakdown voltage limits If the user set breakdown current limit occurs during this period then the highest voltage is recorded as the DUT breakdown voltage and the DISCHARGE period is started If a voltage significantly higher than the maximum breakdown voltage limit is reached before the load current achieves the user breakdown current limit then the DUT is failed and the final voltage and cur
9. lt 0 1 accuracy Test Waveform Sinewave 1 3 1 5 Crest Factor Compliance 8Vrms 0 015V A max compliance at test frequencies lt 75Hz For line voltages below 115V linearly reduce the maximum compliance by 1 V unless Opt LOLINE is fitted there is no reduction for Opt LOLINE Loading 100hm max impedance any phase within compliance limits 250W maximum load power VOLTAGE MEASUREMENTS The following apply at the SENSE terminals Range OuV to 8 0000Vrms RMS In phase and quadrature Accuracy lt 0 5 30uV 0 5uV A accuracy add 0 005 0 05uV A per Hz above 100Hz lt 0 005 per Hz phase relative to test current Cable Compensation lt 1 of error IMPEDANCE MEASUREMENTS Accuracy Add Test Current and Voltage Accuracies as percentages Examples at 50 or 60Hz 0 lohm at 1A 1 0 53 1 53 0 10hm at 10A 0 55 0 5 1 05 0 10hm at 40A 0 51 0 5 1 01 0 01ohm at 1A 1 0 8 1 8 0 01ohm at 10A 0 55 0 53 1 08 0 01ohm at 40A 0 51 0 51 1 02 Oohm at 1A 30 5uohm Page 86 of 151 95x Series Operating Manual April 23 2015 Oohm at 10A 3 5uohm Oohm at 40A 1 25u0hm _TEST TIMING Ramp 0 00 to 9999sec lt 1 0 1sec 1 cycle accuracy Dwell 0 02 to 9999sec or user terminated lt 0 05 20ms 1 cycle accuracy Fast Discharge lt 20ms 1 cycle GROUND LEAKAGE TESTING DCI AND ACI These types are intended for testing that a product does not exceed ground le
10. or use the START button if FAST RERUN is enabled to start another run of the same test sequence The READY indicator is illuminated when the test sequence is ready to be run again DISPLAYED MEASUREMENT RESULTS While running a test sequence the 95x allows the user to view measurement results Generally several different measurement results are available the user may change between available results by pressing the UNIT key So that the user can distinguish between results the 95x displays each with different units characters following the result as follows Applied test voltage V Applied test frequency Hz DC current A DC resistance Q RMS current Arms RMS Voltage Vrms RMS impedance Orms In Phase current Ainp In Phase Voltage Vinp Page 36 of 151 95x Series Operating Manual April 23 2015 In Phase Resistance Qinp Quadrature current Aqua Quadrature Voltage Vqua Quadrature impedance Qqua Capacitance F Dissipation Factor DF Peak or breakdown current Apk Arc current Aarc e Many results are capable of having a negative polarity a negative result is preceded by the character A positive result has no preceding polarity character e The 95x automatically formats the displayed result to give the best meaningful resolution using a multiplier character as needed e g G M K m u n or p Displayed results may have slightly limited resolution full resolution is available vi
11. sequence using the Lead Compensation feature with a nominal load connected the 95x will then automatically apply this in future runs of the test SPECIFICATIONS Specifications are valid at the 95x terminals for 1 year at ambient temperatures within 5C of calibration temperature add 5 of accuracy specification per C outside of this All specifications are relative to the calibration standards used Add digit to all accuracies for displayed results results available with enhanced resolution from interfaces TEST VOLTAGE AND LOADING CAPABILITY Test Voltage 951 4i standard build 50V to 8000V 951 4i opt AC2 20V to 2750V Output Impedance 951 4i standard build 12Kohm 0 5H nominal output impedance 951 4i opt AC2 1 4Kohm 0 2H nominal output impedance Max Load Current Limited by the lesser of a the test voltage and output impedance b 145mA 288mA for Opt AC 2 MEASURED TEST VOLTAGE ACCURACY Test Voltage Accuracy lt 0 5 5V 0 2V per mA load Page 72 of 151 95x Series Operating Manual April 23 2015 LOAD CURRENT MEASUREMENTS l Measurements are performed in the RETURN terminal of the 95x Breakdown Current 1uA to 280mApk DC 50kHz bandwidth lt 1 1uA accuracy lt 30usec detection time lt 3msec response time typically lt 500usec Arc Current 1to 30mArms 50KHz 5MHz bandwidth lt 10 1mA accuracy at 1MHz 4us 10us 15us 20us 30us or 40us measurement period TEST TIMING
12. steps This allows faster and smoother operation when testing certain types of DUT Test sequences defined at the front panel are automatically stored in internal non volatile memory of the 95x The user does not need to take any action to ensure that a front panel defined test sequence is saved Note that the 95x is limited to having 1000 non volatile test steps stored in total The user can also define a test sequence via an interface see a later chapter for details regarding this The interface defined test sequence differs from a front panel defined standard test sequence as follows e It is volatile i e it exists until cleared another sequence is defined or selected or power is cycled on the 95x e Itisnumbered 100 and displayed as either IN or I e It has no name associated with it e Itcannot be edited or selected from the front panel although it can be started stopped and its results can be reviewed and or printed at the front panel in the normal manner e It can have up to 999 steps If the number of defined steps is within the maximum for a non volatile store 1 for sequence 0 otherwise 254 then interface commands are provided to save it into a non volatile sequence Page 31 of 151 95x Series Operating Manual April 23 2015 TEST SEQUENCE CONFIGURATION There are settings in the 95x which apply to all test steps in all test sequences To view or change these settings perform the following actions Ensur
13. 1 512pF DF 0 0000 0 0005 ARC DETECT 4us 10mA DISCHARGE AS RAMP ON FAIL ABORT SEQ LEVEL Allows the test voltage level and frequency to be programmed Values cannot be set which are beyond the range of possible output voltages and frequencies from the specific 95x or above the maximum voltage limit set by the user in the CNFG TEST USER MAX ACV setting SOURCE Only available if Opt AC 30 is installed Allows the user to select whether to use the standard internal source at the front panel HV terminal INT or the higher voltage source from the external AC 30 EXT This selection is automatically made and is not editable if the programmed level or frequency is beyond the capability of the other source DUT GROUNDED Only available if option HSS is installed and INT is selected in the SOURCE line above if option AC 30 is also installed This selection allows the user to select either o NO This selection indicates that the DUT is isolated from ground the 95x will use the current in the RETURN terminal to measure leakage and detect breakdown This is as if option HSS were not installed o YES This selection indicates that the DUT is grounded and the breakdown and or leakage currents are to be measured to ground The 95x will use the current in the HV terminal to measure leakage and detect breakdown BREAKDOWN Not available for the ACez type Allows breakdown detection to be programmed as a maximum instantaneous peak curre
14. 1 hour is recommended prior to being calibrated Initially there should be no connections to any of the 95x terminals and it is recommended to not have any connections to the interface ports during the procedure In the various steps shown in this procedure if a step is specific to certain models then it is denoted as such In all cases follow the prompts in the display of the 95x for the actual procedure The user can press STOP to abort the procedure The front panel High Voltage warning light is illuminated whenever there are high voltages or currents present on the 95x terminals When illuminated the user should not touch the connections to the 95x Several of the verification steps are performed at very high voltages the user must ensure that the wiring used has sufficient insulation for the voltages Although the sequence is similar between the 95x series products and options there are differences depending on the voltages currents and modes which each model and option is capable of The 95x automatically accounts for the actual model and option content when guiding the user through the sequence Individual steps and or entire groups of steps may not be present in the actual product being verified Any optional customer requested factory voltage and current generation limitations are applied during verification and so will also affect the procedure Since the 95x is internally grounded the measurement equipment current sources and test loa
15. 15 20 30 or 40 lt EMPTY gt Arc detection disabled gt lt NR1 gt Arc detection limit in mA lt EMPTY gt Only valid if arc detection disabled in field 6 ABORT Abort on failure a SIRING CONT Continue on failure Example ADD ACI 5 0 0 0 0 0 50e 6 ABORT Configures the following in order An ACI type test step 5 second test time O second delay time No minimum leakage current 50uA maximum leakage current No arc detection so following field is also lt EMPTY gt Abort test sequence if fails DCI CONFIGURATION FIELDS Field Field Format Value 1 lt STRING gt DCI 5 lt NR3 gt Test time in seconds lt EMPTY gt Step is to be user terminated Page 139 of 151 95x Series Operating Manual April 23 2015 3 lt NR3 gt Delay time in seconds 4 lt NR3 gt Minimum Leakage Current Limit in A 5 lt NR3 gt Maximum Leakage Current Limit in A P lt NR1 gt Time period for arc detection 4 10 15 20 30 or 40 lt EMPTY gt Arc detection disabled J lt NR1 gt Arc detection limit in mA lt EMPTY gt Only valid if arc detection disabled in field 6 ABORT Abort on failure a SIRING CONT Continue on failure Example ADD DCI 5 0 0 0 0 0 50e 6 ABORT Configures the following in order A DCI type test step 5 second test time O second delay time No minimum leakage current 50uA maximum leakage current No arc detection so foll
16. 15 00mA ON FAIL ABORT SEQ An example DCW menu is as follows Seg 1 Step 1 DCW LEVEL 1500 0v BREAKDOWN 30 00mApk RAMP 1 00sec DWELL 30 0sec Delay 0 25sec Lim On 15 00mA ARC DETECT 4us 10mA DISCHARGE AS RAMP ON FAIL ABORT SEQ An example DCIR menu is as follows Seq 1 Step 1 DCIR LEVEL 1500 0v BREAKDOWN 30 00mApk RAMP 1 00sec DWELL 30 0sec Delay 0 25sec End on PASS Lim 100 0K no maxQ ARC DETECT 4us 10mA DISCHARGE AS RAMP ON FAIL ABORT SEQ e LEVEL Allows the test voltage level to be programmed Note that a value cannot be set which is beyond the range of possible output voltages from the specific 95x or above the maximum voltage limit set by the user in the CNFG TEST USER MAX DCV setting e DUT GROUNDED Only available if option HSS is installed This selection allows the user to select either o NO This selection indicates that the DUT is isolated from ground the 95x will use the current in the RETURN terminal to measure leakage and detect breakdown This is as if option HSS were not installed o YES This selection indicates that the DUT is grounded the 95x will use the current in the HV terminal to measure leakage and detect breakdown e BREAKDOWN Not available for the DCez type Allows breakdown detection to be programmed as a maximum instantaneous peak current level Pressing the LIMIT key while this setting is selected causes it to be set to the maximum value See Breakdown Cu
17. 151 95x Series Operating Manual April 23 2015 STARTING WITH THE START SIGNAL The following timing constraints on the DIO signals must be observed when starting a test sequence using the START signal e The TESTING output signal from the 95x must have been inactive for gt 5ms before a sequence may be started e f enabled the ABORT signal must be inactive for gt 5ms before the inactive to active transition of the START signal e The START signal must have been inactive for gt 5ms before attempting to start e The START signal must be active for gt 10ms there is no maximum time e f enabled the SEQUENCE signals must all be stable in the required state for gt 5ms before and after the inactive to active transition of the START signal The test sequence is started within lt 10ms 1ms per test step in the sequence commanded by the SEQUENCE input signals if enabled after recognition of the inactive to active transition of the START signal At that time the PASS FAIL and TESTING output signals are set by the 95x to the following states with lt 100us skew between them e PASS and FAIL both made inactive if the sequence is valid and started correctly otherwise PASS is made inactive and FAIL is made active e TESTING made active if the sequence is valid and started correctly otherwise remains inactive ABORTING WITH THE ABORT OR INTERLOCK SIGNALS If enabled and the ABORT signal is active for gt 5ms then any r
18. 5 minutes The user may press the STOP button at any time during the self test procedure to abort it The HIGH VOLTAGE OR HIGH CURRENT PRESENT warning symbol is illuminated whenever high voltages are present on the 95x terminals during this procedure Perform the following to command an automatic self test procedure e Ensure that the display indicates that the 95x is in the base menu state i e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base menu state e Press the TEST key e The display now shows a series of temporary messages indicating the status of certain portions of the 95x If any of these indicate a failure of the 95x then the self test is halted at the failing test e The display now shows a message indicating that the user should remove all leads to the 95x The user must remove all connections to the terminals of the 95x before continuing with the self test CAUTION high voltages may be present on the HV terminal of the 95x during the remainder of the self test procedure the user should ensure that there are no connections and that the terminals are not touched during the procedure When sure that all connections have been removed the user should press the START button to continue the procedure e The display now shows a series of messages indicating the progress as several active circuitry tests are performed automatically by the 95x If any of these indicat
19. 5V e g 12V then one of the following should be used e A suitable value series resistance should be placed in each input signal line to limit the current in the 5V protection to a maximum of 30mA for 12V logic signals the recommended series resistance is 3900 The maximum series resistance value allowable is nominally 6000 to achieve the guaranteed low voltage level e Adiode should be placed in series with the signal with its anode connected towards the 95x connector This will effectively change the high voltage digital signal to a contact closure type only being able to pull the 95x input to the low state and relying on the 95x internal pull up resistor to select the high state e A suitable logic level translation circuit should be employed between the high voltage logic and the 95x e An isolation circuit must be employed between the high voltage logic signal and the 95x input Each output signal has the following characteristics e Each has an open drain drive with gt 12V withstand and gt 500mA sink capability lt 1 3Q impedance with a pull up resistor of nominally 2 2KQ to an internal 5V level e Each is internally clamped to nominally 16V 14V minimum so may be used to directly drive a relay When using a digital output to drive a 12V relay coil or indicator the user should consider that each output has a nominally 3 2mA current flow into the 95x when the output is in the off state at 12V The user must ensure that
20. CONTRAST The user can adjust the display contrast while the 95x is in the base menu state i e the display shows the model number and the time date An example display when the user can adjust the display contrast is ViTREK 9511 9 Feb 10 9 08 51am Using the Up and Down Arrows keys select the display contrast which best suits the users normal viewing position NOTE it may be possible to adjust the display contrast such that the display is not visible If the display appears to be totally blank then press and hold the Down Arrow key to return it to the visible state if the display appears to have all of its dots black then press and hold the Up Arrow key to return it to the visible state NOTE it may be best to select the contrast which shows the least blurring when the seconds digit in the displayed time changes This has been found to produce the best adjustment for viewing angle as well as contrast LOCKING AND UNLOCKING MENUS Many menus in the 95x can be locked by a user preventing unauthorized changes to test sequences and configuration settings via the front panel of the 95x When initially delivered from the factory this capability is disabled The password is any combination of six O through 9 and A through F characters The password 000000 indicates a cleared password disabling this capability until a non zero password is subsequently set by the user If a menu lock password has been set the 95x alwa
21. Changing Multiple Choice Data After making the multiple choice data the selection point in the menu the user can change the selection by repeatedly pressing the Up Arrow or Down Arrow keys until the desired selection is displayed The ENTER key terminates the multiple choice data entry and also moves the selection point to the right or downwards as applicable The Left Arrow and Right Arrow keys automatically terminate the multiple choice data entry prior to moving the selection point accordingly e Changing Character Data After making the character data the selection point in the menu the user can choose to either edit the existing data or to overwrite it with new data While overwriting or editing the data the selection point becomes a single character position within the character data O Editing Existing Character Data If the user presses the Up Arrow or Down Arrow key while the entire character data is selected then the edit mode of entry is initiated and the leftmost character of the existing data is selected Character data uses a limited character set A through Z a through z 0 through 9 the space character and most punctuation characters The Up Arrow and Down Arrow keys change the selected character to the next or previous available character in the character set The numeric keys and the A through F keys overwrite the selected character The Left Arrow and Right Arrow keys move the selection point withi
22. DCez DCW or DCIR type step By default this limit is set to 200mA following an upgrade from pre v2 02 or when shipped from ViTREK which yields the same actions as in previous versions This setting is located in the CNFG TEST menu Interface commands MAXDISCHARGE and MAXDISCHARGE lt NR3 gt have been added to support this capability should the user wish to change from the standard setting o The user may wish to extend their software if using an interface to use this additional capability No changes are needed if the new capability is not needed e DCW and DCIR type steps now have an additional menu setting for each step which allows the user to configure for minimum load detection during ramp There is also a new setting in the CNFG TEST menu which allows the user to enable or disable this capability in all steps By default the overall setting is set to disable the capability which yields the same actions as in previous versions If this is enabled then all sequences defined when running a version prior to v2 02 will have the minimum ramp load set to OpF which effectively disables it In this manner the addition of this capability is transparent to the user unless the user specifically requires it Interface commands MINLOAD and MINLOAD lt BOOL gt have been added to support the overall enable setting and the individual commands for the DCW and DCIR type steps have an extra field added to support setting a minimum load for each step
23. Id EA SAS 84 SPECIAL A ROS 86 Ground Leakage Testing DCl and ACh o ieir a A EE E a i a E aer in aT 87 Actions While RUNAS india 87 CONEA Er is dada 87 CONNECTING t CHE DUT iii a A suctndteSheselunnuertsdosecesdvenesttes cveuke 88 Lead Comp peN ATI OM cas assesses r Heed A ds 88 Es 89 SoL EEAO St eS caresses cues A A A E E E ARA 90 Switch Unit Contr l SWITCH iia A A ES id NEE 91 ACTIONS WIE RUN E a a a a a a a a NE E 91 CONFI ATAT E EAE oon E A E N E E E EA 91 Examples aa e a A dace a Hes a a aE hes EA E E A a 92 SECC a SAE E EA EEEE E a E A E EA EE A 92 Test Sequence Timing Control PAUSE and HOLD ooooccccoccncconononoconnnonononnncconononcconnnnnononnncnononnncnnnnnnnnnnnnccnnnnnnccnnnnnos 92 Kolah AOT Aa e AEE EE TE A EE ad 92 EXAINPIes ii A A A E A E E a 93 Sp cificati NS a aeai i a a E a r Vee i A dah AA ta ba i eves 93 SECTION 7 CONNECTING AND CONFIGURING INTERFACES 00 ceeeseessececececeeeeaeeeceeecesneaaeaeeeeeceseeaucaeeeeeeessenneaeeeeees 94 LOCAL ANGIREMOTE Operaatio anoe ovules a venecaiceceed caida a Coiensuduuiinr IAEA Ran deceds ensues Ranes een ceci 94 Controlling External Switch Matrix Units cccccccccscssseccceceesesescececececseeseesececeeseseeseseeececseseeaeseesessseseeaeseeseseeeseages 94 CONEA Na iria 94 CONOS A a E A E AS 96 Controlling the 95x by the RS232 Interface occccconocooocnncnononononncnnnnonononononnncnncnnnnonnnnnnnnnnnnnnnnnnnncnnonnnnnnnnnncnnnnnnnnnos 96 AMC ld AAT 96 GO
24. Interface for details regarding connecting and configuring a printer and the display messages while performing a printout CONFIGURING THE TEST RESULTS REPORT Before a test report can be printed its format should be configured by the user This is achieved by using the PRINTOUT sub menu of the CNFG menu as follows Ensure that the display indicates that the 95x is in the base menu state e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base menu state Press the CNFG key The display now shows the main configuration menu an example of which is TEST PRINTOUT SYSTEM INTERFACES DIGITAL I O BUILD SET TO DEFAULTS LOCK PASSWORD 000000 RELOCK Using the Left Arrow or Right Arrow keys as needed change the selection point to the PRINTOUT line Page 39 of 151 95x Series Operating Manual April 23 2015 e Press the ENTER key e The display now shows the test report printout configuration menu An example of the test report printout configuration menu is as follows STATUS ATTACHED HEADING AUTO TEST REPORT NO TEST DETAIL NORMAL SERIAL 4 NO e The user may navigate this sub menu and change the displayed settings as required o STATUS This shows the present status of the printer interface The information shown is not editable and will automatically update should a change occur NOT FITTED Indicates that the U
25. Manual April 23 2015 e Press START to perform the verification e Press STOP to abort the entire sequence During each step the user should note the displayed resistance measurement on the 95x display and record it checking against the 95x specification shown in the table below When the user is satisfied that the step has been completed the user should press START to continue or STOP to abort the sequence Resistance Current 95x Accuracy 6 03 0 06030 10 1A 1 5 0 0150 100m0 1A 1 53 1 53mQ 100m0 10A 1 05 1 05mQ 50m0 25A 1 02 0 51mQ OPTION HSS CURRENT VERIFICATION This series of steps is only included if option HSS is fitted The first step in this series requires no external equipment all 95x terminals should be disconnected For the remaining steps in this series the user should connect the prompted value resistance equipment 8 in the equipment list above between the HV terminal of the 95x and the HI terminal of the milli ammeter The LO terminal of the milli ammeter should be connected to the RETURN terminal of the 95x The milli ammeter is used to determine the actual load current the 95x displays the value which it is measuring The table below shows the listing of the resistances requested for verification the measurement current levels and the 95x specification at each current level When prompted for each step the user should either e Press START to perform the verification e Press STOP t
26. THE MEASURING DEVICE AND WIRING IS CAPABLE OF WITHSTANDING THE VOLTAGE LEVEL PRIOR TO PRESSING THE START SWITCH AT EACH STEP The table below shows the fullest listing of the voltages requested for verification and the 95x specification at each level When prompted for each step the user should either e Press START to perform the verification the output voltage will be present after pressing this switch e Press STOP to abort the entire sequence During each step the user should measure the actual voltage and record it checking against the 95x specification When the user is satisfied that the step has been completed the user should press START to continue or STOP to abort the sequence Voltage Level 95x Models 95x Accuracy 14000V 957i only 0 764 107V Sees 957i 0 77 77V 10000V 953i 954i 955i and 957i only Others 0 255 25 5V 957i 0 783 47V cada PERCE RE Spe Others 0 258 15 5V DC CURRENT SCALING VERIFICATION The user should connect a DC current source equipment 2 in the list above between the SENSE and the GND GUARD terminals of the 95x The table below shows the listing of the currents prompted for verification and the 95x specification at each level When prompted for each step the user should either e Press START to perform the verification the user should ensure that the requested current is present prior to pressing this switch e Press STOP to abort the entire sequence Durin
27. VLIMIT DC Responds with the lt NR3 gt maximum DC Voltage setting VLIMIT AC lt NR3 gt Configures the maximum AC Voltage available during future test sequences VLIMIT AC Responds with the lt NR3 gt maximum AC Voltage setting Identification Commands Responds with a set of fields describing the product see IDN IDN Response Fields Responds with a lt STRING gt indicating the serial number of the product Misc Commands Sets the front panel into the REMOTE LOCK OUT state Resets all interfaces RST Aborts a running test sequence Clears the active test sequence This is always in 24hr format SWITCHES lt STRING gt Page 130 of 151 95x Series Operating Manual April 23 2015 IDN RESPONSE FIELDS ACEZ CONFIGURATION FIELDS Field Field Format Description 1 lt STRING gt Manufacturer e g VITREK 2 lt STRING gt Model e g 951i 3 lt STRING gt Serial number e g 123456 4 lt STRING gt Main firmware version e g v1 45 5 lt STRING gt Front panel firmware version e g v1 21 6 lt STRING gt Measurement DSP firmware version e g v1 21 7 lt STRING gt Drive DSP firmware version e g v1 21 Field Field Format Value 1 lt STRING gt ACEZ 2 lt NR3 gt Test Voltage in Vrms 3 lt NR3 gt Test Frequency in Hz 4 lt NR3 gt Ramp Time in seconds 5 lt NR3 gt Dwell time in seconds lt EMPTY gt Step is
28. a Ed ind 27 Unknown Menu Lock PaSSWord sssceesessseceeccessseeeeceecoaeeeeneecsseseeaeecsaeeesaeessaecsaeecsaeeesaeecsaesesaeessaeseneessaeeeneee es 28 Displaying Build dt ias 28 System Configuration SONS A a tinca 29 Returning All Configuration Settings to Factory DefaultS occccconocooncnncnnconononnnnncononnnnnnnonnnncnnnnnnnnnnncnconnononnnnnnncos 30 SECON S TEST SEQUE N CE S a a a a a a e a a a A E AS a sa 31 Test Seguen ee COA EUT O A ii sas 32 Greating New Test SEQUENCE ii don aAA E AEEA E EEEE AAE EENS 33 SAA A E E O 34 Deleting an Existing Test Teo Ea o EE E E A E A E ST 35 Selecting and Running an Existing Test Sequence cccccccccccceesessesececececsesseaesecececeesesaeseeececeeseaaeseeeesceeseaasaeeeeeseeeea 35 Displayed Measurement Results cccccsessccccecsesessscecececeeseeaesecececeeseeaeseseeeceeseseeseseeecesseseeseseescessesaeaeseeseseseesaeeeeees 36 Reviewing Test Results after Running a Test Sequence ccccocooconcnncnonononnnnnnncnnnonononnnnnonnnnnnnonnnnnnnnnnnnnonnnnnnncannnnnnnnnnnnnos 37 Printing a Test RESUS Rep ii A a a Sa a raeed S 39 Configuring the Test Results Report ccccsescecececeesessscecececeeseeeaeeeescecsesssaeseeeeeceesesseseseeeceeeaasseseesceeseaaseeeeesceeees 39 Manually Commanding a Test Results R POrt cccccccccccsssssssecececeesessssesececesseeeaeseseessseseeaeseeseecseseeaeseeeeseseseeaeas 41 Compensating for External Lead Leakage and IMpedance
29. allow sufficient airflow for cooling purposes At least 2 of well ventilated unrestricted space is recommended around the fan intake and above the vents The cooling fan has variable speed to save energy while the 95x is not in use or is not heavily loaded The user may notice that the fan activates shortly after initial application of line power This is normal the fan should stop or Page 18 of 151 95x Series Operating Manual April 23 2015 slow to low speed within 1 minute of application of power If the fan maintains high speed operation for a long time then the airflow may be overly restricted or the fan filter may be blocked the user should take corrective action The cooling fan has a removable filter This is easily removed for cleaning or replacement without disassembling the 95x see SECTION 9 PERIODIC MAINTENANCE The 95x is fully specified for operation in ambient temperatures between 0 and 50C however best accuracy and full loading capability is obtained if the ambient temperature is maintained below 30C For best results the user may wish to operate the 95x in a conditioned environment MOUNTING POSITION AND ORIENTATION The 95x may be installed as either a bench top instrument or installed into a standard 19 rack The 95x is primarily intended to be used in a horizontal or close to horizontal position oriented with the top cover with the vent holes uppermost There are no known issues with mounting the 95x at
30. and checking for the rare possible 95x malfunctions by means of the post adjustment verification This completely ensures that the outgoing 95x meets its specifications but leaves the possibility of an error made during the adjustment calibration leading to the incorrect indication that the incoming 95x did not meet specifications e Periodic Verification Adjustment Verification This is the most complete strategy but is also the most costly in time The time cost can be reduced by performing the initial verification and then only performing the Adjustment Verification components if the initial verification indicates that it is necessary as an example only perform if beyond some percentage of specification in the initial verification ADJUSTMENT CALIBRATION The 95x employs internal software calibration adjustments there are no physical adjustments required These adjustments are needed to correct for manufacturing tolerances in the components used in the 95x it is important to note that there is no calibration of design defects allowed for giving the end user a high degree of certainty that the 95x maintains its specifications Typically adjustment should be rarely needed however the user may wish to perform it at periodic intervals to ensure optimal performance The adjustment calibration procedure for the 95x is an internally prompted sequence dependent on the actual product model being calibrated Please take note of t
31. another set of commands is decoded containing a query command prior to the 95x fully transmitting a prior response then the new response is not provided and an error is raised The following types of responses are given e lt BOOL gt This is a single character 0 indicating the false condition or 1 indicating the true condition This is always 1 character in length e lt STRING gt This is one or more printable ASCII characters This has a variable number of characters in length and may be of no length e lt NR1 gt This is one or more decimal characters defining a decimal numeric value If the polarity is positive then no polarity character is included otherwise the data starts with the minus character This has a variable number of characters in length e lt NR3 gt This is always 12 characters in length and is of the following format in the order shown o Asingle polarity character either or o Six decimal characters with a decimal point character contained within them i e a total of seven characters indicating the mantissa value The single E always uppercase character A single polarity character either or indicating the polarity of the exponent Two decimal digit characters indicating the value of the exponent For clarity in engineering use the exponent is always divisible by 3 DELAYS AND TIMEOUTS The user does not need to perform any delays between sets of commands or between a set of
32. any angle or orientation as long as it is mounted in a secure and stable fashion taking into consideration its weight and weight distribution INSTALLING IN A 19 RACK ENCLOSURE Often when installing the 95x into a rack enclosure it is desired to remove the feet from the bottom of the 95x This is easily achieved by simply removing the screws mounting the feet to the bottom of the unit The user should place the removed feet and mounting hardware into a bag for safe keeping should they be needed at a later date for bench top usage DO NOT INSERT THE MOUNTING HARDWARE BACK INTO THE BOTTOM OF THE 95x WITHOUT THE FEET INSTALLED THIS MAY DAMAGE THE UNIT Option RM 1 provides the rack mount ears required for mounting in a standard 19 rack enclosure When installing the 95x into a rack enclosure it is recommended that the unit be supported through its depth The use of a tray or angle brackets supporting the bottom edges of the unit is recommended LINE POWER WARNING THE 95x IS INTENDED TO BE POWERED FROM A POWER CORD HAVING A PROTECTIVE GROUND WIRE WHICH MUST BE INSERTED INTO A POWER OUTLET HAVING A PROTECTIVE GROUND TERMINAL IF THE 95x IS NOT POWERED FROM A SUITABLE POWER SOURCE THEN THE CHASSIS GROUND TERMINAL LOCATED NEAR THE POWER ENTRY CONNECTOR ON THE REAR PANEL MUST BE PROTECTIVE GROUNDED The user may connect the 95x to any source of line power within the allowable range of voltages and frequencies see above without requiri
33. by any of the following e Aline feed character shown in this document as lt LF gt e Acarriage return character shown in this document as lt CR gt e A form feed character shown in this document as lt FF gt e GPIB only Any data byte with EOI asserted e GPIB only Reception of the GET bus command GENERAL RESPONSE SYNTAX Multiple query commands may be included in the same set of commands in which case the overall response will include each requested response separated by the comma character in the order defined in the set of commands A response is always terminated with a lt CR gt character followed by a lt LF gt character with EOI asserted for the GPIB interface If the response is over 19999 characters in total length then an error is raised and no response is given For the GPIB interface only a space character is appended to the start of each set of responses including a blank response On the RS232 and Ethernet interfaces any response is transmitted as soon as the set of commands containing one or more query commands is completely decoded Page 122 of 151 95x Series Operating Manual April 23 2015 On the GPIB interface the user must take some action to receive the response from the 95x i e a READ bus operation If a read operation is performed when there is no data to be transmitted then a blank data is transmitted i e a single space character followed by lt CR gt lt LF gt If
34. commands containing query commands and reading the response The 95x automatically handshakes the commands as needed The only exception to this is following application of power to the 95x in which case a minimum delay of 3 seconds is required prior to operation of the interfaces The maximum length of time for which the 95x will hold off a set of commands e g waiting for a previous set of commands to be decoded is 100ms For all interfaces responses to query commands are generally transmitted within a very short period of time however in some circumstances there may be some delay enforced by the 95x The user should use a timeout of no less than 100ms for responses MULTIPLE INTERFACE OPERATION Generally operation of the 95x via multiple interfaces is not recommended but is possible The 95x will decode sets of commands in the order in which they were terminated each interface has separate receive and transmit buffers Any query responses will only be transmitted via the interface from which the query command originated FRONT PANEL OPERATION WHILE USING INTERFACES It is possible to inter mix front panel and interface operation of the 95x however the user should be aware of the following Page 123 of 151 95x Series Operating Manual April 23 2015 e The front panel has three states associated with interface operation o LOCAL The front panel operates normally When any command from an interface is decoded the front pa
35. grounded lt STRING gt GND Load is grounded only valid if option HSS is fitted ISO Load is not grounded Example ADD BRKDN 1000 0 500 0 600 0 ABORT Configures the following in order A BRKDN type test step 1000V sec initial ramp rate 500V minimum breakdown voltage 600V minimum breakdown voltage Abort test sequence if fails Load is not grounded field 7 is missing PAUSE CONFIGURATION FIELDS Field Field Format Value 1 lt STRING gt PAUSE 2 lt NR3 gt Pause time in seconds Example ADD PAUSE 5 0 Configures the following in order A PAUSE type test step 5 second pause time Page 141 of 151 95x Series Operating Manual April 23 2015 HOLD CONFIGURATION FIELDS Field Field Format Value 1 lt STRING gt HOLD 2 lt NR3 gt Timeout in seconds Example ADD HOLD 60 0 Configures the following in order A HOLD type test step 60 second timeout SWITCH 9481 CONFIGURATION CONFIGURATION FIELDS Field Field Format Value 1 lt STRING gt SWITCH 2 lt NR3 gt Pre switch delay in seconds 3 lt NR3 gt Post switch delay in seconds 4 10 lt NR1 gt Switch bank data banks 6 0 resp Example ADD SWITCH 0 0 0 25 0x00 0x00 0x00 0x00 0x00 0x00 0x00 Configures the following in order A SWITCH type test step O second pre switch delay 0 25 second post switch delay Bank 6 set to hexadecimal 00 Bank 5 set
36. in the panel Lim On 1 000mA As required ARC DETECT OFF As required DISCHARGE FAST ON FAIL ABORT SEQ SPECIFICATIONS Specifications are valid at the 95x terminals for 1 year at ambient temperatures within 5C of calibration temperature add 5 of accuracy specification per C outside of this All specifications are relative to the calibration standards used Add digit to all accuracies for displayed results results available with enhanced resolution from interfaces LOADING CAPABILITY l The listings below show the loading capabilities of the 95x at ambient temperatures lt 30C For ambient temperatures above 30C linearly reduce the maximum loading power and current by 1 C Output powers above 200W have a limited test time e g 4 seconds at 250W Capacitive loading is only limited by the maximum ramp time 9999 9sec and the maximum load current typically this is a 1F load 951i 952i and 956i lt 50mA reduce by 0 05mA per V above 6000V 953i 954i and 955i lt 9000V lt 30mA reduce by 0 0067mA per V above 6000V gt 9000V lt 10mA reduce by 0 0025mA per V above 9000V 957i lt 10mA reduce by 0 001mA per V above 10000V SURGE CURRENT LIMITING AND SHUTDOWN l Impedance Limiting 951i 952i and 956i 6 5KQ 953i 954i and 955i 12 5KQ 957i 24 KQ Peak Shutdown Current 951i 952i and 956i 80mA 50mA if DUT GROUNDED set to YES 953i 954i and 955i 40mA 957i 20mA _TEST VOLTAGE l Test Voltage Ra
37. indication that although the DUT passes breakdown detection at this time it may fail in the future The 95x allows the user to select either a To not detect arc current b If arc current is detected the DUT is not failed only the presence of arcing is reported c Ifarc current is detected fail the DUT If enabled the 95x continuously measures the AC RMS current with band pass filtering of SOKHz to 5MHz over consecutive 4us periods and compares each measurement with the user set arc current limit If the limit is exceeded for more than the user set number of consecutive 4us periods arcing is detected If arc detection is required by the user typically a limit setting of 10mA for 4us is used a lower current limit increases the sensitivity increasing the current and or time decreases the sensitivity Although a setting as low as 1mA may be made this setting is particularly sensitive to pickup of RF interface e g local radio stations so is not recommended If arcing occurs and the DUT has significant capacitance the DUT capacitance may provide most of the energy for the arcing and there may be little if any HF current flow from the DUT In these cases it may not be possible to detect arcing by current flow This is generally not the case for DUT capacitances below a few nF and generally is the case above a few 100nF but this is very dependent on the DUT and wiring AC VOLTAGE WITHSTAND AND LEAKAGE TESTING ACEZ ACW AND ACCAP
38. is 10KV some models and options may allow a higher setting than this o HISAFETY This turns on off the ability of the 95x to detect excessive HV terminal current in high voltage test step types see the specific test type sections of this manual for details o MIN LOAD This turns on off the ability to detect that there is a minimum load attached during DCW or DCIR type test steps see the specific test type sections of this manual for details If enabled in this menu then each DCW and DCIR test step may be individually configured for minimum loading detection as needed o MAX DISCHARGE This sets the maximum current which will be used by the 95x when discharging a load at the end of a DCez DCW or DCIR type test step A value between 1 and 200mA may be configured e When finished press the EXIT key to exit this sub menu and then press EXIT again if no additional configuring is to be performed to exit the main configuration menu and save the settings CREATING A NEW TEST SEQUENCE e Ensure that the display indicates that the 95x is in the base menu state i e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base menu state e Press the NEW key e The display now shows the lowest presently empty test sequence number and a blank name field An example is NEW TEST SEQUENCE 2 e Either change the test sequence number using the numeric keys or the Up Arrow and Down Ar
39. it After editing it is automatically made ready to run This optionally requires a password NEW Initiates a menu allowing the user to select a presently undefined test sequence number and name and then to create the sequence of tests to be performed This optionally requires a password While editing or creating a test sequence this key is also used to insert a new test step into the test sequence DEL Initiates a menu allowing the user to select an existing test sequence and delete it from the 95x This optionally requires a password While editing or creating a test sequence this key is also used to delete a test step from the test sequence PRINT If option UL 2 or GUL 3 is fitted and a suitable printer is attached this key causes a printout to be generated This never requires a password The printout generated is dependent on the menu if any which is active when the key is pressed i If pressed while no menu is active or the configuration menu is active a configuration printout is generated ii If pressed while selecting an existing test sequence a test sequence printout is generated iii If pressed while reviewing the results of a completed test sequence a test results report printout is generated The 95x can also be configured to automatically produce this printout if desired VIEW Initiates a menu allowing the user to either Page 22 of 151 95x Series Operating Manual April 23 2015 i If no test se
40. limits then the test is failed with a WIRING FAULT condition e On any failure the step is immediately aborted and optionally the entire test sequence may be aborted e For the GBez type the ramp and discharge periods are of zero length e For the GB type the discharge period can optionally be skipped if the next step is also a GB type CONFIGURING An example GBez type menu is as follows Seq 1 Step 1 GBez LEVEL 25 000A 60 0Hz DWELL 30 0sec Lim 0 0u 100 0mO ON FAIL ABORT SEQ An example GB type menu is as follows Seq 1 Step 1 GB LEVEL 25 000A 60 0Hz V CLAMP 8 0v RAMP 1 00sec DWELL 30 0sec Test RMS Lim 0 0u 100 0m0 DISCHARGE FAST ON FAIL ABORT SEQ e LEVEL Allows the test current level and frequency to be programmed e V CLAMP Only available for the GB type Allows the open circuit voltage limit to be programmed as a maximum RMS voltage level o The open circuit voltage limit is automatically set to 8Vrms for the GBez type Page 81 of 151 95x Series Operating Manual April 23 2015 e RAMP Only available for the GB type Allows the ramp time period to be programmed either as a time or rate The UNIT key toggles the selection between these two methods In the majority of cases a zero setting should be used e DWELL Allows the dwell time period to be programmed or set to be user terminated with the START button by pressing the LIMIT key while this setting is selected e Test Only available for
41. load current are available for review SPECIFICATIONS Specifications are as for the DC Voltage Withstand Test types except as shown below The BRKDN type must not be used with loads having gt 0 05uF capacitance Page 75 of 151 95x Series Operating Manual April 23 2015 VOLTAGE AND CURRENT ACCURACY Breakdown Voltage Accuracy lt 0 5 1 5V lt 30usec detection time lt 10msec response time Breakdown Current Accuracy lt 1 5 3uA lt 30usec detection time lt 10msec response time TEST TIMING l Ramp and Search lt 50kV sec 15 10ms accuracy CHOOSING WITHIN THE RESISTANCE TESTING GROUP The user may choose for the 95x to test the resistance of a DUT using one of three activities e Ifthe resistance to be tested is more than 100KQ use the DC Voltage Withstand capability of the 95x to measure the resistance of the DUT This can accommodate resistances of below 10KQ to over 1TQ using a fixed DC Voltage across the DUT Typical applications for this include insulation resistance and higher value resistor component testing See DC Voltage Withstand and Leakage Testing DCez DCW and DCIR e If the resistance is between 1mQ and 100KQ and it is allowable to measure using DC at a current of up to 50mA and voltages up to 5V use the DC Low Resistance capability of the 95x Typical applications for this include component testing cable resistance testing and if allowed by the safety standard chassis ground
42. maximum limit which caused the step to fail 01 01d 1500v 60 0Hz 1 55 lt MIN 12 3uArms The measurement being reviewed was below the minimum limit which caused the step to fail 01 01d 1500v 1 5s UNST 12 3uA The measurement being reviewed was within limits but was unsteady with increasing leakage current decreasing resistance which caused the step to fail 01 01d 1500v 60 0Hz HV TRIP EXCEEDED The HV Trip safety feature was tripped which caused the step to fail This is typically caused by a DUT or cable breakdown to ground Page 37 of 151 95x Series Operating Manual April 23 2015 01 01d 1500v 60 0Hz 1 5s BRKDN gt 50mApk The peak voltage source current limit was exceeded which caused the step to fail This is typically caused by a fast and severe DUT breakdown e g a flashover 01 01d 1500v 60 0Hz 1 5s BRKDN 11 3mApk The user set breakdown current limit was exceeded which caused the step to fail 01 01d 1500v 60 0Hz 1 55 OVER 11 3mA The DUT current exceeded the 95x maximum ability for gt 10ms this is typically a DUT breakdown whose peak was limited to below the configured breakdown limit but may also indicate that the configured ramp rate for a DC type step was too fast for the load capacitance so the charging current was beyond the units ability 01 01d 0 000A 60Hz WIRING FAULT A wiring fault was detected during a GB GBez or LowQ type step which caused the ste
43. measurement o QUAD Selects that the leakage check is performed on the quadrature i e reactive loading current measurement e Lim Not available for the ACCAP type it has limits set in different units to ACez and ACW Allows the user to define ranges within which each selected current measurement is considered a PASS during the dwell period The range can be entered in units of current or impedance the UNIT key toggles the selection For the impedance selection the user may optionally disable the upper limit by pressing the LIMIT key while the upper limit is selected For the current selection the user may optionally disable the lower limit by entering a zero value for it o Setting a 0 minimum current limit disables the minimum limit and only applies the maximum limit o The maximum current limit or the minimum impedance limit is the maximum loading current which the specific 95x model and option content can continuously supply at the configured test voltage and frequency see Loading Capability o For the ACez type the breakdown detection limit is automatically set to 1 414 times the maximum RMS leakage current limit with a minimum of 1uApk e C Only available for the ACCAP type Allows the user to define the range within which the capacitance measurement is considered a PASS during the dwell period o The highest maximum limit which can be entered is determined by the maximum loading current which the specific 95x model and opti
44. of 5 seconds have been chosen The DCIR test is performed first since if the DCIR were performed after the breakdown test then there would be much longer settling time required because the panel is settling from 2500V to 500V e a 2000V change rather than a 500V change prior to the very sensitive DCIR measurement This is accomplished in two steps as follows Seq 1 Step 1 DCIR This could also be a DCW test with the same results LEVEL 500 0v As required BREAKDOWN 5 000mApk Must be greater than the charging current RAMP 1 00sec As required DWELL 5 00sec As required Page 64 of 151 95x Series Operating Manual April 23 2015 Delay 2 00sec Allow for dielectric storage in the panel End On FAIL As required Lim 100 0M no maxQ As required ARC DETECT OFF As required DISCHARGE NONE No need to discharge before the next step reduces test time ON FAIL ABORT SEQ Optional could continue testing if fails Seq 1 Step 2 DCW Different breakdown and leakage limits so use DCW LEVEL 2500 0v As required BREAKDOWN 20 00mApk Must be greater than the charging current RAMP 1 00sec As required DWELL 5 00sec As required Delay 1 00sec Allow for dielectric storage in the panel Lim On 1 000mA As required ARC DETECT OFF As required DISCHARGE FAST ON FAIL ABORT SEQ Example 4 In example 3 above it is required to ensure that the panel is connected to the 95x during the tests Since the panel has very little DC leakage but has si
45. of commands is denoted by the inclusion of a command terminator Sets of commands are always actioned in the same order as they are received Received characters on each interface are buffered from the actual communications stream the contents of the buffer being decoded and actioned when a command terminator is found in the stream The maximum length of a set of commands is 1023 characters Page 120 of 151 95x Series Operating Manual April 23 2015 The 95x does not raise an error if an empty set of commands is received i e if there are two or more consecutive command terminators This is effectively a do nothing set of commands The 95x does not raise an error if an empty command is received in a set of commands i e there are two or more consecutive command separators or a command separator is immediately followed by a command terminator This is effectively a do nothing command If an error is found in a set of commands then processing of the set of commands is terminated and the remainder of the set of commands is not decoded or actioned There is never any response from a set of commands which contains an error even if the erroneous command was after a query command in the set FIELD SYNTAX Except for the lt STRING gt format data field see below any field may optionally start and or end with one or more whitespace characters Fields within a command are position dependent i e the exact order is defined for
46. of commands was too long over 1023 characters Page 126 of 151 95x Series Operating Manual April 23 2015 COMMANDS Command Description Register Commands Resets the front panel to the LOCAL state ERR register register OPC register SRE lt NR1 gt Sets the SRE register Responds with a lt NR1 gt field value of the SRE register STB Responds with a lt NR1 gt field value of the STB register then certain bits of i the STB register are cleared Commands to create edit recall or save the Active Test Sequence Cannot be used while a test sequence is running Add a test step to the end of the active sequence See ACez Configuration Fields ACW Configuration Fields DCez Configuration Fields DCW Configuration Fields DCIR Configuration Fields GBez Configuration Fields GB Configuration Fields LowQ Configuration Fields ACCAP Configuration Fields ACI Configuration Fields DCI Configuration Fields PULSE Configuration Fields BRKDN Configuration Fields HOLD Configuration Fields SWITCH 948i configuration Configuration Fields SWITCH 964i configuration Configuration Fields CLRLEADS Clears the lead compensation data from the active test sequence NAME lt STRING gt Names the active test sequence NOSEQ Clears the active test sequence Recalls a t nce from the r re and makes it th RCL lt NR1 gt eca s a test sequence from the requested store and makes it the active test sequence SAVE lt NR1 gt Saves the active test
47. resolution from interfaces HV VOLTAGE MEASUREMENTS l DC Voltage Range 951i 952i 956i 0 0 to 8000V 953 954 9551 0 0 to 11000V Option HSS 0 0 to 5000V 951 4i 956i 0 0 to 6000Vrms 955i 0 0 to 10000Vrms Option HSS 0 0 to 4000Vrms AC Voltage Range DC Accuracy lt 0 25 0 5V AC Accuracy lt 0 5 0 5V 0 01 per Hz above 100Hz Input Impedance Nominally 100MO RETURN CURRENT MEASUREMENTS Current Range DC Current Accuracy AC Current Accuracy Input Impedance Arc Current Cable Compensation 0 0nA to 200mA DC or ACrms lt 0 25 0 5nA lt 0 5 20nA 0 005 per Hz above 100Hz lt 150uA Nominally 5KQ gt 150uA Nominally 370 1to 30mArms 50KHz 5MHz bandwidth lt 10 1mA accuracy at 1MHz 4us 10us 15us 20us 30us or 40us measurement period lt 1 of error Page 90 of 151 95x Series Operating Manual April 23 2015 TEST TIMING l Test 0 02 to 9999sec or user terminated lt 0 05 100ms accuracy Delay 0 00 to 9999sec lt 0 05 100ms accuracy SWITCH UNIT CONTROL SWITCH This type is used to control one or more external Switch Matrix Units either VITREK 948 or 964 units NOTE to be able to define or edit a SWITCH test step the 95x must already be configured to control one or more switch matrix units see Controlling External Switch Matrix Units ACTIONS WHILE RUNNING The external switch matrix units are controlled by th
48. sequence into the requested store SET lt NR1 gt Overwrite a step in the active sequence see also ADD Commands to Run the Active Test Sequence Can only be used while a test sequence is not running READY Makes the active test sequence ready to be run by the START button RUN Runs the active test sequence RUN LEADS Runs the active test sequence in Lead Compensation mode Running Test Sequence Control Commands Can only be used while a test sequence is running ABORT Aborts a running test sequence CONT Continues a running test sequence Page 127 of 151 95x Series Operating Manual April 23 2015 Command Description Commands changing the test level or frequency while running a MANUAL sequence AMPS lt NR3 gt Sets the current test level of a running MANUAL test sequence FREQ lt NR3 gt Sets the test frequency of a running MANUAL test sequence VOLTS lt NR3 gt Sets the voltage test level of a running MANUAL test sequence Active Test Sequence Information Query Commands Can only be used while not running a test sequence LEADS Responds with a lt BOOL gt indicating if the active test sequence contains lead compensation data NAME Responds with a lt STRING gt which is the name of the active test sequence Active Test Sequence Status Query Commands run 1 or not 0 i 100 if defined by an interface otherwise O through 99 a running test sequence 0 if none otherwise 1 through 999 Test Result Query Com
49. should not be connected CAUTION High voltages will be present on the wiring while running in lead compensation mode Ensure that the wiring and the unused DUT connections are safely positioned When performing a lead compensation the leakage limits are not enforced otherwise the test step is executed normally EXAMPLES Example 1 A DUT is to have its Line Neutral power connections tested to its chassis for no breakdown at 2000Vrms 60Hz using a 1 second ramp and a 30 second dwell It is known that the DUT leakage is less than 5mArms at this voltage level and frequency if this is not known then start by using 5mArms as the limit and adjust it as needed This is accomplished in a single step as follows Seq 1 Step 1 ACez Only breakdown detection is needed so use the ACez type LEVEL 2000 0v 60 0Hz As required RAMP 1 00sec As required DWELL 30 0sec As required Lim On 5 000mA As required ON FAIL ABORT SEQ Example 2 It is required to test a 2 conductor cable which has a specification of gt 100Mohm resistive leakage and lt 100pF capacitance at 500Vrms and a minimum breakdown voltage of 2000Vrms A decision is made to test for breakdown using a 1 second ramp and a 1 second dwell time since the requirement does not specify it Optionally the Lead Compensation feature could be used to adjust for the DUT wiring capacitance allowing accurate measurement of the 100pF limit Otherwise the measurement will include th
50. step as follows seg 1 Step 1 ACI AC RMS leakage required so use ACI TIME 0 10sec No timing requirement so perform quickly Delay 0 00sec Already connected so no delay needed Lim On 5 000mA Per the requirement ARC DETECT OFF Not required so disabled ON FAIL ABORT SEQ Example 2 The same requirement as in example 1 but both AC and DC leakage currents are to be tested This is accomplished in two steps as follows Seq 1 Step 1 ACI AC RMS leakage required so use ACI TIME 0 10sec No timing requirement so perform quickly Delay 0 00sec Already connected so no delay needed Lim On 5 000mA Per the requirement ARC DETECT OFF Not required so disabled ON FAIL ABORT SEQ Seq 1 Step 2 DCI DC leakage required so use DCI TIME 0 10sec No timing requirement so perform quickly Delay 0 00sec Already connected so no delay needed Lim On 5 000mA Per the requirement ARC DETECT OFF Not required so disabled ON FAIL ABORT SEQ Example 3 It is required to test that a medical device patient connection has less than 50uArms ground leakage The test is to be performed over a 10 second period to ensure that any periodic current is detected This is accomplished in a single step as follows Seq 1 Step 1 ACI AC RMS leakage required so use ACI TIME 10 0sec Per the timing requirement Delay 0 00sec Already connected so no delay needed Lim On 50 00uA Per the requirement ARC DETECT OFF Not required so disabled ON FAIL ABO
51. synchronous coding i e send the query command s wait for the response s wait for a delay repeat e Once the test sequence has completed e g the response to the STEP command is 0 the user should request for the test results There are various methods of achieving this which the user chooses is dependent on the level of detail which is needed The following query commands are recommended o RSLT responds with the overall test status giving overall pass fail information Page 147 of 151 95x Series Operating Manual April 23 2015 o STEPRSLT for each defined step giving very detailed information regarding each step e Ifthe user requires to run the sequence again usually with a different DUT then simply repeat the process starting with the RUN command there is no need to reprogram the sequence itself unless changes are needed If the user needs to synchronize the execution of the sequence to external events the HOLD type step can be used to cause the 95x to suspend execution of the sequence until the CONT command is received from the computer As an example if the computer is controlling switching which needs to be altered during execution the user would program the following during execution e Detect that the HOLD step is being performed by the response to the polled STEP command e Ifthe HOLD step is being performed then program the required change s to switches and send the command CONT
52. the condition of the load check each other nominally every 5ms if any mis operation is detected which lasts more than 10ms then the test sequence is immediately aborted and any high voltage removed preventing a potentially unsafe condition This requires no specific configuration by the user e All processors in the 95x have an associated hardware watchdog which recovers a mis operating processor within typically 100msec If this occurs during a test then the test sequence is immediately aborted and any high voltage removed preventing a potentially unsafe condition This requires no specific configuration by the user Page 17 of 151 95x Series Operating Manual April 23 2015 SECTION 3 INSTALLATION GENERAL SPECIFICATIONS Nominal Dimensions 89mmH x 432mmW x 457mmD 3 5 x 17 x 18 Nominal Weight 951i 953i 957i 959i 9kg 18lb net 12kg 25lb shipping 956i 5kg 11Ib net 8kg 18lb shipping 951i 953i Opt SOOVA 13kg 27lb net 16kg 35lb shipping 952i 954i 955i 13kg 27lb net 16kg 35Ib shipping 957i Opt AC10 or GB40 13kg 271b net 16kg 35Ib shipping Opt AC 30 additional 17kg 36lb net 21kg 46lb shipping Storage Environment 20 to 75C non condensing Operating Environment 0 to 50C lt 85 RH non condensing Pollution Degree 2 Operating Altitude O to 7000ft ASL 10000ft with reduced output drive capability Line Power Installation Category II Standard 105 265Vrms 45 to 450Hz or 160
53. the discharge period can be programmed to be skipped and the next step started at this steps dwell voltage level if the next step is of the DCez DCW or DCIR type During the discharge period the voltage is reduced to zero in the programmed time or at the programmed rate If the actual voltage significantly lags the expected voltage during the discharge then discharge circuitry is automatically engaged to speed up the discharge The test step will not fully complete until the actual voltage is reduced to a safe level The discharge circuitry is a combination of fixed and controlled loading Refer to Discharge in the Specifications section for details The controlled loading has energy limitations which may prevent it engaging until the voltage has been reduced by the fixed loading and the user may restrict this further by setting a lower maximum discharge current setting in the CNFG TEST menu The HIGH VOLTAGE OR HIGH CURRENT PRESENT warning symbol on the front panel of the 95x is illuminated whenever an unsafe voltage is present on the HV terminal If this is the last step in a sequence then the discharge circuitry remains engaged after the test step has fully terminated It is not disengaged until the user finishes reviewing the results of this sequence Page 57 of 151 95x Series Operating Manual April 23 2015 CONFIGURING An example DCez menu is as follows Seq 1 Step 1 DCez LEVEL 1500 0v RAMP 1 00sec DWELL 30 0sec Lim On
54. this current is insufficient to operate the relay or indicator If this current is not acceptable then the signal must be buffered by a suitable driver e g a NPN transistor N channel MOSFET buffer IC or an isolation device SIGNAL ISOLATION When operating the 95x in adverse environments having a large amount of ground noise or when the 95x is being at very high test voltage levels it is recommended to provide isolation between the 95x DIO signals and the remote device if that is also grounded or has significant capacitance to ground This avoids transient ground voltages during DUT breakdown from causing improper operation of the interface The user should consider using relays mechanical or solid state or logic type optical couplers to provide the isolation In extreme conditions the user may need to take steps to ensure that there is minimum capacitance across the isolation barrier formed by these components and also that they are specified for the high voltage transients which could occur it is recommended that isolation devices with a capacitance of lt 20pF and a voltage withstand capability of gt 2 5KVpk be used SIGNAL TIMING In this section there are several references to signals needing to be active or inactive for minimum periods of time The time shown is the minimum guaranteed time for the action described to occur times less than shown may also function correctly but they are not guaranteed to be reliable Page 105 of
55. to be user terminated 6 lt NR3 gt Minimum Leakage Limit in Arms 7 lt NR3 gt Maximum Leakage Limit in Arms ABORT Abort on failure STRING gt CONT Continue on failure Swe Option AC 30 is not used may only be lt MISSING gt if field 10 is also lt MISSING gt 9 lt MISSING gt lt STRING gt INT Option AC 30 is not used o l o EXT Option AC 30 is to be used valid if option AC 30 is fitted SEMEN Load is not grounded 10 lt MISSING gt GND Load is grounded valid if option HSS is fitted lt STRING gt ISO Load is not grounded Example ADD ACEZ 1000 0 60 0 1 5 60 0 0 0 0 005 ABORT Configures the following in order An ACez type test step 1000V test voltage 60Hz test frequency 1 5 second ramp time 60 second dwell time No minimum leakage current limit 5mArms maximum leakage current limit i e 7 07 mApk breakdown limit Abort test sequence if fails HV Terminal used AC 30 not used or not installed since both fields 9 and 10 are missing DUT is isolated since both fields 9 and 10 are missing Page 131 of 151 95x Series Operating Manual April 23 2015 ACW CONFIGURATION FIELDS Field Field Format Value 1 lt STRING gt ACW 2 lt NR3 gt Test Voltage in Vrms 3 lt NR3 gt Test Frequency in Hz 4 lt NR3 gt Breakdown Limit in Apk 5 lt NR3 gt Ramp Time in seconds P lt NR3 gt Dwell time in seconds lt EMPTY gt Step is to be user terminated NONE
56. to the 95x to command it on to the next step in the sequence The user may need to perform a slight delay after sending the CONT command as it will take the 95x about 1ms to actually continue on to the next step if another STEP command is received during that time then it will still report that the HOLD step is being executed Page 148 of 151 95x Series Operating Manual April 23 2015 MIGRATING FROM EARLIER FIRMWARE VERSIONS NOTE if the user upgrades their 95x from an earlier version to v2 02 then a self test MUST be run after the upgrade and before attempting to operate the 95x see Self Test NOTE users of QuickTest Pro need not make any changes to either the 95x QuickTest Pro or their test sequences because of these changes An updated version of QuickTest Pro using some of the new features may be available contact ViTREK for details If the user has been using an earlier version of firmware in a 95x and is now using v2 02 then there are some differences which the user should be aware of e Added additional bit values to the Test Status Flags data which may be read via an interface during or after a sequence has been run see Test Step Status Flags for details o This causes no change to front panel use of the 95x o The user may wish to extend their software to utilize these newly added bits e This version has added the ability to limit the maximum load current which will flow during discharge when executing a
57. user interaction e Bit3 decimal value 8 binary value 00001000 set when a test sequence is completed cleared when read when a test sequence is started when a different test sequence is selected or when reset e Bit4 decimal value 16 binary value 00010000 set when a test failure has been detected cleared when read when a test sequence is started when a different test sequence is selected or when reset e Bit5 decimal value 32 binary value 00100000 set when an ARC current over limit has been detected cleared when read when a test sequence is started when a different test sequence is selected or when reset e Bit6 decimal value 64 binary value 01000000 as defined by IEEE488 1 set if the 95x is asserting the SRQ line otherwise it is cleared Always zero for the SRE register e Bit7 decimal value 128 binary value 10000000 not used always O OPC REGISTER This is separate within each interface This is an 8 bit register i e has values from O to 255 All of the bits in this register are cleared when read by the user Each bit is defined as follows e BitO decimal value 1 binary value 00000001 set when a command set is decoded without error e Bit 1 decimal value 2 binary value 00000010 set when a command is decoded with a field count error e Bit2 decimal value 4 binary value 00000100 set when a command is decoded with an internal memory error e Bit3 decimal value 8 binary va
58. user may supply their own cable in which case it should be a 9 wire female female null modem cable capable of full handshake 115200baud operation l Using a VICL cable supplied by ViTREK connect the VICL OUT port on the 95x to a ViTREK 964i VICL IN port If using more than one 964i then connect each additional ViTREK 964i VICL IN port to the preceding 964i s VICL OUT port The 964i s do not need to be wired together in any specific order when using the VICL interface CONTROLLING THE 95X BY THE RS232 INTERFACE NOTE the RS232 interface can only be used for a single purpose it cannot be used for both controlling an external Switch Matrix unit and controlling the 95x SPECIFICATIONS Baud Rate 9600 19200 57600 or 115200 Handshake Bi directional hardware RTS CTS Data Bits 8 Parity None Start Stop Bits 1 Connector 9 pin Male Dsub Interface Pinout Type DTE same as PC computer Cable required 9 wire female female null modem cable fully wired Cable Length lt 50ft per standard CONFIGURATION e Ensure that the display indicates that the 95x is in the base menu state i e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base menu state e Press the CNFG key e The display now shows the main configuration menu an example of which is TEST PRINTOUT SYSTEM INTERFACES DIGITAL I O BUILD SET TO DEFAULTS LOCK PASSWORD 00
59. value 16 binary value 00010000 set when an internal fault is detected Bit 5 decimal value 32 binary value 00100000 set when an ARC current over limit has been detected Bit 6 decimal value 64 binary value 01000000 not used always O Bit 7 decimal value 128 binary value 10000000 not used always O ERR REGISTER This is separate within each interface This is a numeric value register The value is cleared to zero when read by the user The value is set according to the success or failure of the last decoded command on this interface The possible values of this register are defined as follows 0 Co SN Se eS we NM Ue The command was decoded without error The command could not be decoded at this time The command attempted to create an invalid test step number The command attempted to create or access an invalid test sequence number The command created a test step which is not compatible with this specific instruments capability The command contained a numeric value field which was outside of the allowable range The command contained a field which did not have the correct syntax The command did not contain an expected field The command contained additional fields than expected The command keyword was not recognized 10 The 95x had an internal memory error while executing the command 11 The previous response had not yet been transmitted when this query command was executed 12 The set
60. vs the applied voltage i e doubling the voltage produces nominally twice the leakage current but not necessarily so For DC there is only a single component of leakage current the DC leakage current whereas for AC there are two components e in phase leakage is the component of the leakage current which is in phase with the applied voltage and is caused by the resistance of the DUT e Quadrature leakage is the component of the leakage current which is at 90 to the applied voltage and is caused by the reactance of the DUT typically capacitance The total RMS AC current is the scalar formed by combining the in phase and quadrature vector currents In phase and quadrature currents can be of either polarity which is ignored when comparing against the user set limits The 95x measures the RMS AC current in phase quadrature and total RMS values for every cycle of the applied voltage or the mean DC current for every nominally 7 25ms 100ms for dwell times greater than 2 seconds These values are compared against the user set maximum and minimum limits for leakage current If enabled and the leakage current is outside the limits during the dwell period of the test then the DUT is failed The 95x also offers a special variation of AC Voltage Withstand testing for testing the capacitance and optionally Dissipation Factor of a DUT this uses the in phase and quadrature measurements to internally compute the more advanced capacitance an
61. which is TEST PRINTOUT SYSTEM INTERFACES DIGITAL I O BUILD SET TO DEFAULTS LOCK PASSWORD 000000 RELOCK e Using the Left Arrow or Right Arrow keys as needed change the selection point to the PRINTOUT line e Press the ENTER key Page 100 of 151 95x Series Operating Manual April 23 2015 The display now shows the test report printout configuration menu An example of the test report printout configuration menu is as follows STATUS ATTACHED HEADING AUTO TEST REPORT NO TEST DETAIL NORMAL SERIAL NO The STATUS line shows the status of the present connection to the printer See later in this document regarding the remainder of this menu When finished press the EXIT key to exit this sub menu and then press EXIT again if no additional configuring is to be performed to exit the main configuration menu and save the settings PRINTING While printing the display of the 95x shows the progress and any errors which occur PRINTING This is displayed while the printout is being performed The user may press the STOP button on the 95x front panel to abort a printout PRINTER DISCONNECTED Indicates that the USB cable became disconnected PRINTER USB BUS ERROR Indicates that an unrecoverable USB bus error occurred The 95x automatically reinitializes the USB bus after this but the printout is aborted This is typically caused by severe interference on the USB cable PRINTER TIME
62. while performing a menu or makes no test sequence selected otherwise 4 The menu selection keys During all menus the selected element of the menu is highlighted by flashing between the data and blocks These keys allow the user to move the selection point within a menu a The Left and Right Arrow keys are used to move the selection point within a menu b The ENTER key is used to finish entry of a menu data and automatically move to the next menu item c The EXIT key labeled EXIT SAVE on later units is used to save all changes made within a menu and return to the previous menu if any or to the inactive display 5 The edit keys These allow the user to decrement or increment a selected menu items value During numeric entry these initiate edit mode of data entry rather than direct mode of data entry i e allow the user to adjust the existing entry using the Up Down Arrow keys rather than overwriting the existing value with a new value using the numeric keys For convenience these keys auto repeat if the user maintains pressure on them 6 The indicators a HIGH VOLTAGE OR HIGH CURRENT PRESENT This is illuminated whenever the 95x has a high voltage gt 30V or a high current gt 5A present on its terminals Page 21 of 151 95x Series Operating Manual April 23 2015 PASS This is illuminated whenever a test sequence is passing while running a test sequence or it has passed all test steps follow
63. 0 54 1 29 1nF 377uA 0 65 0 1 0 5 1 25 10nF 3 77mA 0 65 0 1 0 5 1 25 100nF 37 7mA 0 65 0 1 0 5 1 25 Dissipation Factor For test voltages gt 100V at 60Hz and capacitive load currents gt 200uA the DF accuracy is 0 005 For accuracy under other circumstances please contact ViTREK _TEST TIMING l Ramp 0 00 to 9999sec lt 1 0 1sec 1 cycle accuracy Dwell 0 02 to 9999sec or user terminated lt 0 05 20ms 1 cycle accuracy Fast Discharge lt 20ms 1 cycle DC VOLTAGE WITHSTAND AND LEAKAGE TESTING DCEZ DCW AND DCIR These are used to test that a DUT does not exhibit breakdown or optionally arcing in the presence of an applied DC voltage and optionally to test that the DUT leakage current or impedance is within user set limits All of these are performed in the same manner the difference between them is in the amount of configuration available The DCez type is intended for basic breakdown detection the DCW and DCIR types for comprehensive breakdown arcing and leakage testing DCez DCW DCIR Use with High Capacitance Loads Yes Yes Yes Separate Breakdown and Leakage Limits No Yes Yes Detect Minimum Loading during ramp No Optional Optional Immediate FAIL on Breakdown detection throughout step Yes Yes Yes Delay after charging prior to applying leakage limits No Optional Optional Immediate FAIL on Leakage Failure Yes Yes
64. 0000 RELOCK e Using the Left Arrow or Right Arrow keys as needed change the selection point to the INTERFACES line Page 96 of 151 95x Series Operating Manual April 23 2015 Press the ENTER key The 95x now displays the base interfaces configuration settings menu an example of which is RS232 BAUD 115200 SWITCH NONE DISABLE USB NO DISABLE GPIB NO DISABLE ENET NO ETHERNET GPIB ADDR 2 The user may navigate this sub menu and change the displayed settings as required The settings affecting using the RS232 to control the 95x are o RS232 BAUD This setting must match the baud rate setting of the attached computer When finished press the EXIT key to exit this sub menu and then press EXIT again if no additional configuring is to be performed to exit the main configuration menu and save the settings NOTE the settings are not active until all menus have been exited CONNECTIONS Using a RS232 cable supplied by ViTREK connect the RS232 port on the 95x rear panel to the RS232 Serial port of a computer The user may supply their own cable in which case it should be a 9 wire female female null modem cable capable of full handshake 115200baud operation CONTROLLING THE 95X BY THE GPIB INTERFACE CONFIGURATION Ensure that the display indicates that the 95x is in the base menu state i e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base men
65. 0V test voltage 15mA breakdown limit 1 5 second ramp time 60 second dwell time O second delay Page 135 of 151 95x Series Operating Manual April 23 2015 Test is terminated as soon as a failure is detected Define leakage limits in Amps No minimum leakage current limit 25uA maximum leakage current limit 4us arc detection time 10mA arc detection limit Fast discharge Abort test sequence if fails Minimum load during ramp is set to O since both fields 15 and 16 are missing DUT is isolated since both fields 15 and 16 are missing GBEZ CONFIGURATION FIELDS Field Field Format Value 1 lt STRING gt GBEZ 2 lt NR3 gt Test Current in Arms 3 lt NR3 gt Test Frequency in Hz 3 lt NR3 gt Dwell time in seconds lt EMPTY gt Step is to be user terminated 5 lt NR3 gt Minimum Voltage Drop Limit in Vrms 6 lt NR3 gt Maximum Voltage Drop Limit in Vrms ABORT Abort on failure AGR CONT Continue on failure Example ADD GBEZ 25 0 60 0 60 0 0 0 0 1 ABORT Configures the following in order A GBez type test step 25A test current 60Hz test frequency 60 second dwell time No minimum voltage drop 0 1V maximum voltage drop Abort test sequence if fails GB CONFIGURATION FIELDS Field Field Format Value 1 lt STRING gt GB 2 lt NR3 gt Test Current in Arms 3 lt NR3 gt Test Frequency in Hz 4 lt NR3 gt Maximum open circuit
66. 1 5V compliance with an accuracy of better than 0 0625 for a 4 1 accuracy ratio the 95x specification is 0 25 All models A 10KQ resistance with an accuracy of better than 0 2 at a nominal 0 5mAdc current the 95x specification is 0 8 Preferably this resistor should be a 4 terminal device 959i only A 100 resistance with an accuracy of better than 0 2 at a nominal 30mAdc current the 95x specification is 0 8 This resistor should be a 4 terminal device 952i 4i 9i only A nominally 10 4 wire impedance with an accuracy of better than 10 375 at 1Arms 60Hz current for a 4 1 accuracy ratio the 952i 4i 9i specification is 1 5 The actual value must be known to within the accuracy limits and must be in the range 0 9 to 1 10 Option HSS only A nominal 1MQ 20 resistor capable of withstanding 1000V and a milli ammeter with an accuracy of better than 0 25 at 1mAdc for a 4 1 accuracy ratio the 95x specification is 1 Equipments 3 through 7 are generally available in the same multi function calibrator and can be cabled using standard wire of heavy enough gauge for the current and with sufficient insulation for the voltage For equipment 2 the user may construct their own 4 wire zero resistance standard and use short lengths of heavy gauge wire contact ViTREK for details if uncertain on how to construct this Equipment 1 must be a low resistance short at the 95x terminals Since the 95x is internally grounded the equ
67. 1 year at ambient temperatures within 5C of calibration temperature add 5 of accuracy specification per C outside of this All specifications are relative to the calibration standards used Add digit to all accuracies for displayed results results available with enhanced resolution from interfaces _ TEST CURRENT SOURCE Test Current 55mAdc max Opt LRE 10 10mAdc max Open Circuit Voltage 5V nominal Source Resistance 1300 nominal Opt LRE 10 530 Q nominal MEASUREMENT ACCURACY 2 WIRE l Measurement Period 7 25msec measurement period 100ms for test time gt 2 sec Accuracy lt 30KO 0 8 0 020 30 100K0 1 5 Page 79 of 151 95x Series Operating Manual April 23 2015 100 150KQ 5 Opt LRE 10 add 0 0010 Using rear terminals option RPO only add 0 30 Lead Compensation lt 1 of error 0 0050 MEASUREMENT ACCURACY 4 WIRE l Measurement Period 7 25msec measurement period 100ms for test time gt 2 sec Accuracy lt 30KO 0 8 0 0020 30 100KO 1 5 100 150KQ 5 Opt LRE 10 add 0 0010 Lead Compensation lt 11 of error 0 0010 4 wire Compensation SOURCE lt 1 total lead impedance 1000 max SENSE lt 0 1 total lead impedance 1000 max TEST TIMING l Test Time 0 02 to 9999sec or user terminated lt 0 05 20ms accuracy add 100ms for test time gt 2 sec Delay 0 00 to 9999sec lt 0 05 20ms accuracy add 100ms for test time gt 2 sec AC GROUND BOND TESTIN
68. 3 2015 ACTIONS WHILE RUNNING VOLTAGE RAMP DWELL DISCHARGE 0 to 10000secs 0 02 to 10000secs or user terminated 0 to 10000secs Breakdown and Arc Detection Active Min amp Max Leakage Limits Enforced e On any failure the step is immediately aborted and optionally the entire test sequence may be aborted e For the ACez type the discharge period is of zero length arc detection is not enabled and only RMS leakage limits may be specified e Ifthe step is the MANUAL sequence then the user may manually change the voltage and or frequency during the dwell period e For the ACW or ACCAP type the discharge period can be programmed to be skipped and the next step started at this steps dwell voltage level if the next step is an ACez ACW or ACCAP type CONFIGURING An example ACez type menu is as follows Seq 1 Step 1 ACez LEVEL 1500 0v 60 0Hz SOURCE INT RAMP 1 00sec DWELL 30 0sec Lim On 35 00mA ON FAIL ABORT SEQ An example ACW type menu is as follows Seq 1 Step 1 ACW LEVEL 1500 0V 60 0Hz SOURCE INT BREAKDOWN 49 50mApk RAMP 1 00sec DWELL 30 0sec Test 1 RMS Lim On 35 00mA Test 2 INPHS Lim On 5 000mA ARC DETECT 4us 10mA Page 47 of 151 95x Series Operating Manual April 23 2015 DISCHARGE AS RAMP ON FAIL ABORT SEQ An example ACCAP menu is as follows Seq 1 Step 1 ACCAP LEVEL 1500 0V 60 0Hz BREAKDOWN 49 50mApk RAMP 1 00sec DWELL 30 0sec C 0 488p
69. 300Vdc having at least SOOVA 750VA for Opt 500VA capability Opt LOLINE 85 to 130Vrms 45 to 450Hz Opt INRUSH 200 265Vrms 45 to 450Hz having at least 500VA 750VA for Opt SOOVA capability Measurement Measurement Category THE 95x MUST NOT BE USED IN AN ENVIRONMENT WHERE CONDUCTIVE POLLUTION CAN OCCUR E G IN AN OUTDOOR ENVIRONMENT IF FLUIDS OR OTHER CONDUCTIVE MATERIALS ARE ALLOWED TO ENTER THE UNIT ENCLOSURE EVEN IF NOT POWERED THEN THE UNIT SHOULD BE IMMEDIATELY TAKEN OUT OF OPERATION AND SERVICED AS SAFETY MAY HAVE BEEN COMPROMISED IF THE UNIT IS TRANSPORTED BETWEEN DIFFERING ENVIRONMENTS AND CONDENSATION IS SUSPECTED THE UNIT SHOULD REMAIN UNPOWERED FOR SUFFICIENT TIME FOR CONDENSATION TO HAVE DISSIPATED INITIAL INSPECTION After the 95x has been shipped or otherwise handled in an unknown manner the user should visually inspect the 95x for damage before attempting to operate it Particular attention should be taken to ensure that there are no significant dents or cracks in any outer surfaces and that all terminals are securely mounted to the unit If any significant dents or cracks or any loosely mounted terminals are noted then it is recommended that the 95x be serviced prior to being placed into use as safety may have been compromised COOLING The 95x is cooled by means of a rear panel mounted fan and cooling vents in the top cover Sufficient free air must be allowed behind the rear panel and above the top cover to
70. 51 95x Series Operating Manual April 23 2015 aa 17K 300GQ 17K 60GQ 17K 30GQ 0 6 t R 10GQ 0 6 R 1 75GQ 0 6 R 900MQ 1000V pa eats 34K 75GQ 0 6 R 2GQ 34K 35GQ 0 6 R 1GQ 0 6 t R 20GQ 2500V 84K 1 5TQ 0 6 R 50GQ 84K 80GQ 0 6 4 R 2 5GQ 84K 40GQ 0 6 R 1GQ 167K 3TO 167K 90GQ queer 0 6 R 100GQ 0 6 t R 2 5GQ ia TEO AERDEN N 1 34M 6TQ 1 34M 90G0 1 34M 40G0Q 0 6 R 200GQ 0 6 t R 2 5GQ 0 6 R 1GQ 10K 20GQ 10K 10GQ iia POR BOG et leave 2 00s 1 2 R SOOMQ 1 2 R 300MQ 250V 25K 150GQ 1 1 R 5GQ 25K 30GQ 1 1 R 1G0 ania 1 1 R 500M0 50K 300G0 50K 20GQ 500V o 50K 40GQ 1 1 R 1 3G0 a oa ae 100K 600GQ 100K 50GQ 100K 25GQ 1 1 t R 20GQ 1 1 t R 1 5GQ 1 1 R 700MQ o 250K 1 5TQ 250K 60GQ 250K 25GQ 1 1 t R 50GQ 1 1 R 1 75GQ 1 1 R 800MQ hay 500K 3TQ 500K 60G0Q 500K 25GQ 1 1 R 100GQ 1 1 t R 1 8GQ 1 1 R 800MQ 10000V 1M 6TQ 1 1 R 200GQ 1M 60GQ 1 1 R 1 8G0 T a o 15000V 3M 10TQ 1 6 R 300GQ 3M 60GQ 1 6 R 1 8GQ Mee 1 6 R 800MQ CURRENT MEASUREMENTS DUT GROUNDED OPTION HSS ONLY Measurements are performed in the HV terminal of the 95x Breakdown Current 1uA to 50mApk DC 50kHz bandwidth lt 1 1uA accuracy lt 30usec detection time lt 3msec response time typically lt 500usec Leakag
71. G GBEZ AND GB These types are primarily for testing resistance values from a few microohms up to 80 at a user set AC test current between 0 1 and 40Arms typically for ground bond testing requirements of safety standards and also for high current connector cabling or component testing Both GBez and GB are performed in the same manner the difference between them is in the amount of configuration available The GBez type is intended for basic applications the GB type for comprehensive testing The GB type can be configured to provide the same testing as the GBez type GBez GB User set open circuit voltage limit No Yes RMS Impedance Min Max Limits Yes Optional In Phase or Quadrature Impedance Min Max Limits No Optional Timed Ramp No Optional Timed Discharge No Optional Smooth Transition to next test step if GB type No Optional Page 80 of 151 95x Series Operating Manual April 23 2015 ACTIONS WHILE RUNNING CURRENT TIME RAMP DWELL DISCHARGE 0 to 10000secs 0 02 to 10000secs or user terminated 0 to 10000secs Min amp Max Impedance Limits Enforced e Throughout the entire test the actual compliance voltage is measured and the test current reduced to maintain a constant voltage if above the user set limit in this situation the front panel C V LIMITED indicator is illuminated NOTE if this limiting occurs during the dwell period but the impedance measurement is within
72. GQ 80K 12GQ 80K 9 5GQ 1 3 R 400MQ 1 3 R 350MQ 1 3 R 280MQ _TEST TIMING l Ramp 0 01 to 9999sec 50kV sec max slew rate lt 1 0 1sec accuracy with typical loads 0 5sec minimum for 957i only Dwell 0 02 to 9999sec or user terminated lt 0 05 20ms accuracy add 100ms for dwell time gt 2 sec Delay 0 00 to 9999sec lt 0 05 20ms accuracy DISCHARGE Always selected 951i 952i 956i Nominal loading 7MQ 953 5i Nominal loading 13MQ 957i Nominal loading 17MQ Auto selected resistance values in real time during discharge Selection Criteria lt 400W power lt 400J energy lt 7500V current lt CNFG TEST MAX DISCHARGE setting 951i 952i 956i Nominal loading 9 5KQ or 40KQ 953 4i and 957i Nominal loading 9 5KQ or 40KO or 240KO 955i Nominal loading 15KQ or 40KQ or 240KQ lt 20ms 10ms per kV below 7500V PULSED VOLTAGE WITHSTAND TESTING PULSE This type of testing is performed whenever it is required to test that a device can withstand a voltage without breakdown or arcing but the device will not withstand the voltage for significant periods of time An example of this is in the testing of the voltage withstand capability of physically small resistors in this case the resistor may not be able to withstand the power dissipation if the voltage is applied for lengthy periods of time so normal AC or DC Voltage Withstand testing cannot be performed Page 69 of 151 95x Series Oper
73. HE 95x WITHOUT A FAN FILTER INSTALLED If the filter is damaged e g is torn then it must be replaced When replacing the filter into the cover take care to ensure the filter is installed flat and does not impair operation of the fan DISPLAY FILTER CLEANING Visually inspect the cleanliness of the front panel display filter If it is excessively dirty then it should be carefully wiped with a soft lint free cloth wetted with a weak solution of dish soap Commercially available pre wetted wipes may also be used however under no circumstances should alcohol based cleaners be used on the front panel screen as it may damage the surface Page 108 of 151 95x Series Operating Manual April 23 2015 TERMINAL INSPECTION Visually inspect the terminals and the area immediately around them in the front and or rear panels and clean them if required IF THE INTERNAL SURFACES OF TERMINALS ARE WETTED DURING CLEANING THEN ENSURE THAT THEY ARE FULLY DRIED BEFORE OPERATING THE 95x AT HIGH VOLTAGES OTHERWISE SAFETY MAY BE COMPROMISED Carefully visually inspect the high voltage terminal shrouds for mechanical damage If there is any cracking in the shroud then safety may be compromised and the terminal should be replaced Replacement of high voltage terminals should only be carried out at VITREK or one of its certified repair establishments SELF TEST Prior to performing a self test the 95x must have been continuously powered and turned on for at least
74. HSS Current VELITICATION aineena ai a O E E E A E A AE eaa a aa cae qa 900 i n 119 SECTION 11 PROGRAMMING VIA AN INTERFACE cccceseesecnececeeeceesenaececececeseeaaeeeceeecesneaucaeeeeeeeseesuaaeeeeeeeseeaaees 120 General COMMAN SyntaX titi e Ei Ea a a Eaa a E Eaa akaid a Es 120 E ESE AEE E E A AEEA A N A E E E S 121 El Pt a E a SS uate 122 COM Mand EP A a a E A EETA 122 COMMON A A A A a a a AA 122 General RESPONSE MA lis 122 Delay NA Time Outs ii A A A A E A AE A A ai 123 Multiple Interface Operativa da a di E a da cad 123 Front Panel Operation While Using Interfaces ooooooooccncconononooncnnccononennnnnononnnonononnnnncnnonnnnononnnnnnnnnnonnnnnnnccnnanenonnns 123 GPIB BUS COMMANGS ci 5 0ssccsccreesseatectetesnaetsnnastuhdauivedbsseudecbelanettcaswes colts SET ET T 124 Device Clear SDG and DEL EEEE E techs SA erat 124 Interface Clear IEC A A a eats aa RSs A Seen Cad RON ROR 124 Group Execute Tiger GET EE E E ea E N E E E EE E E 124 Ethernet Sessions A NN NN 124 Status ROBIN E dad AA id 125 SIB INOLSRE Re BIS terior onda ion in ERA AS Aide cai 125 AA A RR 125 ESR Re anno Ate 126 ERRE naa 126 A RN NN NN 127 ADNA RESPONSE els ii o iones 131 ACez Configuration Fields ii A EEE ame techie 131 AGW Contiguiration Pelli a aan teenie 132 DCez ConTiguration Fields ii A A as 133 DCW Configuration FleldS iii aaa a Atico 134 DCIR Config ratiom AN 135 GBez Configuration Fell ii A lads A A da nee 136 GBiGontiguration F
75. ING When it is required to test a highly capacitive DUT typically gt 0 1uF the user must use DC testing as the current flow would be too high if AC or pulse testing were attempted see the applicable Specifications section for details Some standards require that testing be performed using an AC voltage waveform others require a DC voltage but others allow either to be used Also some DUTs may need to be tested using a DC voltage for other reasons such as non linearity Generally leakage testing is performed using a DC voltage however the 95x is also capable of accurately measuring resistive leakage using an AC voltage In some applications the DUT will not withstand the test voltage for an appreciable period of time because of the power dissipation caused by its leakage In these applications the user should choose to perform pulse testing which can be performed in as little as a few milliseconds with the 95x Note that this is different to static discharge pulse testing If AC testing is to be performed it is recommended that the frequency should be the expected line power frequency of the DUT i e 50 60 or 400Hz unless this frequency cannot be used because of loading considerations The frequency is generally not specified by standards To summarize selecting the type of testing is dependent on the requirement the following guidelines should be used in the order shown e If there is a specific requirement for the typ
76. ISOLATED l Measurements are performed between the HV and RETURN terminals of the 95x For applied voltage breakdown current and arc current accuracies see above In the chart below R is the reading in Ohms C is the capacitive loading Interpolate between voltages as needed for accuracies at capacitances above 5uF consult ViTREK Accuracies are shown as the percentage of the reading Test C lt 0 01uF C 0 01uF to 1uF C 1uF to 5uF Voltage 951i 952i or 956i 10K 20GQ 10K 10GQ je 0 Hi id a e 0 8 R 600M0 0 8 R 400MQ 100V 1OK 60GQ 0 7 R 2G0 10K 30GQ 0 7 R 1GQ 10K 20G0 0 7 R 600MQ 250V 10K 150GO 0 6 R 5GQ 10K 60GAM 0 6 R 1 5G0 10K 30GQ 0 6 R 1GQ 10K 300GO al O O 500V 0 6 R 10G0 10K 80GQ 0 6 R 2 5G0 10K 40GO0 0 6 R 1GQ 20K 6006G0 on O 2 O 1000V 0 6 R 20G0 20K 100GO 0 6 R 3G0Q 20K 50GO 0 6 R 1 5GO 2500V 50K 1 5TQ 0 6 R 50G0 SOK 100GQ 0 6 R 3GQ 50K 50GQ 0 6 R 1 5GQ 5000V net ne 100K 100GQ 0 6 R 3GQ lidad 0 6 R 100GQ 0 6 R 1 5GQ 953i 954i or 955i 10K 15GQ 10K 10GQ f 0 FUN 10 3060 LO BAEHR TEO 0 8 R 500MQ 0 8 R 300M0 10K 25GQ 10K 15GQ E f 0 id ibid das 0 7 R 800M0 0 7 R 500MQ 10K 25GQ 250V 10K 150GQ 0 6 R 5GQ 10K 40GO 0 6 R 1 3G0 0 6 R 750MQ Page 67 of 1
77. L key e The display shows the last used test sequence number and the name associated with that test sequence An example is DELETE TEST SEQUENCE 2 95x LINE HYPOT e Asneeded change the test sequence number to select the desired test sequence by using the Up Arrow or Down Arrow keys or using the numeric keys then press the ENTER key The selected test sequence is now deleted from the 95x internal non volatile memory SELECTING AND RUNNING AN EXISTING TEST SEQUENCE e Ensure that the display indicates that the 95x is in the base menu state i e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base menu state e Press the SELECT key e The display shows the last used test sequence number and the name associated with that test sequence An example is SELECT TEST SEQUENCE 2 95x LINE HYPOT e As needed change the test sequence number to select the desired test sequence by using the Up Arrow or Down Arrow keys or using the numeric keys then press the ENTER key The selected test sequence is now made ready to be run NOTE Whenever a test sequence has been selected and is ready to be run the front panel READY indicator is illuminated If the READY indicator is not illuminated then either no test sequence has been selected or it is not ready to run at that time e g it is already running or the user is viewing the results of a previous run and FAST RERUN has been disabled In
78. NMEUPATION a A ERAS 96 AAA O ONO 97 Controlling the 95x by the GPIB Interface ooccccconocooncnnonncononnnnonononononannnnncncnnnnnonnnnnoncnnnnnonnnnnnnnannnnnnnnnnancnnnanonnnnss 97 COMPS UATION E cdevadeadeas A E E Waba dues dacbavea te A 97 GOMMECTIONS O A NO 98 Controlling the 95x by the Ethernet Interface cccocooooocnncnocononoonnnnonononononnnnnnnccnnnnonnnnnnncnnnnnnnnnnnnconnnnnnnnnnnncnnnnnannnnss 98 SPECITICATI ONS NN 98 GONPIGU ATION da 98 e NN 100 Page 5 of 151 95x Series Operating Manual April 23 2015 Printing from the 95x using the USB Interface cocooocoonccnccononooooncnnccnnononnnnnoncnnnnnononnnnnnnnonnnnnonnnnnnnanonnnnnonnnnccnnanenonnos 100 PECAR A O O alii 100 Connecting e tanda 100 PRINTING Ss O RA 101 SECTION 3S DIO INTERFACE cciic3 ssccsectecoes ion in inaianei e eane rE annie aaa aaaeei ani EERE 102 Connector and Pin E eroinin e tik cae e a aiaei Editada 102 COMMUNES AA A E Mes A 103 A A EE EEE RN 104 Tea TIE CENE AET o1 ROA 105 ENA LANTI AT e EE E E ia 105 Starting with the START Signaleert ie a ake nido E EAEE ERATE E tueveddechesesdevectacdecdestsessnetadcesses 106 Aborting with the ABORT or INTERLOCK signalS coooococcnnccncononooncnncnnconononononcnnonannnnnnnncnnonnononnnnnnncannnnnnnnnnnncos 106 PASS FAIL and TESTING signals at the end of a Test Sequence ccccconococnnononononononnnnnnncnnononnnonnnnnnnconenonnnnncnncanons 106 HV PRESENT and DWELL Output Signals
79. NTERFACE AUTOMATIC SAFETY ABORT e For AC or DC voltage test steps if the breakdown current level is set to lt 7mApk and the HI SAFETY setting in the CNFG TEST menu is enabled the 95x will fail the test if excessive HV terminal current is detected This effectively reduces the drive capability of the 95x to a safer level of current nominally 7 5mA peak during these test steps See Test Sequence Configuration e For ACor DC voltage test steps the RETURN terminal of the 95x provides a protective ground to the DUT The user may wish to take precautions to ensure its connection to the DUT If the CONTINUITY SENSE setting in the CNFG TEST menu is enabled and the user connects a separate wire between the SENSE terminal of the 95x and the portion of the DUT to which the RETURN terminal wire is connected then if the RETURN terminal wire becomes disconnected from the DUT the test step will be immediately aborted and the high voltage removed preventing a potentially unsafe condition See Test Sequence Configuration e For ACor DC voltage test steps if the voltage present on the HV terminal is detected as being significantly different from that expected during the execution of a test step then the test sequence is immediately aborted and any high voltage removed preventing a potentially unsafe condition This requires no specific configuration by the user e All processors in the 95x which participate in monitoring the output of the 95x and
80. OR LONG PERIODS OF TIME AFTER THIS OCCURS WARNING DO NOT REMOVE THE POWER CORD FROM THE 95x OR FROM THE SOURCE OF POWER WHILE IT IS OPERATING AT HIGH VOLTAGES THIS WILL REMOVE THE PROTECTIVE GROUND FROM THE CHASSIS OF THE 95x AND THE DUT WHICH MAY RESULT IN HAZARDOUS VOLTAGES BEING ACCESSIBLE TO THE USER TERMINALS AND WIRING WARNING THE 95x PRODUCES VOLTAGES AND CURRENTS WHICH MAY BE LETHAL ENSURE NO VOLTAGE OR CURRENT IS PRESENT WHEN CONNECTING TO OR DISCONNECTING FROM THE TERMINALS OR DUT The HIGH VOLTAGE OR HIGH CURRENT PRESENT warning symbol on the front panel of the 95x is illuminated whenever an unsafe voltage is present on the HV terminal or a high current is present between the SOURCE terminals WARNING THE 95x PRODUCES VOLTAGES OF UP TO 10kVrms ON THE HV TERMINAL S THE USER MUST ENSURE THAT CONNECTIONS TO THESE TERMINALS HAVE SUFFICIENT INSULATION FOR THESE VOLTAGES EVEN WHEN SUFFICIENT INSULATION IS PRESENT THE USER SHOULD NOT PUT ANY PART OF THEIR BODY IN CLOSE PROXIMITY TO THE CONNECTIONS WHILE HIGH VOLTAGES ARE PRESENT The insulation of the wiring to the HV terminal of the 95x must be rated for at least the highest voltage expected during the test sequence The user should ensure that all personnel remain at a safe distance from the HV wiring during testing When using high voltages even if there is sufficient insulation there may be significant capacitive coupling which can cause an unsafe current to flow to n
81. OUT This occurs after a printout is suspended by the printer for over 10 minutes PRINT ABORTED This occurs when the user aborts a printout using the front panel STOP button CONFIGURATION PRINTOUT This is commanded by pressing the PRINT key while the 95x is in the base menu state i e displaying the date and time The printout contains a complete listing of all the configuration settings and the build state of the unit TEST SEQUENCE PRINTOUT l This is commanded by pressing the PRINT key while the user is selecting a test sequence using the SELECT key The printout contains a full listing of all the settings for each defined step in the selected test sequence TEST RESULTS REPORT PRINTOUT l See Printing a Test Results Report Page 101 of 151 95x Series Operating Manual April 23 2015 SECTION 8 DIO INTERFACE Using the 95x Digital Input amp Output DIO interface the user may perform any combination of the following e Control the 95x using a PLC type device starting stopping selecting a sequence and determining the pass fail status e Control the 95x using external start and or stop switches e Abort a test sequence when a safety interlock is opened e Allow the 95x to illuminate external safety indicators CONNECTOR AND PINOUT USB GPIB ETHERNET PRINTER CONNECTOR CONNECTOR CONNECTOR DIO RS232 VICL OUT CONNECTOR CONNECTOR CONNECTOR The DIO signals are available at the rear panel of the 95x i
82. Optional End Test on Passing Leakage current or impedance No No Optional End Test on Steady or improving Leakage current or impedance No No Optional Detect Arcing No Optional Optional Immediate FAIL on arc current detection throughout step No Optional Optional Timed Discharge No Optional Optional Smooth Transition to next test step if DC Withstand type No Optional Optional Page 56 of 151 95x Series Operating Manual April 23 2015 ACTIONS WHILE RUNNING VOLTAGE TIME RAMP E DWELL 0 to 10000secs 0 02 to 10000secs or user terminated DISCHARGE 0 to 10000secs Breakdown and Arc Detection Active 0 to 10000secs For the DCez and DCW types on any failure the step is immediately aborted and optionally the entire test sequence may be aborted For the DCW and DCIR types the loading current is analyzed during the last of the ramp phase and compared to the configured minimum load capacitance for the step if enabled to do so If the step is the MANUAL sequence then the user may manually change the voltage during the dwell period if the load capacitance is low For the DCIR type on any failure other than leakage limit testing the step is immediately aborted The operation of the leakage limit test is dependent on the End On setting For the DCez type the delay is of zero length the discharge period is of zero length and arc detection is not enabled For the DCW and DCIR types
83. PACE gt the space character Throughout this section reference is made to whitespace characters the lt SPACE gt and lt TAB gt characters are considered whitespace characters Throughout this section reference is made to data field formats these are described in more detail later in this section lt EMPTY gt is an empty field containing nothing other than optional whitespace characters lt STRING gt is a general string of ASCII characters lt NR1 gt is an integer numeric lt NR3 gt is a floating point numeric lt BOOL gt is a boolean indicating true or false GENERAL COMMAND SYNTAX Every command takes the form of a set of one or more fields each field is separated from the next by a field separator The first field is always the command keyword the remaining fields and their syntax depends on the command keyword and in some cases the content of a preceding field in the command Multiple commands can be transferred as a single set of commands each command is separated from the next by a command separator If there are multiple query commands in a single set then each response is given as separate fields in the overall response which is not transmitted until all commands in the set have been successfully actioned The maximum overall length of a response set is 19999 characters except for the Ethernet interface which is limited to 1500 Commands are always actioned in the same order as they are received The end of a set
84. RD terminals of the 95x Apply the connections to the 95x terminals ensuring the connections are to the correct terminals and with the correct polarity and then set the source to provide the voltage DO NOT TOUCH TERMINALS OR CONNECTORS WHILE VOLTAGE IS APPLIED When the voltage is correctly applied press START to continue the procedure The user is now shown the difference in calibration at 1000Vdc between this calibration and the last calibration of the 95x If the change is acceptable then press START to accept it and continue the procedure otherwise abort the calibration by pressing STOP NOTE the 95x specification at this level is 0 3 The 95x display will show FAILED if the calibration is out of range for calibration not if the change is beyond the specification Page 112 of 151 95x Series Operating Manual April 23 2015 e The above step is repeated at levels of 500V then 100Vdc The 95x specification is 0 35 at 500Vdc and 0 75 at 100Vdc e The user is now prompted to provide a source of 50mAdc equipment 4 listed above between the SENSE and GND GUARD terminals of the 95x Apply the connections to the 95x terminals ensuring the connections are to the correct terminals and with the correct polarity and then set the source to provide the current When the current is correctly applied press START to continue the procedure The user is now shown the difference in calibration at 5 0mAdc between this calibration and the la
85. RT SEQ Example 4 It is required to test the leakage current of material sample over a range of voltages This is to be performed manually using an external source of voltage This could be a DC or AC test for this example DC is used Page 89 of 151 95x Series Operating Manual April 23 2015 The external voltage source is connected to one end of the material sample with its common terminal grounded and the 95x RETURN terminal is connected to the other end of the material sample If the voltage being used is within the measurement capability of the 95x then the output of the external voltage source could also be connected to the HV terminal of the 95x in which case the 95x display would also show the actual applied voltage to the material sample A single step is used as follows Seq 1 Step 1 DCI DC leakage required so use DCI TIME user sec Use manual timing press the START button when finished Delay 0 00sec Already connected so no delay needed Lim On 5 000mA Set wide limit the user will manually check the results ARC DETECT OFF ON FAIL ABORT SEQ Not required so disabled SPECIFICATIONS Specifications are valid at the 95x terminals for 1 year at ambient temperatures within 5C of calibration temperature add 5 of accuracy specification per C outside of this All specifications are relative to the calibration standards used Add digit to all accuracies for displayed results results available with enhanced
86. SB interface is not fitted so there is no printout capability DISABLED Indicates that the user has disabled the ability to perform printouts by setting the DISABLE USB setting in the CNFG INTERFACES menu to YES NOT FOUND Indicates that no valid printer has been detected as being connected to the 95x USB port ATTACHED Indicates that a valid printer is attached to the 95x USB port and can be used for printouts o HEADING This allows the user to enter a global 7 heading for all printouts This can be up to 12 characters long and can be any alpha numeric characters If this is blank then the 2 heading is omitted from all printouts Typically this is used to allow the user to print their company name or department name on all printouts o AUTO TEST REPORT This allows the user to set whether the 95x will automatically print a test report when a test sequence terminates YES or not NO The user can also command a printout by pressing the PRINT button while reviewing test results independently of this setting o TEST DETAIL This sets the amount of detail to be included in the printed test report BRIEF The pass fail status reason for failure if any and the level and frequency are printed for each test step having a result NORMAL The pass fail status reason for failure if any the level and frequency the test limits and the maximum minimum average and last measurements are printed for each test step having a r
87. SERVICABLE PARTS AND REQUIRES NO INTERNAL PERIODIC MAINTENANCE THE COVERS OF THE 95x SHOULD ONLY BE REMOVED BY ViTREK OR ITS SERVICE CENTERS REMOVAL OF THE COVERS MAY AFFECT WARRANTY AND CALIBRATION CERTIFICATION The following procedures are recommended to be performed at monthly intervals These require no special tools or equipment and take the average user about ten minutes to perform CLEANING AND INSPECTION CABLE INSPECTION Carefully inspect the power cord any high voltage cabling and if Opt AC 30 is fitted all cables to the external AC 30 transformer for breaks abrasions or cracks in the outer insulation Replace any cable found to be damaged If a high voltage cable has become excessively dirty then the user should clean it by wiping it with a wetted cloth with a cleaning agent if needed If a high voltage cable is wetted ensure it is fully dried before returning it to use FAN FILTER CLEANING With power completely removed from the 95x visually inspect the cleanliness of the fan filter The fan filter is located on the rear panel of the 95x near the power entry socket DO NOT REMOVE THE FOUR SCREWS SURROUNDING THE FILTER 3 FAN FILTER To remove the filter pull on one of the tabs on the filter cover to remove the cover and then remove the filter itself Carefully brush off or blow out any dirt which may have accumulated on the filter Replacement filters can be purchased from ViTREK if needed DO NOT OPERATE T
88. SHED CALIBRATION for a short time The user should remove all equipment and connections from the 95x DO NOT REMOVE POWER FROM THE 95x OR TURN OFF THE POWER SWITCH FOR AT LEAST 5 SECONDS AFTER COMPLETING THE CALIBRATION PROCEDURE VERIFYING CALIBRATION Prior to performing a Verification procedure the user should first perform the self test procedure as described in Self Test The 95x has a built in automatic verification sequence which may be followed by the user In some circumstances the user may wish to not use this built in sequence but use their own sequence The user can use any verification sequence which they wish by building a special test sequence in the 95x and then using external equipment to monitor the voltages and or current during the execution of the sequence This document does not cover the details regarding how to do this but is limited to the steps in the internal automatically sequenced verification procedure Please note the following In several steps the equipment needed to perform performance verification is highly specialized and may not be available to many users Making very high voltage measurements with high precision requires special skills and equipment particularly when performing high AC voltage testing If there are any doubts regarding the correct methods to use consult the manufacturer of the test equipment being used The 95x should be fully powered and turned on for at least 10 minutes
89. These are used to test that a DUT does not exhibit breakdown or optionally arcing in the presence of an applied AC voltage and optionally to test that the DUT leakage current impedance or capacitance is within user set limits All are performed in the same manner the difference between them is in the amount and form of configuration available The ACez type is intended for basic breakdown detection the ACW type for comprehensive breakdown arcing and leakage testing the ACCAP type for breakdown and capacitance value testing The ACW type can be configured to provide the same testing as the ACez type ACez ACW ACCAP Separate Breakdown and Leakage Current Limits No Yes Yes Immediate FAIL on Breakdown detection throughout step Yes Yes Yes Dual Leakage Current and or Impedance Min Max Limits No Optional No RMS Leakage Current and or Impedance Min Max Limits Yes Optional No In Phase and or Quadrature Leakage Current and or Impedance Min Max Limits No Optional No Capacitance and optional Dissipation Factor Min Max Limits No No Yes Immediate FAIL on Min Max Limit detection during dwell Yes Yes Yes Detect Arcing No Optional Optional Immediate FAIL on arc current detection throughout step No Optional Optional Timed Discharge No Optional Optional Smooth Transition to next test step if also AC withstand type No Optional Optional Page 46 of 151 95x Series Operating Manual April 2
90. VITREK 951 to 957i and 959i OPERATING MAINTENANCE MANUAL 95x Series Operating Manual April 23 2015 About thisiMa Nal 5 2 seccticoses cutscene dad desd EE dd dad add da 9 Warranty ln detent eneees bet boxe eve eb bbendedand decease ends esonen beter E N 10 SECTION 1 PRODUGTAINFORMATION o aa 11 A SS ise cak se RN ON ER 11 Available Models and Options ccccccccccecssssssssecececsesesseeecececeeseseeaeseeeceseeseeaeseeeeeseeseaaeseeeesceesseaeseeeesceeseaasaeeeesceeeea 12 IFTELTACINE OPTION ie scores sacs ce ceva des rack less So dias 12 DE VOltASE OPtlON s ii A A A de ion wens 12 Internal AC Voltage Options iii anna a a Camada cien aii 12 Internal GROUND BOND Op Oe a a a a ar aa a aa aaa EE A A E a A ea e EA EEE E E EERE innis 13 External AC Voltage OPIO iii a a a a a E e EEs 13 P ls e Testing Optio eiretie a e EE Eae AOLE EE EEEE EEA EEA ROERE EEA E EERE E EE aE R Eiai EATE 13 DUITAMA EASE E E A E AE E EE E OEA AEEA E AS E E E AT 13 TEAM O oio Ana AEA NE EA SET A AOE E A S AEA E A E A EO AEAT 13 Power Inp ut Option e rm a A aitai 13 Rack Mounting Optinen a E E A a a E cadens Sins a E KR 13 Output Voltage Current Limiting Options ccccccssccesssecssccesscecssecessecessecessecessecesseeessecessesessecessecesseceseeeaseesees 13 SECTIONS SAFE TV e ice 15 POWER ANACO OE de boencadies ude E A A A duldvedadvestiaudatecsereennsentelees 15 TERMI Mas aM WIS eters cen acs tes O ARNO 15 User Activated S
91. a EEE r NEE SEPEN EE EEA SSES a Aaaa NERS 145 Programming GUIONES criaron cana in i aeaa de died aeaa asa 146 Migrating from Earlier Firmware Versions cc ccecceecceeceerceeecesecaeceaecaeecaeecaeeeaesenesaeeaeseeeceaeceaeceaeceaecaaesaeeseeeaeeeneees 149 Page 8 of 151 95x Series Operating Manual April 23 2015 ABOUT THIS MANUAL Throughout this document the instrument is referred to as the 95x this applies to all instruments in the 95x series having a main firmware revision of 2 02 there may be differences if the 95x being operated has a different main firmware version At the end of this manual is a section detailing the differences between v2 02 and earlier versions of the firmware see Migrating from Earlier Firmware Versions Due to continuing product refinement and possible manufacturer changes to components used in this product ViTREK reserves the right to change any or all specifications without notice This manual has been created with clickable links Where a reference is made to another section of the manual the user may click on the section name reference and the document will automatically go to that section The table of contents is clickable The user may click on any of the entries to go to that section The table of contents is also made available as Bookmarks for Adobe Reader or Acrobat allowing the user to permanently display the table of contents alongside the document and navigate by clicking on e
92. a an interface e Impedance and resistance results are calculated from voltage and current measurements For near zero and negative current measurements the 95x displays the maximum meaningful resistance value preceded by the gt character REVIEWING TEST RESULTS AFTER RUNNING A TEST SEQUENCE Immediately after running a test sequence and temporarily displaying an overall pass fail status message the 95x automatically initiates reviewing the detailed test results The results of a previously run test sequence can also be manually reviewed later by pressing the VIEW key if the READY indicator is illuminated indicating that the test sequence is still ready to be run If the test sequence failed then the review is initiated at the first failed step otherwise it is initiated at the first test step in the test sequence The following table shows example displays of reviewed results and their meanings See the descriptions following the table for a description of each of the fields in the display 01 01d 1500v 60 0Hz 5 0s PASS 2 10mArms The measurement being reviewed was within limits 01 01d 1500v 60 0Hz 5 0s DET 28mAarc Arcing was detected during the test but the 95x was not configured to fail on arc detection 01 01d 1500v 60 0Hz 5 0s FAIL 28mAarc Arcing was detected during the test which caused the step to fail 01 01d 1500v 60 0Hz 1 55 gt MAX 2 10mArms The measurement being reviewed was above the
93. a minimum capacitance load which should be encountered during ramp If this loading is not encountered during ramp then the test is failed with a lt MIN LOAD status This provides an easy to use and very sensitive determination of whether the load is properly connected Please note the following O For settings of below 1nF there must be enough charging current flow during ramp for the set minimum capacitive load to be successfully detected For a DUT GROUNDED setting of NO or option HSS not fitted then the ramp rate should be gt 1000V sec for a 1pF setting reducing to gt 1V sec and lower for a 1nF and higher setting For a DUT GROUNDED setting of YES a setting below 1nF is not recommended For settings of over 1nF then the actual load capacitance is estimated during ramp and compared to the Min Load setting this has no minimum ramp time requirement This is not an accurate DUT capacitance measurement the accuracy is typically 10 If there is sufficient resistive load then this is automatically detected and there will be no lt MIN LOAD failure If the expected capacitive load is known then a setting of half the expected capacitance is recommended e DWELL Allows the dwell time period to be programmed to the desired time or it may be set to be user terminated by pressing the LIMIT key while this setting is selected e Delay Not available for the DCez type Allows the user to program a delay within the dwell period
94. ach section as needed Page 9 of 151 95x Series Operating Manual April 23 2015 WARRANTY INFORMATION This VITREK instrument is warranted against defects in material and workmanship for a period of 1 year after the date of purchase extended up to a total of 3 years with registration and annual calibrations at VITREK ViTREK agrees to repair or replace any assembly or component except batteries found to be defective under normal use during the warranty period ViTREKs obligation under this warranty is limited solely to repairing any such instrument which in ViTREKs sole opinion proves to be defective within the scope of the warranty when returned to the factory or to an authorized service center Transportation to the factory or service center is to be prepaid by the purchaser Shipment should not be made without prior authorization by ViTREK This warranty does not apply to any products repaired or altered by persons not authorized by ViTREK or not in accordance with instructions provided by ViTREK If the instrument is defective as a result of misuse improper repair improper shipment or abnormal conditions or operations repairs will be billed at cost ViTREK assumes no responsibility for its products being used in a hazardous or dangerous manner either alone or in conjunction with other equipment Special disclaimers apply to this instrument ViTREK assumes no liability for secondary charges or consequential damages and in any eve
95. afety ADORE EE E E E A Ada ane 16 Automatic Safety ADO Einicio dean e a ARO a a SISI ARA ORAR ASA Ea 17 SECTIONS INSTALLATION crias tes oo 18 General PECHINA ia 18 DAN totes AEA EA A E AE A AAT 18 EA AE E TA E A E E E OE EA E E 18 Mounting Position and OrientatiON coooooocccncconononoonnnncnnnonononnnnnonnnnnononnnnncnnnnnononnnnnnnnnnnnnnnnnnnnnnnnnnnonnnnnnnccnnnnnnnanennnos 19 Installingina t9 Rack ENClOSUTE ii A EE E E E 19 EVE POW A A NN 19 Connecting Option AC 30 to the 95x ecccccsssecccecsessssscecececeeseeesesecscesseeeeeseeecessesseaeseeececseseeaeseesesseeseaaeseesesseeeaaes 19 SECTION 4 GENERAL FRONT PANEL OPERATION ceceeeesessececececeeeeaeceeeeeceeeeaaeeeeeeeceeseaaeaeceseseseeaaeaececeseseeneeaeeeeees 21 A a o NA NN 21 MENTE ER RN 23 Base Menu State ie cecisnss idesssicedivectbias cccevessecds acesaseddieshbansensianddsestsidecesbsadeve boda evsiitesesdecdadsbncodive NEEESE bees 23 Navigating MENUS E TRA 24 Page 2 of 151 95x Series Operating Manual April 23 2015 Modifying Ment Entries dia 24 Adjusting the Display Contrast a ia 26 Locking and Unlocking M NUS cccccccessssecececsesssececececseseeaeeesececeesesseeeseeeceeeseeseseeeceeseseeeeseescessesesaeseesessseseaaeseeses 26 Unlockine Mens ci o dianas Esa 26 Setting Changing or Clearing a Menu Lock Password oooocccccononooooncnncconononnnnnonocnnonononnnoncnnnnnnnnnnnnncnnannonannnnnnncos 27 Relockings MENUS io A thet A A dened A
96. akage requirements usually of safety standards Both types are similar the difference being that the DCI type tests for DC ground leakage current while the ACI type tests for AC ground leakage current ACTIONS WHILE RUNNING During the test step the 95x measures the ground leakage current and checks that the result is within the user set range The 95x also measures the voltage on the HV terminal relative to ground and makes the result of this measurement available to the user if not required then this can be ignored Optionally the user can also detecting arc currents and fail the DUT if they are found over the user set limit The user can set for there to be a delay at the beginning of the test step before the limits are enforced on the ground leakage current measurement CONFIGURING An example DCI menu is as follows Seq 1 Step 1 DCI TIME 25 0sec Delay 0 05sec Lim On 35 00mA ARC DETECT 4us 10mA ON FAIL ABORT SEQ An example ACI menu is as follows Seq 1 Step 1 ACI TIME 25 0sec Delay 0 05sec Lim On 35 00mA ARC DETECT 4us 10mA ON FAIL ABORT SEQ e TIME Allows the user to program the total test time e Delay Allows the user to set a delay time before which the limits are not enforced e Lim Allows the user to set a minimum and maximum limit for the ground leakage current beyond which the DUT will be failed Page 87 of 151 95x Series Operating Manual April 23 2015 e ARC DETECT Allows the us
97. alid or Emot Valid or Emot Empty Empty pty pty Empty Empty Empty pty Empty pty 18 Valid or Valid or Empt Empt Valid or Valid or Valid or Emot Valid or Empt Empty Empty pty pty Empty Empty Empty pty Empty pty 19 Valid or Valid or Empt Emot Validor Valid or Valid or Emot Valid or Emit Empty Empty pty pty Empty Empty Empty pty Empty pty PROGRAMMING EXAMPLE If the user wishes to be able to send a command to the 95x to test that the interface is active and functioning then the following could be used Example 1 e Send IDN lt CR gt lt LF gt don t type the lt CR gt lt LF gt just ensure that your application sends a carriage return and or line feed e Read the response back from the 95x it should be similar to VITREK 952i 000000 v1 45 v1 23 v1 23 v1 23 e Refer to e e IDN Response Fields for details regarding the response Example 2 e Ensure there are no connections to any terminals on the 95x this example is not applicable to the 959i e Send NOSEQ ADD ACEZ 1000 0 60 0 1 5 5 0 0 0 0 005 ABORT RUN lt CR gt lt LF gt e The 95x will perform an ACez test at 1000Vrms 60Hz with a 1 5sec ramp and 5sec dwell e After completion send STEPRSLT 1 lt CR gt lt LF gt e The 95x responds with the results for the step which should be similar to 3 5 01700E 00 0 1 00012E 03 60 0000E 00 82 3600E 09 2 22916E 09 2 10947E 09 2 18633E 09 2 17637E 09 e Refer to e STEPRSLT Respons
98. and DCIR types in the way in which the ramp is defined the user will have to convert from defining the ramp as a target charging current with a maximum ramp rate and a ramp timeout to an actual ramp rate or time and a breakdown current and otherwise the types are the same o Previously the DCCAP and IRCAP types produced less initial current surge when starting the ramp into a capacitive load this version provides a significant improvement in this surge in the DCW and DCIR types so that difference is no longer of concern o Previously the DCCAP and IRCAP types offered limiting the discharge current to that set for the ramp This version allows the user to independently set a maximum discharge current if desired e The ACIR type step is no longer available Recalling a sequence containing this step type created in an earlier version will cause the 95x to automatically convert it to an identical ACW step e The local line frequency setting has been removed from the CNFG SYSTEM menu The commands affecting that setting LINE50 and LINE50 lt BOOL gt are still available but do only affect a dummy setting o The user need not alter their software if they were previously using that setting however these commands may be removed in the future e Anew option has been made available option HSS which enables the user to select whether leakage and breakdown currents are to be detected in the HV or RETURN terminal Without this option only
99. anual April 23 2015 LEAD COMPENSATION 4 WIRE Lead Compensation is not usually performed when using a 4 wire measurement since lead resistance is automatically eliminated If a 4 wire test is configured but the DUT is connected in a 2 wire manner e g separate wires for SOURCE and SENSE but they are shorted together before the connection to the DUT then a Lead Compensation may be performed in the same manner as for the 2 wire configuration above EXAMPLES Example 1 A DUT has a 500 input and it is desired to check that the input impedance is within 5 of the nominal 500 value This is accomplished in a single step as follows Seq 1 Step 1 LOW 2 4 WIRE 2 WIRE Lead resistance is well below 2 50hm so 2 wire is chosen TIME 0 10sec Load has very little capacitance so use a fast time Delay 0 00sec Load has very little capacitance so no delay needed Lim 47 50 52 500 As required ON FAIL ABORT SEQ Example 2 It is required to test that a DUT chassis is bonded to its grounding terminal with no more than 0 1ohm of resistance This is accomplished in a single step as follows Seq 1 Step 1 LOW 2 4 WIRE 4 WIRE Lead resistance is significant so 4 wire is chosen TIME 0 10sec Load has very little capacitance so use a fast time Delay 0 00sec Load has very little capacitance so no delay needed Lim 0u 100m0 As required ON FAIL ABORT SEQ SPECIFICATIONS Specifications are valid at the 95x terminals for
100. ating Manual April 23 2015 ACTIONS WHILE RUNNING VOLTAGE TIME RAMP tr RAMP HOLD tr 0 5 to 20ms 0 5 to 30ms Breakdown and optionally arc detection is performed throughout the test On any failure the pulse is immediately aborted A UNIPOLAR pulse is shown above a UNIPOLAR pulse has the same timing but has the opposite voltage polarity a BIPOLAR pulse is a pair of opposite polarity pulses positive first with no delay between them A delay is enforced following the pulse s to allow any stored energy in the 95x or the DUT caused by asymmetry in the waveform to dissipate o After a unipolar pulse of either polarity or after an abnormally terminated bipolar pulse this delay is 500ms o After a normally terminated bipolar pulse this delay is 40ms CONFIGURING An example PULSE menu is as follows Seq 1 Step 1 PULSE LEVEL 200 0v POLARITY UNIPOLAR BREAKDOWN 150 0mApk RAMP 1 0msec HOLD 1 5msec ARC DETECT 4us 10mA ON FAIL ABORT SEQ LEVEL Allows the test voltage level to be programmed For a bipolar pulse both polarities have nominally the same voltage amplitude o The amplitude of the pulse is not accurately controlled by the 95x during this type The actual peak voltage amplitude is displayed for review after a test step has been run enabling the user to adjust the peak test voltage for a specific DUT Alternatively the 95x can do this semi automatically by using the Lead Compensat
101. ause the indicator to be illuminated when testing Note if instead the user wished to have a High Voltage warning indicator then this is similarly accomplished by using the HV DETECT signal instead of the TESTING signal Example 2 It is desired to use an external mechanical switch to start a sequence rather than the 95x front panel START button The test sequence will be manually selected at the 95x front panel The switch will be momentarily actuated to start a sequence In this case the mechanical switch should be connected between DIO connector pin 3 COMMON and pin 4 START Assuming that the switch is to be closed to start a sequence the user should configure the START input as ACTIVE LO and the SEQUENCE inputs as IGNORE Example 3 This is the same as example 2 but the external switch will be held closed during the test sequence If the switch is released during the sequence then it will be aborted In this case the mechanical switch should be connected between DIO connector pin 3 COMMON and both pins 4 START and 5 ABORT The user should configure the START input as ACTIVE LO the ABORT input as ACTIVE HI as and the SEQUENCE inputs as IGNORE Example 4 This is the same as example 2 but the user wishes to always run sequence 3 when the external start switch is activated The user will not need to select a test sequence from the front panel In this case the mechanical switch should be connected between DIO conne
102. be compensated for in highly sensitive applications The Continuity Sense feature may also be used with this wiring configuration 95x DUT High Voltage Wire RETURN Low Voltage Wire The example above shows the connections for performing an ACCAP type step to check a capacitor for value and breakdown TESTING A GROUNDED DUT OPTION HSS ONLY In this case the user only need connect the HV terminal of the 95x to the point on the DUT which is to be tested It is expected that the DUT is grounded and that the breakdown and or leakage is being tested to ground For safety reasons or if unsure if the DUT is grounded it may be desirable to also connect the DUT ground to either the RETURN or GUARD terminals of the 95x however the user should ensure that the ground of the 95x and that of the DUT are within 5Vrms of each other otherwise excessive ground loop currents may flow potentially damaging the 95x It should be noted that the 95x will measure the leakage current to ground from the HV terminal and it s wiring in addition to the leakage current in the DUT itself Particularly when performing AC Withstand testing the wiring leakage current may be large because of capacitance between the wiring and nearby grounded objects or surfaces Page 51 of 151 95x Series Operating Manual April 23 2015 CHECKING THAT THE DUT IS CONNECTED l When testing a DUT using AC Voltage Withstand testing there is the possibility that a disconnecte
103. before the leakage range check is to be performed O The 95x series use a strong voltage source method for the DCez DCW and DCIR types This enables the use of much shorter test times when performing testing into capacitive loads since it is being both charged and tested from a low impedance source unlike the classical approach of using a high source impedance to reduce the effects of voltage source noise but needing very long test times into capacitive loads For the 95x there is a short stabilization period required after the end of ramp when making very low leakage current tests e g 10 s of nA with Page 59 of 151 95x Series Operating Manual April 23 2015 significant capacitance typically this is less than 0 5sec for loads up to 1uF extending to 5sec for loads of 10uF and above which should be accommodated by setting the delay setting accordingly After this there is no further settling time required for the 95x at any leakage current level If performing breakdown testing at higher current levels e g 100 s of uA and above then no delay is typically required Some capacitive loads have a significant dielectric storage affect Because of this there may be significant leakage current flowing for some time after the dwell period starts Depending on the materials dielectric storage effects can last from a fraction of a second to many tens of seconds or even longer e End On Only available for the DCIR type Allo
104. bond testing See DC Low Resistance Testing Low e Ifthe resistance is between 1uQ and 100 and it is allowable or required to measure using AC at a user defined current between 0 1A and 40Arms and a voltage up to 8Vrms 11 5Vpk use the AC Ground Bond capability of the 95x not all models have this capability Typical applications for this include chassis ground bond testing and cable resistance testing at high currents The 95x also offers the ability to independently measure the in phase resistance and quadrature reactance components of the DUT while maintaining stability with inductive loads for component testing applications See AC Ground Bond Testing GBez and GB DC LOW RESISTANCE TESTING LOWQ This type is primarily for testing resistance values from a few milliohms up to 100KQ using either 2 wire or 4 wire measurement methods ACTIONS WHILE RUNNING This type of test step is performed using a single measurement period The user may program for a delay at the start of the test period before the resistance measurement is checked against the limits This can be used to allow for capacitance in parallel with the DUT When programmed to perform a 4 terminal measurement the 95x continuously performs a set of checks that the DUT is correctly wired to the 95x throughout the test period CONFIGURING An example Low Q menu is as follows Seq 1 Step 1 LOW Q 2 4 WIRE 4 WIRE Page 76 of 151 95x Series Operating Manual A
105. both a current and power limit is shown the most stringent limit applies 951i 954i and 957i lt 100Hz SOmArms 40mArms resistive reduce by 0 08mA per V above 5525Vrms 951i 954i and 957i 400Hz 35mArms reduce by 0 065mA per V above 5600Vrms Option AC 2 lt 100Hz 200mArms 135mArms resistive reduce by 0 67mA per V above 1750Vrms Option AC 2 400Hz 140mArms reduce by 0 4mA per V above 1700Vrms Option 500VA lt 100Hz 100mArms 50mArms resistive reduce by 0 14mA per V above 5425Vrms 500VA Above 65mArms has a limited test time e g 1sec at 100mArms Option 500VA 400Hz 85mArms 50mArms resistive reduce by 0 11mA per V above 5375Vrms Above 65mArms has a limited test time e g 1sec at 100mArms 955i and 957i Opt AC 10 lt 100Hz 30mArms 20mArms resistive 955i and 957i Opt AC 10 400Hz 22mArms Option AC 30 10mArms 7mArms resistive 250VA SURGE CURRENT LIMITING AND SHUTDOWN l Impedance Limiting 951 4i and 957i standard build 12KQ 0 5H Opt 500VA 7KQ 0 25H Opt AC2 1 4KQ 0 2H 955i and 957i Opt AC10 25KQ 1 0H SOURCE set to EXT 200KQ Peak Shutdown Current 951 4i and 957i standard build 120mA Opt 500VA 145mA Opt AC2 280mA 955i and 957i Opt AC10 GOMA SOURCE set to EXT 21mA DUT GROUNDED set to YES 5 0mA TEST VOLTAGE AND FREQUENCY Test Voltage Range 951 4i and 957i standard build or Opt SOOVA 20 to 6000Vrms reduce maximum voltage by 0 6V per Hz above 100Hz 955
106. cks A safety related failure or a user abort STOP button always aborts the entire sequence CONNECTING TO THE DUT See Terminals and Wiring for general wiring and safety recommendations The 95x requires that the DUT at least that portion which is being measured is floating with respect to ground When making 4 terminal measurements the resistance of the wires the contact resistance to the DUT and the contact resistance within the 95x front panel terminals are not included in the result the only recommendation is that the SOURCE and SOURCE wires be of sufficient gage to withstand the user set test current When wired as shown below the actual resistance measured is that between the innermost connection points to the DUT i e between the SENSE and SENSE connections Page 82 of 151 95x Series Operating Manual April 23 2015 95x DUT SOURCE If there is more than nominally 1 5V peak between the respective SOURCE and SENSE terminals of the 95x then the test is failed with a WIRING FAULT condition the user must ensure that sufficient wire gage is used for the SOURCE wires there is very little current flow in the SENSE wires If the user needs to make optimum measurements of low impedances particularly less than a few 10 s of mQ then the following points should be considered The user should be aware that inductive coupling between the current flow in the SOURCE wires and the respective SENSE wires will caus
107. ctor pin 3 COMMON and pin 4 START and also pins 10 and 11 SEQUENCE 4 and 8 should be connected directly to pin 3 COMMON Assuming that the switch is closed to start a sequence the user should configure the START input as ACTIVE LO and the SEQUENCE inputs as ACTIVE HI Note the connections to the SEQUENCE inputs will select sequence 3 since SEQUENCE 1 and 2 are open circuit so will be high active while SEQUENCE 4 and 8 are grounded so will be low inactive Example 5 The user wishes to use a mechanical safety hood enclosure over the DUT which must be maintained closed during testing for safety reasons A magnetic switch is mounted on the hood which is closed when the hood is in position In this case the magnetic switch is used with the INTERLOCK capability of the 95x and should be connected between DIO connector pin 3 COMMON and pin 6 INTERLOCK If the safety hood is opened while the 95x is producing high i e unsafe voltages then the test will be immediately aborted However the user can still open the hood e g to make wiring changes to the DUT during the test sequence as long as they are made while there are no unsafe voltages present e g a HOLD step could be programmed in the sequence to allow the user to make the changes and then press the START button to continue testing Page 107 of 151 95x Series Operating Manual April 23 2015 SECTION 9 PERIODIC MAINTENANCE THE 95x CONTAINS NO INTERNAL USER
108. d then the power in the contact resistance between the DUT and the SOURCE wires particularly when using clips may be high causing the contacts to become hot at 40A the power in 1mQ is 1 6Watts Similarly the user should ensure that the connections to the front panel SOURCE terminals are fully secure the user is recommended to use lugs and not plug in connectors for currents above 10A Page 83 of 151 95x Series Operating Manual April 23 2015 The example below shows the connections to a DUT to perform a DC or AC withstand test on the Line Neutral line power input and an AC Ground Bond test on the chassis of the DUT in the same sequence If wired in this manner then no changes in connections are needed 95x DUT High Voltage Wire LEAD COMPENSATION Lead Compensation is not usually performed when using a 4 wire measurement since lead resistance is automatically eliminated If the DUT is connected in a 2 wire manner e g separate wires for SOURCE and SENSE but they are shorted together before the connection to the DUT then a Lead Compensation may be performed to offset the resistance of the common wiring in future runs Lead Compensation should be used with caution to offset errors caused by inductive coupling between the wiring the inductive coupling effect is not strictly an offset error as it varies with the DUT resistance and reactance and the use of Lead Compensation could introduce significant errors When
109. d DF results required for certain testing applications For the ACez and DCez types the 95x uses the user set maximum leakage limit as the breakdown limit For all other types the 95x allows the user to independently set both breakdown and leakage limits In all cases setting a minimum leakage limit of zero disables the minimum leakage limit ARC CURRENT AND TIME l Arcing is similar to breakdown but rapidly self extinguishes without requiring a reduction in the applied voltage but typically rapidly re occurs repeatedly There are many ways in which arcing can occur and a thorough description of arcing is beyond the scope of this document Generally arc currents are AC currents in the frequency range of 1 to 2MHz and are fairly high amplitude often tens of milliamps or more and have no relationship to either breakdown or leakage currents Generally arcing can only occur at higher voltages gt 300V and only in a gas or in rare circumstances across a surface Page 45 of 151 95x Series Operating Manual April 23 2015 Arcing should not be confused with flashover which is a breakdown arcing can be very slight and is often not easily visible corona is a form of arcing but the arcs do not extend entirely across the air gap and so is also called partial discharge or partial breakdown Some safety standards do not require detection of arcing however users often decide to include arc detection because the presence of arcing is often an
110. d DUT will erroneously pass a test There is always some amount of capacitance within the load which will always cause an amount of current to flow when properly connected so the user is recommended to set a minimum RMS or QUAD current setting in one of the two allowed test limit ranges for the ACW type of step If not configured for a grounded load the user may also use the Continuity Sense feature to detect a disconnected RETURN path LEAD COMPENSATION For many applications lead compensation is not necessary for these types of test steps as the wiring leakage is generally smaller than the DUT leakage limit and so can be ignored However for the more sensitive requirements e g the more stringent levels of medical safety leakage testing and or when long lengths of wiring are required particularly if DUT GROUNDED is set to YES then lead compensation may be needed If the capacitance of loose wiring is to be corrected for and an isolated DUT is being tested then it is recommended to use shielding of the RETURN wiring rather than Lead Compensation as the capacitance between loose unshielded wiring is very dependent on the exact routing of the wires Performing a lead compensation compensates for the resistive and capacitive leakage currents in the wiring to the 95x in all future runs of this test step When performing a lead compensation the normal connections to the 95x should be in place with the wiring positioned normally only the DUT itself
111. d failure or a user abort STOP button always aborts the entire sequence CONNECTING TO THE DUT See Terminals and Wiring for general wiring and safety recommendations The 95x requires that the DUT at least that portion which is being measured is isolated from ground The DUT should be wired between the HV and RETURN terminals of the 95x The 95x provides a safety ground termination for the DUT during the test via its RETURN terminal When deciding which point on the DUT to connect to the HV terminal and which point to connect to the RETURN terminal the user should consider that only the voltage on the RETURN terminal is safe at all times 95x DUT High Voltage Wire RETURN Low Voltage Wire LEAD COMPENSATION This type of test step uses the Lead Compensation feature of the 95x in a different way to all other types as it does not compensate for any cabling effects but instead compensates for the loading effect on the 95x caused by the load resistance The output voltage level from the 95x cannot be accurately controlled for this type The output impedance when running this type is of significance refer to Specifications Page 71 of 151 95x Series Operating Manual April 23 2015 The 95x reports the actual highest voltage applied across the DUT following the end of this type of test step Using the reported actual voltage the user can manually adjust the programmed test voltage level to accommodate loading effects for f
112. d time of last executed period in seconds 3 lt NR1 gt Status of this step see Test Step Status Flags 4 lt NR3 gt or lt EMPTY gt Final test level in Volts or Amps 5 lt NR3 gt or lt EMPTY gt Final test frequency in Hz 6 lt NR3 gt or lt EMPTY gt Highest breakdown current in Amps peak 7 lt NR3 gt or lt EMPTY gt Highest voltage in Volts 8 lt NR3 gt or lt EMPTY gt Highest 1 check result 9 lt NR3 gt or lt EMPTY gt Lowest 1 check result 10 lt NR3 gt or lt EMPTY gt Average 1 check result 11 lt NR3 gt or lt EMPTY gt Last 1 check result 12 lt NR3 gt or lt EMPTY gt Highest 2 check result 13 lt NR3 gt or lt EMPTY gt Lowest 2 check result 14 lt NR3 gt or lt EMPTY gt Average 2 check result 15 lt NR3 gt or lt EMPTY gt Last 2 check result 16 lt NR3 gt or lt EMPTY gt Highest arc current in Amps 17 lt NR3 gt or lt EMPTY gt Lowest arc current in Amps 18 lt NR3 gt or lt EMPTY gt Average arc current in Amps 19 lt NR3 gt or lt EMPTY gt Last arc current in Amps Not all of the above fields are valid for each step type fields which are not used for a step type are empty The table below shows the valid fields for each step type The Check Result fields are empty if no check was defined or performed otherwise they have the same units as used for the check limits i e Volts Amps Ohms Farads etc
113. describes how to configure and connect to each interface Each description of menus only includes the settings pertinent to the section being described For the DIO interface see SECTION 8 DIO INTERFACE For programming information using an interface to control the 95x see SECTION 11 PROGRAMMING VIA AN INTERFACE NOTE The user is recommended to disable all unused interfaces to avoid interference affects USB GPIB ETHERNET PRINTER CONNECTOR CONNECTOR CONNECTOR DIO RS232 VICL OUT CONNECTOR CONNECTOR CONNECTOR LOCAL AND REMOTE OPERATION When the 95x receives a command from an enabled interface the front panel REMOTE indicator is illuminated and the user may not use the front panel menus To attempt to return the 95x into the local state the user should press the CNFG key on the 95x front panel If the 95x has been enabled to return to the local state by the controlling interface then the REMOTE indicator will extinguish and a message is displayed on the 95x front panel CONTROLLING EXTERNAL SWITCH MATRIX UNITS The 95x can be configured to control one ViTREK 948i or up to 4 ViTREK 964i Switch Matrix units NOTE the 95x must be configured to control an external Switch Matrix unit before a test sequence can be created which contains steps to control it CONFIGURATION e Ensure that the display indicates that the 95x is in the base menu state i e the display shows the date and time If necessary press the STOP butt
114. ding on the model being verified with a frequency range of at least 60 to 400Hz having an input impedance of 10MQ or greater and an accuracy which yields the desired error ratio to the 95x series accuracy see the AC Voltage Verification portion for the accuracies At all but the 100V level there is a very limited amount of products available All models A set of DC resistance standards of values 100KQ 10KQ 1000 and 10 capable of being connected using a 4 wire configuration and accuracies which yield the desired error ratio to the 95x series accuracy see the Low Ohms Resistance Verification portion for the accuracies This is achievable with most multi function calibration products e g Fluke or Resistance Decade Boxes e g ESI All models A shorting plug suitable for use between the SENSE and SENSE terminals This must have a resistance of less than 5mQ at a nominal 30mAdc current for a 4 1 accuracy ratio the 95x series specification is 20milliohms All models A true 4 wire short circuit having a 4 terminal resistance of less than 0 5mQ at a nominal 30mAdc current for a 4 1 accuracy ratio the 95x series specification is 2mQ and 952i 4i 9i only an impedance of less than 1 625uQ at 5Arms 60Hz current for a 4 1 accuracy ratio the 952i 4i 9i specification is 6 5uOhm 952i 954i and 959i only A set of AC resistance standards of values 10 100mQ and 50m0 calibrated for use at 60Hz capable of being connected using a 4 wire co
115. drive in Vrms 5 lt NR3 gt Ramp Time in seconds 6 lt NR3 gt Dwell time in seconds lt EMPTY gt Step is to be user terminated 7 lt STRING gt RMSV Checked value is RMS voltage drop Page 136 of 151 95x Series Operating Manual April 23 2015 INPHSV Checked value is In phase voltage drop QUADV Checked value is quadrature voltage drop RMSO Checked value is RMS impedance INPHSO Checked value is in phase impedance QUADO Checked value is quadrature impedance 8 lt NR3 gt Minimum Limit in V or Q 9 lt NR3 gt Maximum Limit in V or Q NONE No discharge if next step compatible 10 lt STRING gt FAST Fast discharge RAMP Discharge same as ramp ABORT Abort on failure CONT Continue on failure 11 lt STRING gt Example ADD GB 25 0 60 0 5 0 0 0 60 0 RMSO 0 0 0 1 FAST ABORT Configures the following in order A GB type test step 25A test current 60Hz test frequency 5V max open circuit voltage O second ramp time 60 second dwell time Check RMS impedance No minimum impedance 0 10 maximum impedance Fast discharge Abort test sequence if fails LOWQ CONFIGURATION FIELDS Field Field Format Value 1 lt STRING gt LOWOHM 1 or Y Test using 2 wire mode 2 sere 0 or N Test using 4 wire mode 7 lt NR3 gt Test time in seconds lt EMPTY gt Step is to be user terminated 4 lt NR3 gt Check delay in seconds 5 lt NR3 gt Mini
116. ds used during verification must not be grounded Page 114 of 151 95x Series Operating Manual April 23 2015 The user can skip verification steps by simply not connecting a measurement device during that step and immediately continuing the step by pressing START again to proceed to the next EQUIPMENT REQUIRED 1 All except the 959i A measurement device capable of measuring DC voltages of 100V to 1000V 6000V 10000V and 14000V actual voltages depend on the model being verified having an input impedance of 10MO or greater and an accuracy which yields the desired error ratio to the 95x series accuracy see the DC Voltage Verification portion for the accuracies At voltages at or below 1000V there is a great range of products available which easily achieve very high ratios e g a bench top 6 digit DMM has a typical DC voltage accuracy of 0 005 producing more than a 50 1 error ratio At voltages above 1000V however there are a very limited amount of products available All models A source of DC currents in the range 1uA to 50mAdc capable of driving at least 1 5V compliance with an accuracy which yields the desired error ratio to the 95x series accuracy see the DC Current Scaling Verification portion for the accuracies This is achievable with most multi function calibration products e g Fluke All except the 956i and 959i A measurement device capable of measuring AC RMS voltages of 100V to 1900V 6000V or 10000V depen
117. e The example above shows the connections to a DUT to perform both a DC withstand test on the Line Neutral line power input and an AC Ground Bond or DC LowQ test on the chassis of the DUT in the same sequence If wired in this manner then no changes in connections are needed This will increase the capacitive coupling between the HV wire and the other wires which may need to be compensated for in highly sensitive applications The Continuity Sense feature may also be used with this wiring configuration _ TESTING A GROUNDED DUT OPTION HSS ONLY l In this case the user only need connect the HV terminal of the 95x to the point on the DUT which is to be tested It is expected that the DUT is grounded and that the breakdown and or leakage is being tested to ground For safety reasons or if unsure if the DUT is grounded it may be desirable to also connect the DUT ground to either the RETURN or GUARD terminals of the 95x however the user should ensure that the ground of the 95x and that of the DUT are within 5Vrms of each other otherwise excessive ground loop currents may flow potentially damaging the 95x CHECKING THAT THE DUT IS CONNECTED l When testing a DUT during DC Voltage Withstand testing there is the possibility that a disconnected DUT will erroneously pass a test There is always some amount of capacitance within the load which will always cause an amount of current to flow during ramp when properly connected so the user is recommended t
118. e 95x in three periods as follows 1 Pre switch Period During this period the 95x checks for the presence of each configured switch matrix unit and also delays for at least the user set pre switch delay period If a configured switch matrix unit fails to be detected then the sequence is aborted As soon as all units have been detected and the minimum delay has expired the switch command period is started Switch Command Period During this period all configured switch matrix units have their relays commanded into the user set states As soon as this is completed the post switch period is started Post switch Period The 95x stays in this period until the user set post switch delay has expired This period allows for relay and wiring settling after changing the relay states As soon as the delay has expired the next test step in the test sequence is started CONFIGURING An example SWITCH type menu is as follows Seq 1 Step 1 SWITCH PRE DELAY 0 00sec POST DELAY 0 25sec 1 0000000000000000 PRE DELAY Allows the pre switch delay to be specified Generally this should be set to zero but may need to be extended if external circumstances require a delay between the preceding step and the relays being changed in this step POST DELAY Allows the post switch delay to be specified When controlling a VITREK 948 this should be set to a minimum of 0 20sec for a VITREK 964 this can be set to zero if there are negligible wiring settlin
119. e Current 0 00uUA to 50mA 7 25msec measurement period 100ms for dwell time gt 2 sec lt 1 50nA 10nA per KV accuracy Capacitive Loading Effects Add X 0 2nA 2 5nA per KV X C 0 01uF below 0 01uF or X v C 1uF above 1uF or otherwise X 1 0 Cable Compensation lt 1 of error RESISTANCE MEASUREMENTS DUT GROUNDED OPTION HSS ONLY l Measurements are performed between the HV terminal of the 95x and ground For applied voltage breakdown current and arc current accuracies see above In the chart below R is the reading in Ohms C is the capacitive loading Interpolate between voltages as needed for accuracies at capacitances above 5uF consult ViTREK Page 68 of 151 95x Series Operating Manual April 23 2015 Test Fixed Discharge Controlled Discharge Minimum Discharge Time C lt 0 01uF C 0 01uF to 1uF C 1uF to 5uF Voltage 50V 10K 300MA 10K 300MQ 10K 300MQ 1 5 R 10M0 1 5 R 10MQ 1 5 R 10MQ 100V 10K 600MA 10K 600MQ 10K 600MQ 1 4 R 20MQ 1 4 R 19MOQ 1 4 R 18MQ 10K 1 5GQ 10K 1 4GQ c f O tl TOK A MAIS 1 3 R 45MQO 1 3 R 40MQ 10K 2 75GQ 10K 2 6GQ E f O 309V ORI OME 1 3 R 80MQ 0 6 R 80MQ 1000V 20K 5GO 1 3 R 160MQ 20K 5GO 1 3 R 150MQ is z a z 1 3 R 130MQ 2500V 50K 11GQ 1 3 R 300MQ 50K 9GO 1 3 R 250MQ 50K 8GQ 1 3 R 240MQ 4000V 80K 14 5
120. e Fields for details regarding the response Page 145 of 151 95x Series Operating Manual April 23 2015 PROGRAMMING GUIDELINES AVOID INTERFACE SPECIFIC METHODS l The 95x can be interfaced to with RS232 GPIB or Ethernet interfaces It is recommended that the programmer not use interface specific methods e g serial polling over GPIB to ease the migration between interfaces at a later date Similarly it is recommended to always terminate commands with either the lt CR gt or lt LF gt characters or both rather than using the GPIB specific EOI or GET methods The command set and response formats are identical between interfaces so migration between interfaces is simple if this guideline is followed START BY INITIALIZING THE 95X When a user application is started on the controlling computer the status of the 95x is unknown it may have a response waiting to be read it may have a partial command in its input buffer It is recommended that the user always perform an interface clear when the application is started to ensure that there are no pending or partially programmed activities in the 95x This can be achieved by sending the RST command EMPLOY A TIMEOUT ON ALL ACTIVITIES On all interfaces the 95x has full handshake capabilities so both commands and responses can be held up for short periods of time The user must employ timeouts for both transmit and receive operations and take any desired corrective action should a timeou
121. e a failure of the 95x then the self test is halted at the failing test e When all tests have successfully completed a temporary message is displayed and the display is returned to the base menu state Page 109 of 151 95x Series Operating Manual April 23 2015 SECTION 10 PERFORMANCE VERIFICATION AND ADJUSTMENT The 95x has been designed to give many years of service without needing calibration However particularly for devices used to test for product safety it is important to periodically ensure that the device is properly working within its specifications There are three strategies recommended for periodic performance verification adjustment of the 95x Which one is selected by the user depends on the users specific requirements regarding quality level and the availability of equipment e Periodic Adjustment Calibration Only This is the simplest of the strategies while it gives the typical user a reasonable degree of certainty that the 95x is performing to its specifications it does not cross check that the calibration technique was performed correctly and does not account for some rare possible malfunctions in the 95x e Periodic Adjustment followed by Verification With this strategy the user ensures that the 95x was within specification as received by performing the adjustment calibration and checking that the adjustments are within the product specification then checking that the calibration was correctly performed
122. e breakdown is generated by the capacitor itself so there can be no limit on this energy imposed by the 95x WARNING SOME 95x MODELS PRODUCES CURRENTS OF UP TO 40Arms ON THE SOURCE AND TERMINALS THE USER MUST ENSURE THAT CONNECTIONS TO THESE TERMINALS HAVE A SUFFICIENT CURRENT CARRYING RATING The current rating of all wiring must be sufficient for at least the highest current expected from that terminal during the test sequence Generally all wiring should be rated for at least 100mA but the SOURCE and SOURCE terminal wiring for a 952i 954i or 959i performing Ground Bond testing should be rated for the highest set test current this may be up to 40A USER ACTIVATED SAFETY ABORT e The user may depress the STOP button on the 95x front panel at any time while a test sequence is being run to remove the voltage or current as quickly as possible and abort the test sequence e The user can configure for a digital INTERLOCK signal to be input to the DIO Interface which will abort a high voltage or current test step if the interlock is opened See SECTION 8 DIO INTERFACE e The user can configure for a digital ABORT signal to be input to the DIO Interface which will abort any type of test step if asserted See Page 16 of 151 95x Series Operating Manual April 23 2015 e section 8 Dio INTERFACE e There are several interface commands which can be used to abort a running test sequence See SECTION 11 PROGRAMMING VIA AN I
123. e capacitance of the wiring between the 95x and the DUT All of these tests are accomplished by two ACW test steps in a test sequence Page 52 of 151 95x Series Operating Manual April 23 2015 Firstly test the lower voltage resistance and capacitance leakage seg 1 Step 1 ACW Different breakdown and leakage limits needed so use ACW LEVEL 500 0V 60 0Hz As required BREAKDOWN 5 000mApk Since the DUT is known to have little leakage this could be set lower RAMP 0 02sec No timing requirement so set for fast testing DWELL 0 10sec No timing requirement so set for fast testing Test 1 INPHS Test the resistive leakage Lim 100 0M no maxQ As required Test 2 QUAD Test the capacitive leakage Lim 26 50M no maxQ 26 5Mohm 1 2mFC the impedance of 100pF at 60Hz ARC DETECT 4us 10mA Optional DISCHARGE NONE No need to discharge between this and the next step ON FAIL ABORT SEQ No further test steps if this step fails Secondly test the high voltage withstand capability Seq 1 Step 2 ACW Could use ACez if arc detection not needed LEVEL 2000 0V 60 0Hz As required BREAKDOWN 5 000mApk Since the DUT is known to have little leakage this could be set lower RAMP 1 00sec As required DWELL 1 00sec As required Test 1 NONE No leakage testing required Test 2 NONE No leakage testing required ARC DETECT 4us 10mA Optional DISCHARGE FAST Immediately discharge as this is the last step ON FAIL ABORT SEQ Example 3 A 0 033uF 1000Vac capacitor i
124. e errors in the measurement results If the wires are longer than a few feet and or are tightly coupled then these errors can be 10 s of milliohms at 60Hz and significantly more at 400Hz particularly when high test currents are being used This effect is not specific to the 95x it applies to any high current low impedance AC measurement When making very low level measurements or when using long lengths of wiring the user is recommended to couple e g use a twisted pair the SOURCE wires together and or couple the SENSE wires together for at least the majority of the wire length Alternatively if the user maintains at least a 3 4 spacing between each wire and all other wires then these effects are also reduced Similarly there will be some inductive coupling between the DUT and the SENSE wires if they are not separated from the DUT sufficiently to reduce this the SENSE wires should not rest on or close to the DUT but should be routed nominally 90 away from the DUT for at least several inches The coupling effects described above will almost always yield a higher than expected measurement If the users test passes with the measurement within the allowable range of impedances then even if these are not accounted for the DUT is guaranteed to have passed the test the above effects may only cause a false failure of the test Use caution when handling the connections to the DUT after performing a test If high currents are being use
125. e front panel and if any rear panel terminals then press START e The 95x now performs a series of internal adjustments which require no user equipment or intervention e When the internal adjustments have completed the display prompts the user to provide a short between the SENSE and SENSE terminals This is equipment 1 listed above NOTE this short circuit must have less than 5uV of thermally induced voltage the user may need to wait for some time after making connections Ensure that the short circuit is properly inserted into the terminals and then press START to continue the procedure e The 95x now automatically performs both a voltage zero and a 2 wire resistance zero adjustment When the 95x has completed its 2 wire zero adjustments the user is prompted to provide a 4 wire zero This is equipment 2 listed above NOTE this short circuit must have less than 5uV of thermally induced voltage the user may need to wait for some time after making connections Ensure that the short circuit is properly inserted into the terminals and then press START to continue the procedure e The 95x now automatically performs a 4 wire resistance zero adjustment When the 95x has completed its 4 wire zero adjustments the user is prompted to remove the 4 wire short circuit When it has been removed press START to continue the procedure e The user is now prompted to provide a source of 1000Vdc equipment 3 listed above between the HV and GND GUA
126. e of testing follow the requirement e Ifthe load is capacitive gt 0 1uF use DC Voltage Withstand Testing e ifthe load has power dissipation requirements which preclude DC or AC testing use Pulse Voltage Withstand Testing e If the load is highly non linear so cannot withstand AC voltages use DC Voltage Withstand Testing e Otherwise choose either AC or DC Voltage Withstand Testing CHOOSING THE LIMITS The 95x monitors three different types of DUT current breakdown leakage and arc current Detailed descriptions of these currents are given later in this section Because the 95x monitors these currents in different ways and can enforce different limits on each in the same test it can be set to differentiate between a DUT which exhibits any of the following e Meets all requirements e Has excessive leakage but withstands the applied voltage without breaking down e Breaks down when the voltage is applied e Exhibits arcing with any of the above See the detailed description below for setting or disabling arc limits which are optionally enforced throughout the step If only arc detection is required the user must still set a breakdown limit Page 43 of 151 95x Series Operating Manual April 23 2015 The breakdown limit is always enforced throughout the step Leakage limits are only enforced during the dwell period of the step When performing DC Voltage Withstand Testing this allows the user to set different l
127. e sequence are contained in the respective sections of this manual for each type of test step NOTE certain test step types are not suitable for lead compensation see the respective sections of this manual for each type of test step for details To perform a lead compensation on a test sequence perform the following e Ensure that the display indicates that the 95x is in the base menu state i e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base menu state e Press the SELECT key e The display shows the last used test sequence number and the name associated with that test sequence An example is SELECT TEST SEQUENCE 2 95x LINE HYPOT e As needed change the test sequence number to select the desired test sequence by using the Up Arrow or Down Arrow keys or using the numeric keys and then press the ENTER key The selected test sequence is now made ready to be run e Press the LEADS key The display now shows the test sequence is ready to be run in lead compensation mode and the READY indicator flashes e Ensure that the wiring is suitable for lead compensation See the respective sections of this manual for each type of test step in the selected test sequence for details e Press the START switch on the front panel While the sequence is running the TESTING indicator flashes and the selected test sequence is performed in the lead compensation mode o Any pre exi
128. e that the display indicates that the 95x is in the base menu state i e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base menu state Press the CNFG key The display now shows the main configuration menu an example of which is TEST PRINTOUT SYSTEM INTERFACES DIGITAL I O BUILD SET TO DEFAULTS LOCK PASSWORD 000000 RELOCK Using the Left Arrow or Right Arrow keys as needed change the selection point to the TEST line Press the ENTER key The display now shows the test configuration menu An example of the test configuration menu is as follows START BEEP MED PASS BEEP MED FAIL BEEPS LOUD ARC FAIL ON DETECT CONTINUITY SENSE OFF FAST RERUN ENABLED USER MAX DCV 10 0KV USER MAX ACV 10 0KV HI SAFETY ENABLED MIN LOAD ENABLED MAX DISCHARGE 200mA The user may navigate this sub menu and change the displayed settings as required o START BEEP This allows the user to set the volume of the beep sound emitted by the 95x when a test sequence is started o PASS BEEP This allows the user to set the volume of the beep sound emitted by the 95x when a test sequence is completed with a PASS status o FAILBEEP This allows the user to set the volume of the beep sounds emitted by the 95x when a test sequence is completed with a FAIL status o ARC This allows the user to select whether all test steps configured for arc detection
129. e this connector is securely fastened to the rear panel connector on the 95x if this should become disconnected while performing a test extremely high voltages can exist on the output of the external transformer unit e A power line cord type cable terminated in three separate connections o Aspade lug This must be securely connected to the Ground terminal located above the power connector on the rear panel of the 95x o A pair of shrouded banana plugs These must be connected to the safety banana sockets marked EXT DRIVE on the rear panel of the 95x There is no polarity requirement regarding these connections Page 20 of 151 95x Series Operating Manual April 23 2015 SECTION 4 GENERAL FRONT PANEL OPERATION This section gives general information regarding using the front panel and its menus FRONT PANEL i 1 The display This shows all menus during interactive data entries all measurements during a test and the present date time when not performing any other duties 2 The POWER switch This turns on off the power to the 95x 3 The START and STOP buttons a The START button allows the user to start performing a previous selected test sequence or while running a test sequence select to continue a test step when it is waiting for the user to do so b The STOP button aborts any test sequence in progress while running a test sequence aborts the menu activity in progress discarding any changes made
130. each command There are two types of fields in a command 1 COMMAND KEYWORD Although all command keywords are shown using uppercase characters in this document lowercase characters may also be used if desired Command keywords must exactly match the defined set for the 95x The first field in a command is always the command keyword some commands have a second command keyword in the second field 2 DATA There are several types of data the type used is dependent on the field a lt EMPTY gt This is a field containing no or only whitespace characters between the enclosing separators In many commands the user may give an empty field where another format is expected this generally has a specific effect defined in the description for each command b lt BOOL gt This can be the single character Y or 1 denoting a true state or the single character N or 0 denoting the false state the Y or N may be upper or lower case c lt NR1 gt One of three methods may be used to define a lt NR1 gt field i Decimal value A string of numeric 0 through 9 characters defining a decimal number without polarity or decimal point e g 123 defines the decimal number one hundred and twenty three A value greater than 4294967295 is a syntax error ii Hexadecimal value The user can optionally start this field with the characters OX or the single character X in both cases the X character can also be low
131. earby objects and corona can occur even outside of the insulation This is made worse by sharp corners on objects or the wiring In severe cases corona can cause interference with the Page 15 of 151 95x Series Operating Manual April 23 2015 measurements of the 95x and will reduce the capabilities of the wiring insulation over time eventually resulting in insulation failure When using extremely high voltages especially when using Opt AC 30 there may be significant mechanical force between the HV wiring and nearby objects Loose wiring can move several inches and nearby loose objects e g screws or papers can be attracted to the high voltage wire All terminals of the 95x other than the HV terminal are always protected to be within a safe voltage of the 95x chassis ground so high voltage wire is generally unnecessary for connections to them Should the DUT exhibit significant breakdown or arcing while being tested there may be very high energy HF interference generated Although this only lasts for a small period of time before the 95x shuts down in severe cases this can damage nearby equipment such as computers The wiring between the 95x terminals and the DUT should be routed as far as possible away from other equipment and from all cabling connected to other equipment When charging high capacitance loads to high DC voltages the capacitor may be unsafe if it or the wiring to it exhibits breakdown while being tested The energy in th
132. eded for any system from the simple just the 95x to the most complex with the 95x terminals being multiplexed between DUTs and or points within DUTs by up to 1024 channels in switch matrix units also available from ViTREK e High Speed The 95x is capable of performing very quickly up to 100 tests per second can be performed with the test results being made available both during each test and after the entire sequence has been run The 95x is also capable of chaining similar tests without needing to reduce the applied voltage or current to zero between test steps this considerably speeds up testing when multiple test levels are required e All of the measurements all of the time The 95x does not just measure what the user has set limits for all measurement results for the specific type of test being performed are made available to the user e Energy Efficient The 95x uses direct line switching power supplies to provide a very energy efficient instrument the 95x only draws significant power from the line when needed to power the load AVAILABLE MODELS AND OPTIONS AC Voltage Testing DC Voltage Testing AC Low Resistance Testing 951i No 951i 952i sb208ay dd 0 1 40A 8V 952i 953i No 953i 954i 40 11000V 0 1 40A 8V 954i 955i 40 10000V No 955i 956i No 20 6500V No 956i 20 6000V No A 957 49 10000V Opt AC10 nee 0 1 40A Opt GB40 P 959i No No 0 1 40A 8V 959i In additio
133. edure This discards any changes which have been made during the procedure DO NOT REMOVE POWER FROM THE 95x DURING THE ADJUSTMENT CALIBRATION PROCEDURE If a failure occurs during the procedure the 95x will automatically halt the procedure and discard any changes made In several steps the 95x display prompts the user to make connection to the GND terminal this is also denoted as the GUARD terminal on the 95x front panel The front panel High Voltage warning light is illuminated whenever there are high voltages or currents present on the 95x terminals When illuminated the user should not touch the connections to the 95x EQUIPMENT REQUIRED 1 All models A shorting plug suitable for use between the SENSE and SENSE terminals This must have a resistance of less than 5mQ at a nominal 30mAdc current for a 4 1 accuracy ratio the 95x specification is 20mQ All models A true 4 wire short circuit having a 4 terminal resistance of less than 0 5mQ at a nominal 30mAdc current for a 4 1 accuracy ratio the 95x specification is 2m0 and 952i 4i 9i only an impedance of less than 1 625uQ at 5Arms 60Hz current for a 4 1 accuracy ratio the 952i 4i 9i specification is 6 5uQ All models except the 959i A source of 100Vdc 500Vdc and 1000Vdc capable of driving a 100MQ load with an accuracy of better than 0 075 for a 4 1 accuracy ratio the 95x specification is 0 3 All models A source of 100uA 1mA 10mA and 50mAdc capable of driving at least
134. ense uses the SENSE terminals ensure that the resistor is connected with the terminals and terminals correctly paired for a 4 wire measurement When the 100 resistance is correctly applied press START to continue the procedure The user is now shown the difference in calibration at 100 between this calibration and the last calibration of the 95x If the change is acceptable then press START to accept it and continue the procedure otherwise abort the calibration by pressing STOP NOTE the 95x specification at this level is 0 8 The 95x display will show FAILED if the calibration is out of range for calibration not if the change is beyond the specification e The user is now prompted to connect a 4 wire 10 impedance equipment 7 listed above to the 95x terminals The 95x internal current source is from the SOURCE terminals and the voltage sense uses the SENSE terminals ensure that the resistor is connected with the terminals and terminals correctly paired for a 4 wire measurement The use of short leads is recommended and steps should be taken to reduce the potential for coupling between the SOURCE and SENSE wires Ideally the SOURCE wires should be a twisted pair and the SENSE wires a separate twisted pair spaced away from the SOURCE pair When the 10 impedance is correctly applied press START to continue the procedure e The user is now prompted for the actual calibrated value of the 10 The user should enter the correct value usi
135. equence Aborts a test sequence when active This signal has priority over the Pin 2 HV PRESENT Output Pin 3 COMMON Fin ABORT Input START signal disabling it while ABORT is active Pin 6 INTERLOCK Input Aborts a test sequence high voltage or current steps only when inactive Initiates a Test Results Printout Pin 7 PRINT Input Note as of v2 02 firmware this capability has not been implemented in the 95x Pin8 SEQUENCE 1 Pin 9 SEQUENCE 2 These signals are only used at the instant of the START signals transition Input which starts a sequence they are ignored at all other times Sequence Pin 10 SEQUENCE 4 O through 15 is selected and run according to the state of these signals Pin 11 SEQUENCE 8 Pin 12 PASS Output Active after the end of a sequence if passed Pin 13 FAIL Output Active after the end of a sequence if failed Pin 14 TESTING Output Active while running a sequence Pin 15 DWELL Output Active during the dwell period of a measurement type of test CONFIGURING The DIO interface may be configured from the front panel by using the DIGITAL I O sub menu of the CNFG menu as follows e Ensure that the display indicates that the 95x is in the base menu state i e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base menu state e Press the CNFG key e The display now shows the main configurati
136. equence ABORT SEQ or only this step CONT SEQ if this step fails any of its checks A safety related failure or a user abort STOP button always aborts the entire sequence Page 49 of 151 95x Series Operating Manual April 23 2015 CONNECTING TO THE DUT See Terminals and Wiring for general wiring and safety recommendations The 95x requires that the DUT at least that portion which is being measured is isolated from ground unless e Option HSS is fitted e And the SOURCE setting is set to INT or AC 30 is not fitted e And the DUT GROUNDED setting is set to YES TESTING A DUT WITHOUT OPTION HSS OR WITH DUT GROUNDED SET TO NO l The DUT should be wired between the HV and RETURN terminals of the 95x if Opt AC 30 is being used SOURCE setting is set to EXT then the DUT should be wired between the output of the external AC 30 unit and the RETURN terminal of the 95x The 95x provides a safety ground for the DUT during the test via its RETURN terminal The Continuity Sense feature may be used to ensure that the RETURN connection is correctly made by connecting the SENSE terminal to a point on the DUT which is connected to the RETURN connection When deciding which point on the DUT to connect to the HV terminal and which point to connect to the RETURN terminal the user should consider that only the voltage on the RETURN terminal is safe at all times For best high impedance load performance there should be low capacitance and lea
137. er to program arc detection during this step Both the time and current level can be independently programmed ARC detection can also be disabled by setting the leftmost time setting to OFF o The 95x can be configured to not fail a test step when arcing is detected This is configured by the ARC setting in the CNFG TEST sub menu e ONFAIL This allows the user to program the 95x to abort the entire sequence ABORT SEQ or only this step CONT SEQ if this step fails any of its checks A safety related failure or a user abort STOP button always aborts the entire sequence CONNECTING TO THE DUT The 95x measures the current flowing into the RETURN terminal to the 95x ground during these tests The RETURN terminal of the 95x provides a safety ground to the DUT during these types NOTE since the 95x does not control the source of power to the DUT there is no automatic shutdown if an excessive current flows The 95x contains a low voltage lt 30V MOV type protection device from the RETURN terminal to its chassis ground if excessive current flows but the user should take additional measures to protect the system from high current flows in the event of a DUT failure 95x DUT The example above shows a typical DUT ground leakage connection between the DUT and the 95x The DUT line and neutral connections would normally be connected to a line and neutral line power source The 95x is used to check that the DUT does not have excessive gro
138. er would suffice Either the STEP or RUN Commands can be used the STEP command is recommended as it provides more information in the response If needed the user could also program MEASRSLT Command s to extract actual measurements during execution of the sequence If multiple measurement results are required during execution the user should send multiple MEASRSLT Commands as a set of commands the 95x responds with all of the measurement results as a single set in the same order as requested In this manner some interface time is saved and it is guaranteed that all of the measurement results are consistent in time with each other When using asynchronous timed polling the user should be careful as the OS may cause undesired operation o Ifthe user calls for an asynchronous timed event from the OS which is handled by the user code sending the query command s and fetching the response s then command overrun can occur if polling is too fast The 95x may slightly delay either the command or the response to beyond the time interval being used for polling also the OS itself may delay the transmission or reception In some OS s calls are made regardless of the completion of the preceding call so the second call will cause commands to be transmitted even though the responses from the first call have not been received yet The user should use some sort of software interlock to prevent this if needed o This issue does not occur if the user uses
139. ercase in which case the following data defines the number in hexadecimal format using the numeric characters and the letters A through F either upper or lowercase as an example 0x12 defines the decimal numeric value 18 A value greater than Oxffffffff is a syntax error iii Binary value The user can optionally start this field with the characters OB or the single character B in both cases the B character can also be lowercase in which case the following data defines the number in binary format using the O and 1 characters only with the most significant bit being defined first as an example 0b00010010 defines the decimal numeric value 18 or hexadecimal value 0x12 In all cases leading digits or bits which are not defined are assumed to be zero e g 0b00010010 is the same as 0b10010 A value greater than 32 bits is a syntax error d lt NR3 gt Thisisa string of characters defining a floating point numeric value optionally having a polarity and or a decimal point and or an exponent Within the limitations of the 95x command input buffer there is no limitation on the number of numeric characters before the decimal after the decimal or in the exponent There may be none or one polarity character and Page 121 of 151 95x Series Operating Manual April 23 2015 if present it must be the first character in the field If an exponent is required then it may be defined immediately following the mantissa
140. ering settings as needed See SECTION 6 TEST STEPS The user may add a test step to the end of the test sequence by pressing the Up Arrow key while the test step is selected until a NEW test step type is shown Note if the user accidently creates a NEW test step after the end of the sequence press the DEL key to delete it while it is being displayed The user may delete an existing test step by pressing the DEL key while the undesired test step is selected All higher numbered test steps are automatically renumbered The user cannot delete the only test step in a test sequence The user may insert a new test step by pressing the NEW key A new test step is inserted before the presently selected test step and all higher numbered test steps are automatically renumbered The user cannot insert an additional test step into a test sequence which already has all 254 test steps defined When no more changes are required press the EXIT key The 95x stores the test sequence and makes it ready to be run Page 34 of 151 95x Series Operating Manual April 23 2015 DELETING AN EXISTING TEST SEQUENCE CAUTION this operation cannot be undone ensure that the correct test sequence is selected before pressing the ENTER key e Ensure that the display indicates that the 95x is in the base menu state i e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base menu state e Press the DE
141. est current must be maintained below 5Vrms at all times to avoid corrosion breakthrough This is accomplished in a single step as follows Seq 1 Step 1 GB Require a voltage limit so use GB LEVEL 40 000A 60 0Hz As required V CLAMP 5 0V As required DWELL 30 0sec As required Test RMS As required Lim 0 0u 100 0m0 As required DISCHARGE FAST ON FAIL ABORT SEQ Example 3 It is required to test that a line filter inductor is within 10 of its 1mH nominal inductance and lt 10ma resistance at both 1A 60Hz and 10Arms 60Hz At 60Hz the reactance of 1mH is given by 2 1 F L 2 3 1416 60 0 0 001 0 376990 which is a voltage drop of nominally 3 7699V at 10A so is within the capabilities of the 95x It has been decided to only test the resistance at the 10A level as that test is the most demanding It is desired to perform all tests within less than 0 5 second to ensure production throughput This is accomplished in three steps as follows Seq 1 Step 1 GB Not testing RMS impedance so use GB LEVEL 1 000A 60 0Hz As required perform the 1A test of inductance first V CLAMP 8 0v Not needed so set to the maximum DWELL 0 1sec No timing requirement so perform a fast test Test QUAD Test the inductance Lim 339 3m 414 7m0 As required DISCHARGE NONE Don t discharge before the next test saves test time ON FAIL ABORT SEQ Seq 1 Step 2 GB Not testing RMS impedance so use GB LEVEL 10 000A 60 0Hz As required V CLAMP 8 0v Not
142. esult FULL The pass fail status reason for failure if any the level and frequency the full test step settings and the maximum minimum average and last measurements are printed for every test step o SERIAL If set to YES the 95x will prompt the user for entry of a serial when a test report is to be printed either manually or automatically The serial number can be any alpha numeric characters up to 12 characters can be included This is included in the test report If NO is selected then the user will not be prompted for the serial and it will not be included in the printed test report e When finished press the EXIT key to exit this sub menu and then press EXIT again if no additional configuring is to be performed to exit the main configuration menu and save the settings Page 40 of 151 95x Series Operating Manual April 23 2015 MANUALLY COMMANDING A TEST RESULTS REPORT When reviewing the results of a completed test sequence the user can manually command a test results report by pressing the PRINT key COMPENSATING FOR EXTERNAL LEAD LEAKAGE AND IMPEDANCE Most test sequences can be run in a special mode which saves the measurement results for each test step and will apply these saved measurements as offsets when the test sequence is subsequently run in a normal fashion in order to provide lead error compensation The details regarding the corrections available and the expected wiring for each test step within th
143. f the 95x for testing a DUT Device under Test uses test sequences Although this section is primarily written for the front panel user when programming the 95x via an interface the user should be conversant with the contents of this section A test sequence is a series of test steps which form a series of tests to perform on a DUT Each step in a sequence can be configured to be one of several types of activity including types for timing waiting for user interaction and controlling external switch units as well as types for performing a test on the DUT There are two types of test sequences which may be defined at the front panel e MANUAL test sequence sequence 0 o This always contains a single test step which may only be a step type which performs a test on the DUT o During testing the user is allowed to change the applied voltage current and or frequency as applicable for the specific step type being performed o This test sequence cannot be deleted it can only be overwritten e Standard test sequences sequence 1 through 99 inclusive o These may optionally have a name associated with each test sequence and each may contain up to 254 steps o All step types are available for use in this type of test sequence o While testing using these the user may not alter the voltages currents or frequencies being applied by the 95x o Certain step types are able to be chained the DUT does not need to be discharged between
144. for details regarding this o FP This shows the front panel firmware revision number o MEAS This shows the Measurement DSP firmware revision number installed in this 95x o DRIVE This shows the Output Drive DSP firmware revision number installed in this 95x o BASE UNIT This shows the base model number of this 95x Page 28 of 151 95x Series Operating Manual April 23 2015 o DCOPTION This shows if option NODC or DCNEG is installed in this 95x o AC2 OPTION This shows if option AC 2 is installed in this 95x o AC30 OPTION This shows if option AC 30 is installed in this 95x o 500VA OPTION This shows if option 500VA is installed in this 95x o PMT1 OPTION This shows if option PMT 1 is installed in this 95x o HSS OPTION This shows if option HSS is installed in this 95x o INTERFACE This shows if option UL 2 or GUL 3 is installed in this 95x o MAXDC This shows the factory limit on the maximum DC Voltage generated by this unit o MAXAC This shows the factory limit on the maximum AC Voltage generated by this unit o MAXGB This shows the factory limit on the maximum Ground Bond current generated by this unit o UPGRADE This allows the user to enter a factory supplied code to upgrade their instrument to enable additional options which were not enabled as originally purchased When finished reviewing the build information press the EXIT key to return to the main configuration menu and then press EXIT again if no add
145. g requirements 1 Allows the user to specify using a hexadecimal code the required relay states for switch matrix unit 1 If configured for more than one switch matrix unit there are further menu lines added for each additional switch matrix unit If configured for a VITREK 948 then this menu line has 14 characters for a ViTREK 964 it has 16 characters The hexadecimal code sets a binary code defining the required states of relays 64 through 1 for a 964 or 56 through 1 for a 948 in left to right order A 1 in this code indicates that the relay is to be in the ON state See the relevant switch matrix manual for further details regarding setting these codes The user should ensure that the state of any relay which is not actually fitted in the switch matrix unit is 0 Page 91 of 151 95x Series Operating Manual April 23 2015 NOTE the 95x does not change the states of switch matrix units unless commanded to do so by a SWITCH test step It is recommended to finish a test sequence using switch matrix units with a SWITCH type step setting the relays to best quiescent state for the users specific system generally the OFF state for all relays EXAMPLES Example 1 The user wishes to set a single VITREK 964 to engage ON relays 1 28 and 47 all other relays are to be disengaged OFF Since a ViTREK 964 is being used no delays are needed The 64 bit code for the required state is splitting the binary int
146. g each step the user should note the displayed current and record it checking against the 95x specification When the user is satisfied that the step has been completed the user should press START to continue or STOP to abort the sequence Current Level 95x Accuracy 0 25 0 25mA 0 25 0 025mA 1mA 0 25 2 5uA Page 116 of 151 95x Series Operating Manual April 23 2015 100uA 0 25 0 25uA 0 255 0 0255uA 1uA 0 3 3nA DC CURRENT ZERO VERIFICATION No connections to any terminals should be present during these steps The product prompts for the DC current zero to be verified at a zero output voltage level and at a SOOOV output level When prompted for each step the user should either e Press START to perform the verification e Press STOP to abort the entire sequence During each step the user should note the displayed current and record it checking against the 95x specification of 0 5nA When the user is satisfied that the step has been completed the user should press START to continue or STOP to abort the sequence AC VOLTAGE VERIFICATION The user should connect an AC Voltage measuring device equipment 3 in the list above to the HV terminal and the GND GUARD terminal of the 95x While the 95x prompts whether to verify the voltage there is no unsafe voltages present so the user may safely make connections and configure the measurement device as needed In some circumstances a differen
147. gnal or sending the interface CONT command CONFIGURING An example PAUSE type menu is as follows Page 92 of 151 95x Series Operating Manual April 23 2015 Seq 1 Step 1 PAUSE TIME 0 00sec e TIME Allows the user to set the desired pause time Any value between 0 00 and 9999 seconds may be entered An example HOLD type menu is as follows Seq 1 Step 1 HOLD TIMEOUT 30 0sec e TIMEOUT Allows the user to set the desired hold timeout Any value between 0 00 and 9999 seconds may be entered Setting a zero value disables the timeout entirely the 95x will wait forever for user interaction to occur EXAMPLES Example 1 The user wishes to program a 1 second pause into a test sequence to allow for wiring settling between two steps A PAUSE step is configured as Seg 1 Step 28 PAUSE TIME 1 00sec Example 2 The user wishes to program a step to have the sequence wait for user interaction before proceeding This will be used to allow the user to manually alter the DUT wiring It is desired to timeout the sequence if the user does not respond within 1 minute A HOLD step is configured as Seg 1 Step 28 HOLD TIME 60 0sec SPECIFICATIONS Delay or Timeout 0 00 to 9999sec lt 0 05 20ms accuracy Page 93 of 151 95x Series Operating Manual April 23 2015 SECTION 7 CONNECTING AND CONFIGURING INTERFACES The 95x contains several interfaces some of which are options This section
148. gnificant capacitance this is easily achieved by adding a low voltage AC test at the start of the sequence Since the load has a minimum capacitance of 1uF and a maximum of 4uF the current at 10V 20Hz will be between 1 25 and 5mArms This requires that Opt AC 2 is installed This is accomplished in three steps as follows Seq 1 Step 1 ACez LEVEL 10 0V 20 0Hz RAMP 0 02sec DWELL 0 10sec Lim 1 000m 5 000mA ON FAIL ABORT SEQ Seq 1 Step 2 DCIR LEVEL 500 0v BREAKDOWN 5 000mApk RAMP 1 00sec DWELL 5 00sec Delay 2 00sec End On FAIL Lim 100 0M no maxQ ARC DETECT OFF DISCHARGE NONE ON FAIL ABORT SEQ Seq 1 Step 3 DCW LEVEL 2500 0v BREAKDOWN 20 00mApk RAMP 1 00sec DWELL 5 00sec Simple RMS min and breakdown so use ACez As required Use a fast time to reduce test time Use a fast time to reduce test time As required No need for further tests if fails This could also be a DCW test with the same results As required Must be greater than the charging current As required As required Allow for dielectric storage in the panel As required As required As required No need to discharge before the next step reduces test time Optional could continue testing if fails Different breakdown and leakage limits so use DCW As required Must be greater than the charging current As required As required Page 65 of 151 95x Series Operating Manual April 23 2015 Delay 1 00sec Allow for dielectric storage
149. gs as required The settings are o USE DHCP Allows the user to configure the 95x to use DHCP for IP address allocation YES or not NO o IP If using DHCP this shows the IP address which the 95x has been allocated If not using DHCP this allows the user to enter an IP address for the 95x on the local network o SNET If using DHCP this shows the IP subnet mask which the 95x has been given If not using DHCP this allows the user to enter the subnet mask for the local network o GTWY If using DHCP this shows the IP of the gateway to additional networks which the 95x has been given If not using DHCP this allows the user to enter the IP address of the gateway o MAC This is not editable and shows the MAC address of the 95x This may be needed to configure the local network to allow connection of the 95x to it In most networks this is not needed Page 99 of 151 95x Series Operating Manual April 23 2015 e When finished press the EXIT key to exit this sub menu and then press EXIT again if no additional configuring is to be performed to exit the main configuration menu and save the settings NOTE the settings are not active until all menus have been exited e Ifusing DHCP the user should re enter the ETHERNET configuration sub menu and note the IP address allocated to the 95x This will be needed to configure the TCP IP client software used to communicate with the 95x CONNECTIONS The 95x connects to the local network
150. he following e The 95x should be fully powered and turned on for at least 10 minutes 1 hour is recommended prior to being calibrated Initially there should be no connections to any of the 95x terminals and it is recommended to not have any connections to the interface ports during the procedure e In many cases the same accuracy determining circuitry is used in several different modes of operation As an example there is no difference between the DC and AC voltage modes of operation in the accuracy determining circuitry of the 95x Because of this the entire product can be calibrated with complete certainty by only a few fairly simple calibrations Page 110 of 151 95x Series Operating Manual April 23 2015 The combination of the adjustment calibration and the internal self test ensures the performance of the 95x in all but the most unusual of circumstances Even if a formal calibration verification procedure is not performed the user can have a very high degree of certainty that the 95x is performing to its capabilities The adjustment calibration procedure has been designed to use widely available equipment such as the multi function calibrators available from Fluke No voltages over 1000V are needed during this procedure This document describes the equipment needed and provides details regarding the use of the 95x during this procedure it does not describe how to use that equipment The user can press the STOP button to abort the proc
151. his in some circumstances the STOP button may need to be pressed more than once Page 23 of 151 95x Series Operating Manual April 23 2015 NAVIGATING MENUS e The present selection point in a menu is denoted by the displayed information flashing between the information and solid blocks e The user can move the selection point in a menu by using the Left and or Right Arrow keys o The Right Arrow key moves the selection point further down the menu Moving the selection point past the last selectable item in a menu selects the first selectable item in the menu a double beep sound is made when this occurs o The Left Arrow key moves the selection point further up the menu Moving the selection point before the first selectable item in a menu selects the last selectable item in the menu a double beep sound is made when this occurs e Although the 95x display is limited to two lines most menus have more lines than this The display is automatically scrolled up and down the menu to display the menu line containing the present selection point e Notall menus or menu lines may be available o Generally items which are not pertinent to the specific model or option content of the 95x are not shown o All menus in the 95x utilize a top down priority Selections or entries made may affect subsequent entries in the menu Entries may be limited in allowable values or may not be shown e Ifa menu line is an entry into a sub me
152. hows the date and time If necessary press the STOP button to abort a menu and return to the base menu state e Press the CNFG key Page 98 of 151 95x Series Operating Manual April 23 2015 e The display now shows the main configuration menu an example of which is TEST PRINTOUT SYSTEM INTERFACES DIGITAL I O BUILD SET TO DEFAULTS LOCK PASSWORD 000000 RELOCK e Using the Left Arrow or Right Arrow keys as needed change the selection point to the INTERFACES line e Press the ENTER key e The 95x now displays the base interfaces configuration settings menu an example of which is RS232 BAUD 115200 SWITCH NONE DISABLE USB NO DISABLE GPIB NO DISABLE ENET NO ETHERNET GPIB ADDR 2 e The user may navigate this sub menu and change the displayed settings as required The settings affecting using the RS232 to control the 95x are o DISABLE ENET This must be set to NO to enable the Ethernet interface in the 95x o ETHERNET This selection is the entry point to the sub menu for configuring the Ethernet interface The user should navigate to select this menu line and press then ENTER key e The Ethernet sub menu allows the user to configure the 95x for the local network An example of this sub menu is as follows e USE DHCP YES IP 000 000 000 000 SNET 000 000 000 000 GTwY 000 000 000 000 MAC 1234567890AB e The user may navigate this sub menu and change the displayed settin
153. i and 957i Opt AC 10 50 to 10000Vrms reduce maximum voltage by 1V per Hz above 100Hz Opt HSS 20 to 4000Vrms Opt AC 2 10 to 2000Vrms reduce maximum voltage by 0 2V per Hz above 100Hz Page 54 of 151 95x Series Operating Manual April 23 2015 Opt AC 30 120 to 30000Vrms For line voltages below 115V linearly reduce the maximum test voltage by 1 V unless Opt LOLINE is fitted there is no reduction for Opt LOLINE Test Voltage Accuracy lt 0 5 1 5V 0 01 0 2V per mArms load 0 01 per Hz above 100Hz 955i and 957i Opt AC10 Add 0 1 above 7000Vrms Opt AC 30 lt 1 5 5V 0 05 1V per mArms load Test Voltage Overshoot lt 5 lt 0 5s ramp time lt 2 gt 0 5s ramp time Settling to lt 0 5 of final value in lt 0 1sec 2 cycles Test Voltage Waveform Sinewave 1 35 1 46 Crest Factor Test Frequency Range 951 4i and 957i 20 to 500Hz 955i and 957i Opt AC10 40 to 500Hz Opt AC 30 40 to 80Hz Test Frequency Accuracy lt 0 1 CURRENT MEASUREMENTS DUT ISOLATED l Measurements are performed in the RETURN terminal of the 95x Breakdown Current 1uA to 280mApk DC 50kHz bandwidth lt 1 1uA accuracy lt 30usec detection time lt 3msec response time typically lt SOOusec Leakage Current 0 0nA to 200mArms RMS In phase or Quadrature Greater of 1 cycle or 10ms measurement period RMS lt 0 5 10nA 0 15nA per kV Hz accuracy InPhs lt 0 5 10nA 0 01nA per
154. i l dss a sir 136 LoWO Contiguration B AE o EE E cananea niOna 137 AGCCAP Configuration Fields cir A a 138 Page 7 of 151 95x Series Operating Manual April 23 2015 ACI Configuration Fields cisse sasccccsatescivensassvensadstasvesssetancssanionesteutensoncdacs sontesacahdanbeasatevievsaduaevsasientershdeaieseieanbeyebens 139 DCi Configuration Fields sis lt ancccat coneetsssateessassdedscisanevacusdtcadssesbentsesadidseussnaesalabined snsntoedsnsedegaensaneeostabtegieasyavsaneiees 139 PULSE Configuration FIGlds vz cccecsscececcscnecensavdnccsacennceneeesceentveneuenchodenshenssevsecuagesacentecverthnvenchunnenttensanevenssonsebyanes 140 BRKDN Configuration Fields z csssccshessicsckaescascestecsaxneatencnenscsnshansdanceenes ecoaretinginasisaabasotau A aE EERDE aada 141 PAUSE Configuration Felisa E AR 141 HOLD Configuration FICS v 00 cssccss ces tet cvuientieavavsadesdeeaevcnsvecctectivecestasvcansananeds levieevhneb ies ik vastont E Eara Eia a ES 142 SWITCH 948i configuration Configuration Fields eccesecscecscecseeeseeeeeeeeeeeeeeeeceeeceaeceaeceaeceaecaaesaeesaeeeaeeeeeees 142 SWITCH 964i configuration Configuration Fields ccesecececscecseeeeeeeeeeeeeeeeeeeeeeeeceaeceaeceaecaaesaeecaeesaeeeaeeenetes 142 MESESTED Status Flaps cisicas cevidecssatecesneensccsavesente ae e e Nein vetveesiacdeaethsndeestuceaudessetesobestucnstwextutes 143 STEPRSLT Response Fields NN 144 Programming EXMP Ekiris iaieineea aa ssania aere
155. imits during the ramp i e charging and dwell periods of the step by using the breakdown and maximum leakage limits respectively A minimum leakage limit can be disabled by setting it to zero or an unlimited resistance A summary of the guidelines for setting breakdown and leakage limits is e If Pulse Voltage Withstand Testing set a breakdown limit no leakage limits are available e Ifthe user has both breakdown and maximum leakage limit requirements set them both according to the requirements ACez or DCez types cannot be used e ifthe user has no breakdown limit requirement only a leakage limit set the maximum leakage limit according to the requirement and set the breakdown limit significantly higher than this but low enough to protect the DUT should it breakdown e Ifthe user wishes to detect breakdown by using the averaged leakage measurement set the maximum leakage limit according to the requirement use the RMS equivalent for the AC types and set the breakdown limit significantly higher than this but low enough to protect the DUT should it breakdown ACez or DCez types cannot be used e Otherwise o For the ACez or DCez types set the maximum leakage current limit according to the breakdown limit requirement use the RMS equivalent for the ACez type o Forall other types set the breakdown limit according to the requirement and either disable the leakage limits entirely only for the ACW type or
156. in field 13 NONE No discharge if next step compatible 15 lt STRING gt FAST Fast discharge RAMP Discharge same as ramp ABORT Abort on failure eee CONT Continue on failure lt EMPTY gt i 7 SMISSING gt OPtion AC 30 is not used may only be lt MISSING gt if field 18 is also lt MISSING gt 17 lt STRING gt INT Option AC 30 is not used EXT Option AC 30 is to be used valid if option AC 30 is fitted lt EMPTY gt j ig LSMISSING gt Load is not grounded lt STRING gt GND Load is grounded valid if option HSS is fitted ISO Load is not grounded Page 132 of 151 95x Series Operating Manual April 23 2015 Example ADD ACW 1000 0 60 0 0 01 1 5 60 0 RMSA 0 0 0 005 NONE FAST ABORT Configures the following in order An ACW type test step 1000V test voltage 60Hz test frequency 10mApk breakdown limit 1 5 second ramp time 60 second dwell time 1 checked value is rms leakage current No minimum 1 leakage current limit 5mArms maximum 1 leakage current limit No 2 checked limit so following two fields are lt EMPTY gt No arc detection so following field is also lt EMPTY gt Fast discharge Abort test sequence if fails HV Terminal used AC 30 not used or not installed since both fields 17 and 18 are missing DUT is isolated since both fields 17 and 18 are missing DCEZ CONFIGURATION FIELDS Field Field Format MENE
157. in one of two ways either a an upper or lowercase E character followed by an optional exponent polarity character or followed by the integer exponent in lt NR1 gt format or b a single character case sensitive explicitly defining the exponent which may be one of the characters T 12 G 9 M 6 K 3 k 3 m 3 u 6 n 9 or p 12 Examples include vi vii 12 Defines the floating point value 12 0 A lt NR1 gt syntax numeric can always be used to define a lt NR3 gt value 12 Defines the floating point value 12 0 1 2345 Defines the floating point value 1 2345 12 45e 1 Defines the floating point value 124 5 12 45e 01 Defines the floating point value 124 5 12 45e1 Defines the floating point value 124 5 12 345K Defines the floating point value 12345 0 e lt STRING gt This can be any combination of printable ASCII characters including whitespace characters To include a separator character in a lt STRING gt the user must immediately precede the character with the character Any character immediately following a character is taken literally and included in the lt STRING gt and the character is discarded FIELD SEPARATOR Fields are separated by the comma character COMMAND SEPARATOR Commands are separated by the semi colon character COMMAND TERMINATOR A command or set of commands is terminated
158. in the CNFG TEST sub menu to DETECT ONLY e DISCHARGE Not available for the DCez type Allows the user to program whether the discharge period should use the same timing as the ramp period AS RAMP be as fast as possible FAST or skipped NONE If NONE is selected but the next step is not of a DCez DCW or DCIR type then the FAST selection is used when the sequence is run o Ifa load has significant resistance in series with capacitance then ensure that the discharging current is within the capability of the series resistance to avoid it being damaged If necessary reduce the maximum discharging current by reducing the CNFG TEST MAX DISCHARGE setting e ON FAIL Allows the user to program the 95x to abort the entire sequence ABORT SEQ or only this step CONT SEQ if this step fails any of its checks A safety related failure or a user abort STOP button always aborts the entire sequence PERFORMING A MULTI STAGE RAMP OR MULTIPLE VOLTAGE TESTS The 95x allows the user to skip the discharge phase if desired in DCW and DCIR types If a step has DISCHARGE set to NONE and the next step is also a DC Voltage Withstand type and is at a higher voltage than the preceding step then the discharge phase is skipped automatically This enables the user to perform a multi stage ramp with optional dwell phases between each ramp stage If each step in such a series has non zero dwell times then their leakage currents tests are performed norma
159. ing completion of the test sequence FAIL This is illuminated whenever a test sequence is failing while running a test sequence or the previously run test sequence has failed any test steps following completion of the test sequence TESTING This is illuminated when the 95x is running a test sequence READY This is illuminated after the user has selected a test sequence to run and the 95x is ready to perform that test sequence ARC This is illuminated whenever the 95x is detecting an arc current while running a test sequence and the specific test step is enabled to detect arc current C V LIMITED This is illuminated when the 95x output is either current or voltage limited by the load while running a test sequence This is only used in certain types of test steps REMOTE This is illuminated when the 95x is under the control of an interface i e RS232 Ethernet or GPIB If the user wishes to return to front panel control of the 95x the CNFG key should be pressed to achieve this 7 The menu keys These initiate a menu allowing the user to perform certain activities via the front panel of the 95x Many of these can be disabled by the user by requiring a password in order to utilize them a f SELECT Initiates a menu allowing the user to select a test sequence which has already been defined in the 95x This never requires a password EDIT Initiates a menu allowing the user to select an existing test sequence and then edit
160. ing the Up and Down Arrow keys o SET DATE This allows the user to adjust the presently displayed date The day month and year are separately adjusted using the Up and Down Arrow keys When finished press the EXIT key to exit this sub menu and then press EXIT again if no additional configuring is to be performed to exit the main configuration menu and save the settings RETURNING ALL CONFIGURATION SETTINGS TO FACTORY DEFAULTS The user may return all configuration settings to the factory default settings as follows Ensure that the display indicates that the 95x is in the base menu state i e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base menu state Press the CNFG key The display now shows the main configuration menu an example of which is TEST PRINTOUT SYSTEM INTERFACES DIGITAL I O BUILD SET TO DEFAULTS LOCK PASSWORD 000000 RELOCK Using the Left Arrow or Right Arrow keys as needed change the selection point to the SET TO DEFAULTS line Press the ENTER key The 95x now displays a message temporarily and remains in the main configuration menu allowing the user to override the factory settings as needed If no further changes are needed press the EXIT key to save the changes and return to the base menu state Page 30 of 151 95x Series Operating Manual April 23 2015 SECTION 5 TEST SEQUENCES All usage o
161. ing the ability to charge the load in a timely manner then the user should consider using a multi stage ramp by using two or more steps The first step should be configured with a final voltage less than the desired final voltage and with a faster ramp rate and a higher breakdown setting than would have otherwise been possible in a single step because of the lower final voltage This first step should be configured with DISCHARGE set to NONE and a Osec dwell period The second step will be configured as required in all regards having the slower ramp rate associated with the lower possible breakdown current setting Page 61 of 151 95x Series Operating Manual April 23 2015 e Most materials have a higher dielectric storage effect when the ramp charging current is higher It may be desirable to perform a faster higher current ramp to a voltage lower than required in one step followed by a slower lower current ramp to the required final voltage to assist in reducing these effects CONNECTING TO THE DUT See Terminals and Wiring for general wiring and safety recommendations The 95x requires that the DUT at least that portion which is being measured is isolated from ground unless e Option HSS is fitted e And the DUT GROUNDED setting is set to YES TESTING A DUT WITHOUT OPTION HSS OR WITH DUT GROUNDED SET TO NO l The DUT should be wired between the HV and RETURN terminals of the 95x The 95x provides a safety ground for the DUT dur
162. ing the test via its RETURN terminal The Continuity Sense feature may be used to ensure that the RETURN connection is correctly made by connecting the SENSE terminal to a point on the DUT which is connected to the RETURN connection When deciding which point on the DUT to connect to the HV terminal and which point to connect to the RETURN terminal the user should consider that only the voltage on the RETURN terminal is safe at all times For best high impedance load performance there should be low leakage between the wires and for low level current measurements there should be little interference pickup in the RETURN wire In extreme circumstances the RETURN wire should be the inner wire of a coaxial cable with the shield connected to the GUARD terminal of the 95x This will significantly reduce the capacitance and leakage between the HV and RETURN wires A cable such as RG174 is a suitable choice If the Continuity Sense feature is being used then the SENSE connection should similarly be a coaxial cable 95x DUT High Voltage Wire Optional Wire for Continuity Sense The example above shows the connections for performing DC voltage withstand testing of Line Neutral connections to the chassis of a DUT The optional wire from the DUT chassis to the SENSE terminal of the 95x is used when the user wishes to use the Continuity Sense safety feature Page 62 of 151 95x Series Operating Manual April 23 2015 95x DUT High Voltage Wir
163. ion feature POLARITY Allows the polarity of the pulse to be selected o UNIPOLAR A single positive polarity pulse of voltage is produced o UNIPOLAR A single negative polarity pulse of voltage is produced Page 70 of 151 95x Series Operating Manual April 23 2015 o BIPOLAR A pair of opposite polarity pulses of voltage is produced e BREAKDOWN Allows breakdown detection to be programmed as a maximum peak current level Note that the maximum drive current during testing is limited by the test voltage and the 95x output impedance see Specifications entering a value higher than can be achieved renders this setting inactive e RAMP See figures in Actions While Running The minimum value is 1ms 0 5ms if Opt AC 2 if installed and the maximum value is 20ms e HOLD See figures in Actions While Running The minimum value is 1ms 0 5ms if Opt AC 2 if installed and the maximum value is 30ms e ARC DETECT Allows the user to program arc detection during this step Both the time and current level can be independently programmed Arc detection can also be disabled by setting the leftmost time setting to OFF The 95x can be configured to not fail a test step when arcing is detected by setting the ARC setting in the CNFG TEST sub menu to DETECT ONLY e ONFAIL This allows the user to program the 95x to abort the entire sequence ABORT SEQ or only this step CONT SEQ if this step fails any of its checks A safety relate
164. ipment listed here must not have grounded terminals Page 111 of 151 95x Series Operating Manual April 23 2015 PROCEDURE Follow the prompts in the display of the 95x for the actual procedure as it varies between models and option content e Press EXT e Press the UP arrow key to display ADJUST CAL on the lower display line and then press ENTER The 95x now prompts the user for entry of the calibration password o Ifthe user has not locked the calibration previously then there is no password in the 95x so the user may just press ENTER again to continue o Otherwise the user must enter the previously defined numeric password using the numeric keys on the front panel prior to pressing ENTER o Ifthe calibration has previously been locked by a password but it is no longer known to the user then please contact ViTREK for details regarding how to proceed e The user is now prompted to enter a new calibration lock password o If no change is required then press ENTER all zero digits is the selection for no password protection of calibration o Ifno password protection for calibration is desired but a password was previously defined the user should overwrite the password with all zero digits and then press ENTER o Ifthe password is to be changed then enter the new password using the numeric keys on the front panel and then press ENTER e The user is now prompted to remove all leads Ensure there are no connections to th
165. isplayed resistance measurement on the 95x display and record it checking against the 95x specification shown in the table below When the user is satisfied that the step has been completed the user should press START to continue or STOP to abort the sequence Resistance 95x Accuracy 100KQ 1 5 1 5KQ 0 8 0 08KQ GROUND BOND VERIFICATION This series of steps is only included in the 952i 954i and 959i models The user should connect the prompted value resistance standard equipment 7 in the equipment list above to the SENSE and SOURCE terminals of the 95x using a 4 wire connection method For all 4 wire connections the 95x internal current source is from the SOURCE terminals and the voltage sense uses the SENSE terminals ensure that the resistor is connected with the terminals and terminals correctly paired for a 4 wire measurement The user should also ensure that the cabling to the SOURCE terminals of the 95x is capable of handling the measurement current shown To reduce cross coupling between the SOURCE and SENSE wiring the user is recommended to use one twisted pair for the SOURCE connections and a separate twisted pair for the SENSE connections The table below shows the listing of the resistances requested for verification the measurement current levels and the 95x specification at each resistance value and current level When prompted for each step the user should either Page 118 of 151 95x Series Operating
166. it only valid for impedance 10 lt NR1 gt Time period for arc detection 4 10 15 20 30 or 40 lt EMPTY gt Arc detection disabled i lt NR1 gt Arc detection limit in mA lt EMPTY gt Only valid if arc detection disabled in field 10 NONE No discharge if next step compatible 12 lt STRING gt FAST Fast discharge RAMP Discharge same as ramp ABORT Abort on failure ees CONT Continue on failure ENR Min Load in Farads may be lt MISSING gt if field 15 is also lt MISSING gt EMPTY lt a Load is not grounded 15 lt MISSING gt lt STRING gt GND Load is grounded only valid if option HSS is fitted ISO Load is not grounded Example ADD DCW 1000 0 0 015 1 5 60 0 0 0 AMPS 0 0 25e 6 4 10 FAST ABORT Configures the following in order A DCW type test step 1000V test voltage 15mA breakdown limit 1 5 second ramp time 60 second dwell time O second delay Define leakage limits in Amps No minimum leakage current limit 25uA maximum leakage current limit Aus arc detection time 10mA arc detection limit Page 134 of 151 95x Series Operating Manual April 23 2015 Fast discharge Abort test sequence if fails Minimum load during ramp is set to O since both fields 14 and 15 are missing DUT is isolated since both fields 14 and 15 are missing DCIR CONFIGURATION FIELDS Field Field Fo
167. itiating any menu activity on the front panel always makes no test sequence ready to be run After an existing test sequence has been selected either by using the SELECT or EDIT menus the test may be run by e Press the START button The READY indicator is extinguished and the TESTING indicator is illuminated while the selected test sequence is run e While the test sequence is running the PASS and FAIL indicators show the present pass fail status after the first test step is sufficiently completed and throughout the test sequence the display shows the progress An example is 1 01d 1500v 60 0Hz 22s PASS 5 5nArms o The selected test sequence number and the present step are shown in the upper left display Following this the r character is shown during the ramp period or d during the dwell period of Page 35 of 151 95x Series Operating Manual April 23 2015 the test step being performed During the discharge period an informative message is displayed in the lower line of the display o For most types of test step the present output level and frequency are shown in the remainder of the upper display line If the MANUAL test sequence is being run the upper left shows MAN then either the level or the frequency can be selected and edited using the arrow keys start by pressing the Up Arrow key while selected or may be directly overwritten enter a new value using the numeric keys while it is selected o The time since the sta
168. itional configuring is to be performed to exit the main configuration menu SYSTEM CONFIGURATION SETTINGS There are several system configuration settings available which affect the overall operation These can be viewed or set as follows Ensure that the display indicates that the 95x is in the base menu state i e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base menu state Press the CNFG key The display now shows the main configuration menu an example of which is TEST PRINTOUT SYSTEM INTERFACES DIGITAL I O BUILD SET TO DEFAULTS LOCK PASSWORD 000000 RELOCK Using the Left Arrow or Right Arrow keys as needed change the selection point to the SYSTEM line Press the ENTER key The 95x now displays the system configuration settings menu an example of which is KEY BEEPS SOFT TIME FORMAT 12hr SET TIME 9 18 06am SET DATE 9 Feb 10 The user may navigate this sub menu and change the displayed settings as required Page 29 of 151 95x Series Operating Manual April 23 2015 o KEY BEEPS This allows the user to set the volume of the beep sounds made by the 95x whenever a key is pressed o TIME FORMAT This allows the user to select whether the 95x displays time in 12hour or 24hour format o SETTIME This allows the user to adjust the presently displayed time The hour minute and second are separately adjusted us
169. k com Page 10 of 151 95x Series Operating Manual April 23 2015 SECTION 1 PRODUCT INFORMATION FEATURES The 95x is an advanced Electrical Safety Analyzer with many standard features which make it unique in this field e Multiple Capabilities The 95x is capable of a very wide range of safety tests and is also capable of making specialty measurements on components all in the same instrument e Multiple Safety features The 95x has many built in safety features such as ground current detection DUT safety ground disconnection detection and more The standard digital interface allows the user to use safety interlocks and remote safety indicators with ease e Noregrets With all of the features shown here the 95x is capable of so much more than the typical users present requirements the user will not regret choosing the 95x when new more stringent requirements come up in the future e Wide range of voltages and currents generated The 95x has a test voltage range from a few 10 s of volts to several 10 s of kilovolts for withstand testing and a test current range from a few microamps to 10 s of amps for chassis ground bond testing at DC or over a frequency range from 20 to 500Hz The 95x is not limited to just a few voltages currents or frequencies the user can specify the actual level and frequency they desire The 95x is not weak either loads up to 500VA can be accommodated e Wide range of voltages and curre
170. kV Hz accuracy Quad lt 0 5 10nA 0 15nA per kV Hz accuracy Add 0 005 per Hz above 100Hz 955i and 957i Opt AC10 Add 50nA RMS InPhs and Quad above 7000Vrms lt 0 005 per Hz phase relative to test voltage InPhs Quad Arc Current 1 to 30mArms 50KHz 5MHz bandwidth lt 10 1mA accuracy at 1MHz 4us 10us 15us 20us 30us or 40us measurement period Cable Compensation lt 1 of error 0 01pF CURRENT MEASUREMENTS DUT GROUNDED OPTION HSS ONLY l Measurements are performed in the HV terminal of the 95x Breakdown Current 1uA to 50mApk DC 50kHz bandwidth lt 1 5 1uA accuracy lt 30usec detection time lt 3msec response time typically lt SOOusec Leakage Current 0 0nA to 35mArms RMS In phase or Quadrature Greater of 1 cycle or 10ms measurement period RMS or Quad lt 1 5 100nA 10nA per kV Hz accuracy InPhs lt 1 5 100nA 1nA per kV Hz accuracy Page 55 of 151 95x Series Operating Manual April 23 2015 Add 0 005 per Hz above 100Hz lt 0 005 per Hz phase relative to test voltage InPhs Quad Cable Compensation lt 1 of error 0 1pF CAPACITANCE AND DISSIPATION FACTOR MEASUREMENTS ACCAP TYPE l Capacitance Add Test Voltage Frequency and Quad Leakage Current Accuracies as percentages Examples at 1000V 60Hz with an isolated DUT 1pF 377nA 0 65 0 1 4 73 5 48 10pF 3 77uA 0 65 0 1 0 92 1 67 100pF 37 7uA 0 65 0 1
171. kage between the wires and for low level current measurements there should be little interference pickup in the RETURN wire In extreme circumstances the RETURN wire should be the inner wire of a coaxial cable with the shield connected to the GUARD terminal of the 95x This will significantly reduce the capacitance and leakage between the HV and RETURN wires A cable such as RG174 is a suitable choice If the Continuity Sense feature is being used then the SENSE connection should similarly be a coaxial cable 95x DUT High Voltage Wire SENSE RETURN Return Wire Optional Wire for Continuity Sense The example above shows the connections for performing AC voltage withstand testing of Line Neutral connections to the chassis of a DUT The optional wire from the DUT chassis to the SENSE terminal of the 95x is used when the user wishes to use the Continuity Sense safety feature Page 50 of 151 95x Series Operating Manual April 23 2015 95x DUT High Voltage Wire SENSE RETURN Low Voltage Wire a I High Current Wire The example above shows the connections to a DUT to perform both an AC withstand test on the Line Neutral line SOURCE power input and an AC Ground Bond or DC Low test on the chassis of the DUT in the same sequence If wired in this manner then no changes in connections are needed This will increase the capacitive coupling between the HV wire and the other wires which may need to
172. ll summary of the various types of activities available for each step After the table are individual sections giving full details for each of these activities The user only need be conversant with the section for each specific activity which the user intends to perform The levels shown for each model is those for the standard build option content may change the available levels and or frequencies Activity Required Pi 951i 952i 953i 954i 955i 956i 957i 959i 50V AC Voltage ACez 20V 6kV 20V 6kV 20V 6kV 20V 6kV 10kV 20V 6kV Withstand and ACW and 20 20 20 20 40 No 20 No Leakage Testing ACCAP 500Hz 500Hz 500Hz 500Hz 500Hz 500Hz rita F A aia a 20 20V 40V 40V 40V 20V 75V is 6 5kV 6 5kV 11kV 11kV 11kv 6 5kV 15kV Leakage Testing DCIR Pulsed Voltage Withstand 100V Testing Opt PULSE SOV 8kV 50V 8kV 50V 8kV 50V 8kV 10kV No 50V 8kV No PMT 1 only DC Voltage 20V 20V 40V 40V 40V 20V 75V Breakdown BRKDN No a x 6 5kV 6 5kV 11kV 11kV 11kV 6 5kV 15kV Device Testing e LowQ 1mQ to 1mQ to 1mQ to 1mO to 1ImQ to 1ImQ to 1mQ to 1ImQ to Testing 150KQ 150KQ 150KQ 150KQ 150KQ 150KQ 150KQ 150KQ 1uQ 100 1uQ 100 Opt 1uQ 100 ci Bond ie No 0 1 No 0 1 No No GB40 0 1 g 40A 40A only 40A Ground Leakage ACI and 0 1nA 0 1nA 0 1nA 0 1nA 0 1nA 0 1nA 0 1nA 0 1nA Testing DCI 200mA 200mA 200mA 200mA 200mA 200mA 200mA 200mA Watch Unit SWITCH Yes Yes Yes Yes Yes Yes Yes Yes Control Tes
173. lly however if the dwell time is set to zero in any but the final step then the dwell phase is also skipped in those steps and any dwell leakage current or resistance limits defined in such a step will be ignored and the ramp phase of the next step is immediately started after the end of the preceding stage ramp There are several scenarios where this capability assists the user for example e If itis desired to perform leakage measurements at several voltages but it is not desirable to discharge to zero between each voltage The user can configure several steps each with DISCHARGE set to NONE In this case there is no discharge phase between each step only for the final step or if a failure occurs e If itis desired to perform leakage current tests at timed intervals e g at 10 minute intervals then the user may configure many steps all set for the same voltage and leakage current limits and with DISCHARGE set to NONE The first step would be configured with the desired ramp settings all remaining steps are configured with the desired interval between leakage checks as the ramp time All steps should have a short but not zero dwell time configured during which the leakage current will be measured and checked against the limits Up to 255 such steps can be configured in this manner in a sequence e If ramping to a final voltage near the maximum ability of the 95x but the maximum current of the 95x at the final voltage is limit
174. load automatically The 95x does not have the load restrictions so often found and so often hidden in the small print in other safety analyzers load capacitances up to a farad during DC withstand testing highly inductive loads when low resistance testing and more are automatically accommodated by the 95x adapting itself to the actual load during each test Measurements on DUTs like solar panels and computer system line filters are made by the 95x with ease e Stand alone operation The 95x can be programmed by the user to perform up to 254 test steps in a sequence Each step is automatically performed by the 95x either with or without user intervention as the user desires Up to 100 such sequences can be defined and maintained in the instrument no Page 11 of 151 95x Series Operating Manual April 23 2015 computer is required The 95x is capable of controlling switch matrix units also available from ViTREK up to 256 channels can be controlled without needing a computer or software The 95x can even print a test report on a printer for you when a test sequence has completed e System operation Wide range of interfaces available If the user wishes to use the 95x with a computer then RS232 GPIB or Ethernet interfacing can be chosen as the interfacing medium between them Giving the user the flexibility to use the 95x in almost any computing environment Software QuickTest Pro is available from ViTREK to provide all the control ne
175. lue 00001000 set when a command is decoded with a field syntax or data range error e Bit4 decimal value 16 binary value 00010000 set when a command is decoded with a compatibility error e g this 95x variant is incapable of performing the requested operation Page 125 of 151 95x Series Operating Manual April 23 2015 Bit 5 decimal value 32 binary value 00100000 set when a query command is decoded but there is insufficient room in the output buffer for the response Bit 6 decimal value 64 binary value 01000000 set when the command buffer is overflowed Bit 7 decimal value 128 binary value 10000000 set when a command is received with a command word that is not known to the 95x or the command cannot be processed at this time ESR REGISTER This is separate within each interface This is an 8 bit register i e has values from O to 255 All of the bits in this register are cleared when read by the user Each bit is defined as follows Bit O decimal value 1 binary value 00000001 set when a command is decoded and an error occurred during decode Bit 1 decimal value 2 binary value 00000010 set when a query command is decoded but the response is too long for the response buffer Bit 2 decimal value 4 binary value 00000100 set when a test failure has been detected Bit 3 decimal value 8 binary value 00001000 set when the internal temperature of the 95x is above limits Bit 4 decimal
176. mands While running a test sequence Responds with a lt NR3 gt measurement result during execution of a test step lt STRING gt is FREQ frequency in Hz AMPS DC or RMS current in Amps INPHSA In phase current in Amps QUADA quadrature current in Amps VOLTS DC or RMS voltage in Volts INPHSV In phase voltage in Volts QUADV quadrature voltage in Volts OHMS DC or RMS impedance in Q INPHSO In phase impedance in Q QUADO quadrature impedance in Q ARC arc current in Amps BRKDN breakdown current in Amps CAP capacitance in F DF dissipation factor unitless Test Result Query Commands After running a test sequence Responds with a lt NR1 gt indicating the overall test sequence fail status and reason This is the logical OR of all individual step status flags This can also be used while running a test sequence See Test Step Status Flags Responds with a lt STRING gt indicating the pass fail state of each test step This can also be used while running a test sequence The response contains one character for each defined test step P passed F failed Not performed In process Responds with a set of fields giving the complete set of results for the STEP Ree dia specified test step See STEPRSLT Response Fields Configuration Settings Commands MEASRSLT lt STRING gt Page 128 of 151 95x Series Operating Manual April 23 2015 Command Description
177. mpedance selection the user may optionally disable the upper limit by pressing the LIMIT key while the upper limit is selected O Setting a zero minimum current limit disables the minimum limit and only applies the maximum limit The maximum allowed current limit or the minimum impedance limit is the maximum loading current which the specific 95x model and option content can continuously supply at the configured test voltage see Loading Capability Setting a zero minimum and maximum leakage currents for the DCW type disables leakage current testing entirely only the breakdown and optionally the arc current limits are used Setting a very small minimum leakage current or maximum leakage resistance limit to attempt to detect a disconnected DUT is not recommended the Min Load setting should be used instead For the DCez type the breakdown detection limit is automatically set to the maximum leakage current limit with a minimum of 1uApk e ARC DETECT Not available for the DCez type and not available if DUT GROUNDED is set to YES Allows the user to program arc detection during this step Both the time and current level can be independently programmed See Arc Current and Time for details Arc detection can also be disabled by setting the Page 60 of 151 95x Series Operating Manual April 23 2015 leftmost time setting to OFF The 95x can be configured to not fail a test step when arcing is detected by setting the ARC setting
178. mum Resistance Limit in Q 6 lt NR3 gt Maximum Resistance Limit in Q ABORT Abort on failure f oes CONT Continue on failure Example ADD LOWOHM 0 5 0 0 0 1 25 1 75 ABORT Page 137 of 151 95x Series Operating Manual April 23 2015 Configures the following in order A LowQ type test step Use 4 wire mode 5 second test time O second delay 1 250 minimum resistance 1 750 maximum resistance Abort test sequence if fails ACCAP CONFIGURATION FIELDS Field Field Format Value 1 lt STRING gt ACCAP 2 lt NR3 gt Test Voltage in Vrms 3 lt NR3 gt Test Frequency in Hz 4 lt NR3 gt Breakdown Limit in Apk 5 lt NR3 gt Ramp Time in seconds 6 lt NR3 gt Dwell time in seconds lt EMPTY gt Step is to be user terminated 7 lt NR3 gt Minimum Capacitance Limit in F 8 lt NR3 gt Maximum Capacitance Limit in F 9 lt NR3 gt Minimum DF Limit no units 10 lt NR3 gt Maximum DF Limit no units 11 lt NR1 gt Time period for arc detection 4 10 15 20 30 or 40 lt EMPTY gt Arc detection disabled i lt NR1 gt Arc detection limit in mA lt EMPTY gt Only valid if arc detection disabled in field 11 NONE No discharge if next step compatible 13 lt STRING gt FAST Fast discharge RAMP Discharge same as ramp ABORT Abort on failure n TRINO CONT Continue on failure SEME D gt Option AC 30 is no
179. n the 15 pin connector identified as DIGITAL I O as shown the photograph above The 95x connector is a standard two row 15 pin female Dsub connector any suitable male mating connector may be used The diagram below shows the pin locations within the connector as viewed from the rear panel of the 95x Page 102 of 151 95x Series Operating Manual April 23 2015 The following table contains a description of the signal on each pin in the connector Each input and output signal can be configured as the active level being low or high or each input may be disabled Pin 1 12VDC Internal 12VDC power source internally fused 100mA self resetting Active whenever an unsafe voltage or current is present on the 95x terminals Common Reference signal for all digital inputs and outputs Digital Ground internally connected to the 95x chassis ground Starts a test sequence when transitions inactive to active This may also be used to continue a test sequence when it is waiting for user interaction e g in a HOLD step or programmed for a user terminated test step If the SEQUENCE input signals are not used to select a Pin4 START Input sequence then a sequence must have been already manually selected at the front panel If the 95x is waiting for the front panel START button to be pressed while running a test sequence i e waiting for user interaction then an inactive to active transition of the START signal will also continue the s
180. n the character data area The CLR key aborts the edit the character data is cleared and the overwrite mode is initiated The ENTER key exits the edit mode retaining the changes made Overwriting Character Data If the user presses any of the numeric keys or the CLR key then the overwrite mode of entry is initiated starting with the corresponding character and with the leftmost character Page 25 of 151 95x Series Operating Manual April 23 2015 The Up Arrow and Down Arrow keys change the selected character to the next or previous available character in the character set The numeric keys and the A through F keys places the corresponding character and moves the selection point to the right one position The Left Arrow key acts as a delete key deleting the previous character and moving the selection point to the left one position The Right Arrow key places a space character and moves the selection point to the right one position The CLR key removes all of the existing entry and places the selection point in the leftmost character position The ENTER key terminates the character data entry retaining the changes made and also moves the selection point in the menu to the right or downwaros as applicable e Changing Hexadecimal Data Hexadecimal data is treated exactly the same as character data see above but with the available character set restricted to O through 9 and A through F ADJUSTING THE DISPLAY
181. n to the above all models have 2 and 4 wire DC Low Resistance and Ground Leakage Testing capabilities a RS232 interface a Digital I O interface and a VICL proprietary interface INTERFACING OPTION This option may be fitted in any 95x Option GPIB 9 adds a GPIB interface The 95x has Digital I O RS232 Ethernet and USB Printer interfaces as standard DC VOLTAGE OPTIONS This option may be fitted in any 95x except the 959i Option DCNEG changes the polarity of the DC Voltage capability to negative but limits the minimum DC output voltage to 200V INTERNAL AC VOLTAGE OPTIONS One or none of these options may be fitted in a 951i 952i 953i 954i or 957i Page 12 of 151 95x Series Operating Manual April 23 2015 Option AC 2 changes the AC Voltage capability to 10 2000V and has increased drive capability at all voltage output levels Option 500VA not available for the 952i or 954i extends the AC voltage drive capability to 100mArms Option AC 10 only available for the 957i extends the AC voltage drive capability to 10KVrms same as standard in a 955i INTERNAL GROUND BOND OPTION This option may be fitted in a 957i and cannot be fitted if Opt AC 10 is fitted Option GB 40 adds ground bond testing capability to the 957i same as standard in a 952i 954i and 959i EXTERNAL AC VOLTAGE OPTION This option may be fitted in a 951i 952i 953i 954i 955i or 957i Option AC 30 extends the maximum AC Voltage capability
182. nd option content of the 95x is not capable of achieving Page 24 of 151 95x Series Operating Manual April 23 2015 e Changing Numeric Data After making the numeric data the selection point in the menu the user can overwrite the data by using the data entry keys While overwriting the selection point becomes a single character position within the numeric data O A numeric key places the corresponding character and moves the selection point to the right one position Certain numeric data allow the user to change the units of the data e g between current and resistance and or change the multiplier for the data e g select an entry in microamps or milliamps To change the units press the UNIT key while the entire numeric data is selected to change the multiplier press the UNIT key while entering the numeric data The Left Arrow key acts as a delete key deleting the previously entered character The CLR key removes all of the existing entry and places the selection point in the rightmost character position The LIMIT key sets the numeric data to the highest possible value in most cases while entering the lower limit in a range pair of data the LIMIT key sets the minimum value in some other cases the LIMIT key has a special use denoted in the description for that specific data The Right Arrow or ENTER key terminates the numerical data entry and also moves the selection point to the right or downwards as applicable e
183. ndicated as BREAKDOWN e Ifa stepis not set for DUT GROUNDED option HSS only and is set for a breakdown limit less than 7mApk then the 95x continuously monitors the peak current in the HV terminal and shuts down the voltage if this Page 44 of 151 95x Series Operating Manual April 23 2015 exceeds nominally 7 5mApk Typically this is detected within 30usec and shuts down the test within 1msec this is indicated as HV TRIP This can be disabled in the CNFG TEST menu e The 95x continuously monitors the instantaneous DUT current and shuts down the voltage if this exceeds the user set breakdown peak current limit for that step Typically this is detected within 30usec and shuts down the test within 3msec this is indicated as BREAKDOWN e The 95x monitors the RMS current for each cycle for AC type steps and the DC current for periods of nominally 5msec for DC type steps If this is above the loading capability of the 95x voltage source for this limit see Loading Capability in the relevant Specifications section for the test type being run then this shuts down the voltage this is indicated as OVERCURRENT LEAKAGE CURRENT l This is not applicable when pulse testing The leakage current of a DUT is a steady flow of current caused by leakage in the DUT generally either intentionally by circuitry or unintentionally by inter wiring leakage capacitance and resistances Unlike breakdown current leakage current is generally fairly linear
184. needed so set to the maximum DWELL 0 1sec No timing requirement so perform a fast test Test QUAD Test the inductance Lim 339 3m 414 7m0 As required DISCHARGE NONE Don t discharge before the next test saves test time ON FAIL ABORT SEQ Seq 1 Step 3 GB Not testing RMS impedance so use GB LEVEL 10 000A 60 0Hz As required V CLAMP 8 0v Not needed so set to the maximum DWELL 0 1sec No timing requirement so perform a fast test Test INPHS Test the resistance Lim 0 0u 10 00m0 As required DISCHARGE FAST ON FAIL ABORT SEQ Page 85 of 151 95x Series Operating Manual April 23 2015 The total test time is nominally 0 3 seconds which could be reduced to 0 15 second with ease SPECIFICATIONS Specifications are valid at the 95x terminals for 1 year at ambient temperatures within 5C of calibration temperature add 5 of accuracy specification per C outside of this All specifications are relative to the calibration standards used Add digit to all accuracies for displayed results results available with enhanced resolution from interfaces TEST CURRENT SOURCE l The following apply at the SOURCE terminals Test Current Range 0 100 to 40 000Arms Test Current Accuracy lt 0 5 0 005A 0 005 per Hz above 100Hz accuracy Test Current Overshoot lt 10 lt 0 2s ramp time lt 5 lt 0 5s ramp time lt 2 gt 0 5s ramp time Settling to lt 0 5 of final value in lt 0 1sec 2 cycles Test Frequency 40Hz to 500Hz
185. nel enters either the REMOTE or REMOTE LOCK OUT state depending on the interface and the commands executed and any menu in progress is aborted o REMOTE The front panel is locked out other than the STOP button and the START button in some circumstances but the user can return to the LOCAL state by pressing the CNFG key o REMOTE LOCK OUT The front panel is completely locked out except for the STOP button and the START button in some circumstances The user cannot return the front panel to any other state by front panel action e The GPIB interface also has a set of remote states associated with it as defined by IEEE488 1 and IEEE488 2 The 95x does NOT decode commands while in the GPIB LOCAL or GPIB LOCAL LOCK OUT states as required by IEEE488 2 Transitions between the GPIB interface states are controlled by specific GPIB bus commands as defined by the standards e ALOCKOUT command is provided on the RS232 and Ethernet interfaces to allow the user to command the front panel to the REMOTE LOCK OUT state this command raises an error if received via the GPIB interface e ALOCAL command is provided on the RS232 and Ethernet interfaces to allow the user to remotely return the front panel to the LOCAL state This command must be the last command in a set of commands GPIB BUS COMMANDS Most standard GPIB bus commands are implemented in the normal fashion however some cause a special activity in the 95x DEVICE CLEAR SDC AND DCL Either
186. nfiguration and accuracies which yield the desired error ratio to the 95x series accuracy at the currents used in the 95x see the Ground Bond Verification portion for the accuracies and current levels These may have to be custom built Option HSS only Nominal 100KQ 1MQ and 10MQ 20 resistors capable of withstanding 1000V and a milli ammeter with an accuracy of better than 0 25 at 100uA 1mA and 10mAdc for a 4 1 accuracy ratio the 95x specification is 1 STARTING VERIFICATION To start the internal verification procedure press EXT The user prompts the user to select the VERIFY or ADJUST calibration procedure Since the VERIFY procedure is always initially selected press ENTER to start the procedure The 95x then performs a few internal tests to ensure basic functionality of the product then starts the actual verification procedure which is described in the following sub sections in the order shown Page 115 of 151 95x Series Operating Manual April 23 2015 DC VOLTAGE VERIFICATION The user should connect a DC Voltage measuring device equipment 1 in the equipment list above to the HV and the GND GUARD terminals of the 95x While the 95x prompts whether to verify the voltage there are no unsafe voltages present so the user may safely make connections and configure the measurement device as needed In some circumstances a different measuring device may be used depending on the voltage being measured ENSURE THAT
187. ng any adjustment to the 95x The 95x line power input is fused with a 5mm x 20mm TT3 15A fuse mounted in the rear panel next to the line power entry If the user needs to replace this fuse it must be replaced with an exact equivalent fuse noting the time and current ratings Although the 95x is fused at 3 15Arms the unit can draw surges of up to 10Apk during normal operation and up to 100Apk during initial application of power The user should ensure that the power cord is rated for at least 5Arms continuous operation CONNECTING OPTION AC 30 TO THE 95X If the 95x has option AC 30 installed the user must connect the external transformer unit to the 95x in order to be able to use it Page 19 of 151 95x Series Operating Manual April 23 2015 The user may use the 95x without the external transformer unit if the capabilities of option AC 30 are neither programmed nor required CAUTION ENSURE THAT ALL CONNECTIONS ARE PROPERLY MADE BETWEEN THE OPTION AC 30 EXTERNAL TRANSFORMER UNIT AND THE 95x BEFORE ATTEMPTING TO PERFORM ANY TEST USING OPTION AC 30 EXTREMELY HIGH VOLTAGES CAN BE PRESENT WITHOUT WARNING IF MIS WIRED There are two cables from the option AC 30 external transformer unit which must be correctly connected to the 95x before attempting to perform any test using option AC 30 e A shielded coaxial cable terminated in a BNC connector This must be connected to the BNC connector marked EXT FB on the rear panel of the 95x Ensur
188. ng the numeric keys and then press ENTER The user is now shown the difference in calibration at 10 between this calibration and the last calibration of the 95x If the change is acceptable then press START to accept it and continue the procedure otherwise abort the calibration by pressing STOP NOTE the 95x specification at this level is 1 5 The 95x display will show FAILED if the calibration is out of range for calibration not if the change is beyond the specification e Option HSS only The user is now prompted to attach a 1Mohm resistor and a milli ammeter equipment 8 listed above The resistor should be connected between the HV terminal of the 95x and Page 113 of 151 95x Series Operating Manual April 23 2015 the HI terminal of the milli ammeter the LO terminal of the milli ammeter should be connected to the RETURN terminal of the 95x When the equipment is correctly connected press START to continue the procedure The user is now shown the reading as measured by the 95x nominally 1mA The user should use the UP and DOWN arrow keys located below the display of the 95x to adjust the 95x reading to be within the allowable tolerance of the milli ammeter reading the 95x specification is 0 01mA When completed satisfactorily then press START to continue the procedure otherwise abort the calibration by pressing STOP If all steps above were completed successfully then the calibration is completed and the 95x display shows FINI
189. nge 951i 952i and 956i 30 to 6500V 953i 954i and 955i 50 to 11000V 957i 100 to 15000V Opt HSS 30 to 5000V For line voltages below 115V linearly reduce the maximum test voltage by 1 V unless Opt LOLINE is fitted there is no reduction for Opt LOLINE Test Voltage Accuracy Except 957i lt 0 25 1 25V 0 01 0 05V per mA load 957i lt 0 75 2V 0 01 0 05V per mA load add 0 5 above 10000V Test Voltage Overshoot lt 5 lt 0 25s ramp time lt 1 Settling to lt 0 1 of final value in lt 0 5sec Page 66 of 151 95x Series Operating Manual April 23 2015 CURRENT MEASUREMENTS DUT ISOLATED l Measurements are performed in the RETURN terminal of the 95x Breakdown Current 1uA to 280mApk DC 50kHz bandwidth lt 1 1uA accuracy lt 30usec detection time lt 3msec response time typically lt 500usec Leakage Current 0 0nA to 200mA 7 25msec measurement period 100ms for dwell time gt 2 sec lt 0 25 0 5nA accuracy Capacitive Loading Effects 951i 952i and 956i add X 0 2nA 2 5nA per KV 953i 954i and 955i add X 0 3nA 3 5nA per KV 957i add X 0 5nA 5nA per KV X C 0 01uF below 0 01uF or X v C 1uF above 1uF or otherwise X 1 0 Arc Current 1 to 30mArms 50KHz 5MHz bandwidth lt 10 1mA accuracy at 1MHz 4us 10us 15us 20us 30us or 40us measurement period Cable Compensation lt 1 of error RESISTANCE MEASUREMENTS DUT
190. nown the user should contact Vitrek for assistance The 95x has an internal set of one time use passwords for this circumstance DISPLAYING BUILD INFORMATION e Ensure that the display indicates that the 95x is in the base menu state i e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base menu state e Press the CNFG key e The display now shows the main configuration menu an example of which is TEST PRINTOUT SYSTEM INTERFACES DIGITAL I O BUILD SET TO DEFAULTS LOCK PASSWORD 000000 RELOCK e Using the Left Arrow or Right Arrow keys as needed change the selection point to the BUILD line e Press the ENTER key e The 95x now displays the build configuration menu an example of which is SERIAL 123456 FIRMWARE v1 12 FP v1 10 MEAS v1 10 DRIVE v1 10 BASE UNIT 9511 DC OPTION NONE AC2 OPTION NO AC30 OPTION NO 500VA OPTION NO PMT1 OPTION YES HSS OPTION NO MAX DC 6 5KV MAX AC 6 0KV INTERFACE GUL 3 UPGRADE 000000000000 e The user may navigate this menu but may not make changes to it The information available is as follows o SERIAL This shows the serial number of this 95x o FIRMWARE This shows the main firmware revision number installed in this 95x This can be upgraded along with the MEAS and DRIVE firmware by the user via the RS232 Ethernet or GPIB interface Contact Vitrek or your local representative
191. nt ViTREKs liability for breach of warranty under any contract or otherwise shall not exceed the original purchase price of the specific instrument shipped and against which a claim is made Any recommendations made by ViTREK or its representatives for uses of its products are based on tests believed to be reliable but VITREK makes no warranties of the results to be obtained This warranty is in lieu of all other warranties expressed or implied and no representative or person is authorized to represent or assume for ViTREK any liability in connection with the sale of our products other than set forth herein Document number MO 95x GOM revision H 25 February 2015 Copyright 2009 2015 ViTREK All rights reserved No part of this publication may be reproduced transmitted transcribed stored in a retrieval system or translated into any language in any form without prior written consent from ViTREK This document is copyrighted and contains proprietary information which is subject to change without notice The product displays and instructional text may be used or copied only in accordance with the terms of the license agreement In the interest of continued product development ViTREK reserves the right to make changes in this document and the product it describes at any time without notice or obligation ViTREK 12169 Kirkham Road Poway CA 92064 USA Telephone 858 689 2755 Fax 858 689 2760 Web www vitrek com Email info vitre
192. nt level Pressing the LIMIT key while this setting is selected causes it to be set to the maximum value See Breakdown Current for further details regarding breakdown currents o The minimum value which can be set is 1uA o The maximum value which can be set is as specified in the Peak Shutdown Current portion of Surge Current Limiting and Shutdown RAMP Allows the ramp time period to be programmed either as a time or rate The UNIT key toggles the selection between these two methods DWELL Allows the dwell time period to be programmed to the desired time or it may be set to be user terminated by pressing the LIMIT key while this setting is selected Test 1 and Test 2 Only available for the ACW type the ACez type has a single leakage limit range which is always enabled and is always the RMS leakage current the ACCAP type has limits set in different units to ACez and ACW These allow the user to define none 1 or 2 leakage measurements to be checked against limits For the test step to successfully pass when run both the Test 1 and Test 2 measurements must pass their respective range checks or be disabled The available selections for each are Page 48 of 151 95x Series Operating Manual April 23 2015 o NONE Disables the leakage measurement o RMS Selects that the leakage check is performed on the RMS current measurement o INPHS Selects that the leakage check is performed on the in phase i e resistive loading current
193. nts measured The 95x does not just have a wide range of generated voltages and currents it can measure them too From microvolts to 10 s of kilovolts and from 100 s of picoamps to 100 s of milliamps are all measured by the 95x Using its DSP based technology the 95x knows the difference between breakdown currents leakage currents and arcing currents and gives you all of the results e Advanced measurements When it comes to AC measurements the 95x does not just measure the basics the 95x measures total in phase and quadrature components all of the time and makes available more advanced results such as in phase resistance quadrature reactance capacitance and dissipation factors e Result Analysis The 95x does not just measure it analyses the measurements after a test has been run the minimum maximum average and final measurements are available a running total of the passes and failures for each test step are also maintained across multiple runs e Not just does not breakdown but does breakdown too The 95x is not only capable of testing that a DUT does not breakdown but it is also capable of testing that a surge suppressor type device does breakdown at the correct voltage Ever worried if that surge suppressor you disconnected while safety testing was correctly reconnected does it work is it in specification Not a problem for the 95x it can be tested after safety testing e The 95x adapts itself to the
194. nu then the left side of the line shows descriptive text followed by an ellipsis character The descriptive text is selectable Ifthe user presses the ENTER key while a sub menu entry line is selected then the sub menu is opened o When a sub menu is terminated by pressing the EXIT key then the user is returned to the preceding level of menu o Ifany level of sub menu is terminated using the STOP button then all levels of menus are aborted and any changes made at any level are discarded o Only when the base level menu is terminated by pressing the EXIT key are any changes made actually saved e Ifa menu line is for informative purposes only then the left side of the line shows descriptive text followed by a colon character with the informative data at the right end of the line The descriptive text is selectable e Ifa menu line allows the user to edit its contents then the left side of the line shows descriptive text followed by a colon character with the editable data at the right end of the line The editable data is selectable some menu lines may contain more than one editable data MODIFYING MENU ENTRIES e In many places the available contents of entries in different menu lines are inter related The 95x uses a top down menu approach the topmost contents in a menu may limit the available entries in the menu below them but not vice versa Generally the user cannot set a limit or an output which the specific model a
195. o abort the entire sequence During each step the user should note the displayed measurement on the 95x display and record the difference between this measurement and the milli ammeter reading checking against the 95x specification shown in the table below When the user is satisfied that the step has been completed the user should press START to continue or STOP to abort the sequence Resistance Current 95x Accuracy Open OuA 100KQ 10mA 1 0 1mA 1MQ 1mA 1 005 0 01005mA 10MQ 100uA 1 05 1 05uA Page 119 of 151 95x Series Operating Manual April 23 2015 SECTION 11 PROGRAMMING VIA AN INTERFACE The 95x may be programmed via the RS232 GPIB or Ethernet interface All use the same general format for commands and query responses All data uses the standard 7 bit ASCII character set In general all activities are independent for each interface There are two types of command e Commands which do not have a response These always cause the 95x to take an action e Commands which have a response these are named Query commands in this document These generally do not cause the 95x to take an action other than sending back the response These all have a keyword which ends with the character Throughout this section reference is made to several special ASCII characters lt CR gt the carriage return character lt LF gt the line feed character lt FF gt the form feed character lt TAB gt the tab character lt S
196. o groups of 8 bits for easier viewing 00000000 00000000 10000000 00000000 00010000 00000000 00000000 00000001 In hexadecimal this is OO 00 80 00 10 00 00 01 keeping the same grouping as above The SWITCH step is configured as Seq 1 Step 1 SWITCH PRE DELAY 0 00sec POST DELAY 0 00sec 1 0000800010000001 Example 2 This is the same as example 1 above but using a VITREK 948 Since a ViTREK 948 is being used a 0 25sec post switch delay is needed The 56 bit code for the required state is splitting the binary into groups of 8 bits for easier viewing 00000000 10000000 00000000 00010000 00000000 00000000 00000001 In hexadecimal this is 00 80 00 10 00 00 01 keeping the same grouping as above The SWITCH step is configured as Seq 1 Step 1 SWITCH PRE DELAY 0 00sec POST DELAY 0 25sec 1 00800010000001 SPECIFICATIONS Pre or Post Switch Delay 0 00 to 9999sec lt 0 05 20ms accuracy TEST SEQUENCE TIMING CONTROL PAUSE AND HOLD The PAUSE type is generally used when the user needs to have a fixed delay inserted into a test sequence to allow for wiring or DUT settling between two test steps The HOLD type is generally used when the user needs to have some user interaction to occur prior to continuing the test sequence A timeout is provided which if it occurs will abort the entire sequence is the user does not provide user interaction e g pressing the START button asserting the DIO interface START si
197. o set a MIN LOAD setting for this type of step If not configured for a grounded load the user may also use the Continuity Sense feature to detect a disconnected RETURN path Using the MIN LOAD setting is preferred over setting a minimum leakage current or maximum leakage impedance particularly when the load has very little leakage and is capacitive as this method is both more reliable and more sensitive LEAD COMPENSATION For many applications lead compensation is not necessary for these types of test steps as the wiring leakage is generally smaller than the DUT leakage limit and so can be ignored However for the more sensitive requirements lead compensation may be needed Performing a lead compensation compensates for any leakage currents in the wiring to the 95x in all future runs of this test step When performing a lead compensation the normal connections to the 95x should be in place with the wiring positioned normally only the DUT itself should not be connected CAUTION High voltages will be present on the wiring while running in lead compensation mode Ensure that the wiring and the unused DUT connections are safely positioned Page 63 of 151 95x Series Operating Manual April 23 2015 When performing a lead compensation the leakage limits are not enforced otherwise the test step is executed normally EXAMPLES Example 1 A DUT is to have its Line Neutral power connections tested to its chassis for no breakd
198. of the improved settling performance otherwise no changes are needed e Breakdown limits can now be set to higher currents than previously allowed Page 150 of 151 95x Series Operating Manual April 23 2015 o The user may wish to change the test step limits to make use of the changes otherwise no changes are needed Page 151 of 151
199. of these cause the 95x to clear all interface buffers abort any test sequence in progress return to the no test sequence selected state and clear all interface status registers INTERFACE CLEAR IFC This causes the 95x to clear all interface buffers and clear all interface status registers It does NOT affect any test sequence in progress or affect the selected test sequence GROUP EXECUTE TRIGGER GET This can be used as a GPIB interface command terminator ETHERNET SESSIONS The Ethernet interface uses TCP IP as its transport protocol which is a session based protocol The computer is the session client and the 95x is the session server so each session is managed by the computer The 95x is only allowed to have one session active at a time The active session is established between the 95x and the opening combination of the client IP address and TCP port this combination is often called a socket With most operating systems e g Windows the management of sessions is transparent to the user being entirely handled by the OS The user only needs to program e Initiating a session opening the connection e Sending and receiving ASCII data to and from the respective streams e Closing the session Page 124 of 151 95x Series Operating Manual April 23 2015 If the 95x is power cycled then it will power up with no active session the user should employ timeouts to detect that the 95x has become off line and restar
200. on content can continuously supply at the configured test voltage and frequency see Loading Capability e DF Only available for the ACCAP type Allows the user to define the range within which the dissipation factor measurement is considered a PASS during the dwell period The limits are applied without regard to the polarity of the measured dissipation factor o Setting a DF range of 0 0000 gt 1 0000 will effectively ignore the dissipation factor measurement as all dissipation factors lay within this range by definition e ARC DETECT Not available for the ACez type and not available if DUT GROUNDED is set to YES Allows the user to program arc detection during this step Both the time and current level can be independently programmed See Arc Current and Time for details Arc detection can also be disabled by setting the leftmost time setting to OFF The 95x can be configured to not fail a test step when arcing is detected by setting the ARC setting in the CNFG TEST sub menu to DETECT ONLY e DISCHARGE Not available for the ACez type Allows the user to program whether the discharge period should use the same timing as the ramp period AS RAMP be as fast as possible FAST or skipped NONE If NONE is selected but the next step is not of an AC Voltage Withstand type then the FAST selection is used when the sequence is run In the majority of cases FAST should be used e ONFAIL Allows the user to program the 95x to abort the entire s
201. on menu an example of which is TEST PRINTOUT SYSTEM INTERFACES DIGITAL I O BUILD Page 103 of 151 95x Series Operating Manual April 23 2015 SET TO DEFAULTS LOCK PASSWORD 000000 RELOCK Using the Left Arrow or Right Arrow keys as needed change the selection point to the DIGITAL 1 O line Press the ENTER key The display now shows the Digital I O configuration menu An example of the Digital I O configuration menu is as follows START ABORT INTERLOCK PRINT SEQUENCE PASS FAIL TESTING DWELL HV IGNORE IGNORE IGNORE IGNORE IGNORE ACTIVE LO ACTIVE LO ACTIVE HI ACTIVE HI ACTIVE HI The user may navigate this sub menu and change the displayed settings as required o START ABORT INTERLOCK PRINT and SEQUENCE These allow the user to select whether the respective digital input is to be ignored active low or active high If either the INTERLOCK signal is enabled and set for active low or the ABORT signal is enabled and set for active high then the 95x will be prevented from running any test sequence if the DIO signals are removed e g the cable is unplugged If this is not intended then these signals should be used with the opposite polarity i e active high for INTERLOCK and active low for ABORT CAUTION changing the active level of the START signal may cause the 95x to detect a change in the START signal from the inactive to the active state e g if the
202. on to abort a menu and return to the base menu state e Press the CNFG key e The display now shows the main configuration menu an example of which is TEST Page 94 of 151 95x Series Operating Manual April 23 2015 PRINTOUT SYSTEM INTERFACES DIGITAL I O BUILD SET TO DEFAULTS LOCK PASSWORD 000000 RELOCK Using the Left Arrow or Right Arrow keys as needed change the selection point to the INTERFACES line Press the ENTER key The 95x now displays the base interfaces configuration settings menu an example of which is RS232 BAUD 115200 SWITCH NONE DISABLE USB NO DISABLE GPIB NO DISABLE ENET NO ETHERNET GPIB ADDR 2 The user may navigate this sub menu and change the displayed settings as required The settings affecting controlling external switch matrix units are o RS232 BAUD This setting is only used when controlling an external 964i Switch Matrix unit via the RS232 interface Its setting should match the baud rate setting in the attached 964i o SWITCH This allows the user to select the method by which external switch matrix units are interfaced to the 95x The available selections are NONE No switch matrix units are controlled by the 95x 948 SERIAL A single ViTREK 948i Switch Matrix unit is being controlled by the 95x via the RS232 serial interface The RS232 BAUD setting is ignored if this is selected 964 SERIAL A single ViTREK 964i Switch Ma
203. one at a time The 95x will remember the sequence even if it is not stored as long as power is not removed from the 95x The user only needs to program the sequence once it can then be run multiple times as needed There is no need to store the sequence into non volatile memory although the user may do so if needed stored sequences are limited in length to a maximum of 254 steps whereas the interface sequence is limited to a maximum of 999 steps The 95x remembers the results of each step performed the user can extract all of the test results as needed after completion of the test sequence By running a sequence the 95x can operate at its own speed the computer does not have to keep up with the 95x The recommended flow is as follows e Send a NOSEQ command to ensure there is no active test sequence e Send ADD commands as needed to program the desired sequence After each command send the ERR command to check for any incompatibility between the requested test step operation and the 95x The 95x will append each ADD test step to the active sequence so the user should send each desired step in the correct order e Send the RUN command The 95x will now run the sequence e Poll the 95x at intervals to detect completion of the sequence The selection of the polling interval is up to the user for short test sequences this could be as fast as every millisecond for long sequences perhaps every 100milliseconds or long
204. only the voltage on the RETURN terminal is safe at all times 95x DUT High Voltage Wire Low Voltage Wire TESTING A GROUNDED DUT OPTION HSS ONLY l In this case the user only need connect the HV terminal of the 95x to the point on the DUT which is to be tested It is expected that the DUT is grounded and that the breakdown is being tested to ground For safety reasons or if unsure if the DUT is grounded it may be desirable to also connect the DUT ground to either the RETURN or GUARD terminals of the 95x however the user should ensure that the ground of the 95x and that of the DUT are within 5Vrms of each other otherwise excessive ground loop currents may flow potentially damaging the 95x LEAD COMPENSATION Performing a lead compensation for this type of test step has no affect the test step is performed normally during lead compensation mode EXAMPLES A MOV is to be tested against its breakdown specifications The specifications are at a current of 10mA the breakdown voltage shall be between 405 and 495V The specifications state that a maximum ramp rate of 100000V sec is to be used The MOV has lt 1000pF capacitance This is achieved by using a single test step as follows Seq 1 Step 1 BRKDN CURRENT 10 00mA As required RAMP 2 00KV s As recommended lt 10 Vmin sec Lim 405 0 495 0v As required ON FAIL ABORT SEQ The total test time will be less than 350ms After the sequence is run the actual highest voltage and
205. ontains previously obtained Lead Compensation data Ensure that the display indicates that the 95x is in the base menu state e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base menu state A test sequence may also be edited while the user is reviewing the results of a previously run test sequence Press the EDIT key The display now shows the last used test sequence number and the name associated with that test sequence An example is EDIT TEST SEQUENCE 2 95x LINE HYPOT If needed change the test sequence number to select the desired test sequence by using the Up Arrow or Down Arrow keys or using the numeric keys and then press the ENTER key The display now selects the name field The user can enter a name or alter the existing name by pressing the Up Arrow key followed using the Up Down Left and Right keys to change select each character and the user may use the numeric keys to directly enter numeric characters Press the ENTER key The display now shows the first test step step 1 of the existing test sequence An example is Seg 2 Step 1 ACW LEVEL 1500 0V 60 0Hz To select a different test step in the existing test sequence as needed navigate the menu using the Left and Right Arrow keys to select the test step then press the Up or Down Arrow key until the desired test step is shown The user may edit the selected test step by navigating the menu and alt
206. or entry of the A through F characters b The UNIT key This is used to change the units during numeric data entry and is also used while running a test or while reviewing test results to change the displayed test result measurement c The LIMIT key This is used during numeric data entry to set a value to the largest possible When setting test dwell times this sets that the dwell should be user terminated rather than automatically terminated after the entered time When setting a resistance type upper limit this allows the user to set that there is no upper limit d CLEAR key This is used to clear an entry during numeric or character data entry MENU OPERATION AND DATA ENTRY Most user activities using the front panel controls are performed using menus All menus use the same general operating methods described in this section The user should read this section before attempting to operate the 95x BASE MENU STATE When the 95x is not performing a menu and is not performing a test sequence the display shows the model in the uppermost display line and the date and time in the lower most display line this is called the base menu state in this document Most menus require the 95x to be in the base menu state to be initiated an example of the base menu state display is ViTREK 9511 9 Feb 10 9 08 51lam If the 95x is not in this state and the user is unsure how to return to this state then pressing the STOP button will accomplish t
207. ound the 95x was restricted or the ambient temperature is too high around the 95x The user should wait at least 15 seconds to allow it to cool down properly before either re attempting the test or removing power from the 95x e The test sequence and presently shown step are shown in the upper left corner of the display Following the step for test step types which have a ramp and a dwell period a single character is shown which is either r indicating that the failure occurred during the ramp period of the step or d indicating that either the failure occurred in the dwell period or the test completed normally The user can change the step number being reviewed by selecting the step in the display using the Left Arrow or Right Arrow keys as needed then using the Up Arrow or Down Arrow keys to step forwards or backwards through the Page 38 of 151 95x Series Operating Manual April 23 2015 test steps in the test sequence Note that test steps which do not have any measurements i e switch unit control steps or timing test steps are not reviewable and are skipped unless they contain a failure Only test steps which have been performed can be reviewed as an example if a 10 step test sequence was aborted during the 2 test step then only the 1 and 2 test steps are reviewable as no others were performed The remainder of the upper portion of the display shows the instantaneous applied voltage or current and frequenc
208. owing field is also lt EMPTY gt Abort test sequence if fails PULSE CONFIGURATION FIELDS Field Field Format Value 1 lt STRING gt PULSE 2 lt NR3 gt Level in V POSITIVE Unipolar ve 3 lt STRING gt NEGATIVE Unipolar ve BIPOLAR Bipolar 4 lt NR3 gt Ramp time tr in seconds 5 lt NR3 gt Hold Time th in seconds 6 lt NR3 gt Breakdown Current Limit in A J lt NR1 gt Time period for arc detection 4 10 15 20 30 or 40 lt EMPTY gt Arc detection disabled F lt NR1 gt Arc detection limit in mA lt EMPTY gt Only valid if arc detection disabled in field 7 ABORT Abort on failure 3 RAD CONT Continue on failure Example ADD PULSE 250 0 POSITIVE 1e 3 10e 3 0 05 4 10 ABORT Configures the following in order A PULSE type test step A single positive pulse 1ms ramp time Page 140 of 151 95x Series Operating Manual April 23 2015 10ms hold time 50mA maximum current 4us arc detection 10mA arc detection limit Abort test sequence if fails BRKDN CONFIGURATION FIELDS Field Field Format Value 1 lt STRING gt BRKDN 2 lt NR3 gt Test Current Level in A 3 lt NR3 gt Initial Ramp Rate in V sec 4 lt NR3 gt Minimum Breakdown Voltage in V 5 lt NR3 gt Maximum Breakdown Voltage in V ABORT Abort on failure j SAIRING CONT Continue on failure lt EMPTY gt lt MISSING gt Load is not
209. own at 2000Vdc using a 1 second ramp and a 30 second dwell It is known that the DUT leakage is less than 5mA at this voltage level if this is not known then start by using 5mA as the limit and adjust it as needed This is accomplished in a single step as follows Seq 1 Step 1 DCez Only breakdown detection is needed so use the DCez type LEVEL 2000 0v As required RAMP 1 00sec As required DWELL 30 0sec As required Lim On 5 000mA As required ON FAIL ABORT SEQ Example 2 A solar panel is to be tested for no breakdown at 2500Vdc using a 1 second ramp and a 5 second dwell time The panel is estimated to have between 1 and 4uF of capacitance The test limit for breakdown has been decided to be 1mA and it has been decided to not test for arcing in the panel because of its capacitance This is accomplished in a single step as follows Seq 1 Step 1 DCW Different breakdown and leakage limits so use DCW LEVEL 2500 0v As required BREAKDOWN 20 00mApk Must be greater than the charging current RAMP 1 00sec As required DWELL 5 00sec As required Delay 1 00sec Allow for dielectric storage in the panel Lim On 1 000mA As required ARC DETECT OFF As required DISCHARGE FAST ON FAIL ABORT SEQ Example 3 The solar panel used in example 2 above is also required to be tested for insulation resistance at 500Vdc the specification requires the panel to have gt 100Mohm resistance A ramp time of 1 second and a dwell time
210. p to fail eee Ear One The user aborted the test sequence eee anne ii The Continuity Sense safety feature was tripped which caused the step to fail 01 01d 1500V 60 0Hz The INTERLOCK DIO interface signal became unasserted which caused the step to INTERLOCK OPENED fail 01 01r 1500v 60 0Hz UNSTABLE LOAD The DUT load was too unstable preventing the 95x from providing a stable test voltage or current or the line voltage was too low to achieve the programmed test voltage and load current 01 01r 1500v lt MIN LOAD Minimum load detection is enabled and the configured minimum load for this test step was not achieved during ramp in a DCW or DCIR type step which caused the step to fail 01 01d SWITCH SWITCH FAILED The 95x could not communicate with an external switch matrix unit during execution of a SWITCH type step 01 01d HOLD TIMEOUT The user failed to continue the sequence within the programmed timeout period while executing a HOLD type step 01 01d 1500v 60 0Hz INT FAULT An internal fault was detected which caused the step to fail The 95x may need to be power cycled to recover from this This is often caused by extreme interference but may be caused by an unrecoverable failure in an internal circuit of the 95x 01 01d 1500v 60 0Hz OVERHEATED The 95x overheated which caused the step to fail This can occur because the load current was too high for too long or the airflow ar
211. pecified current between 1 and 40Arms The remainder of this manual assumes that these optional limits are at the maximum for the specific model Page 13 of 151 95x Series Operating Manual April 23 2015 SOFTWARE QT Pro II 950 A 45 day free trial included with each unit This software provides The user does not need to write software to use the 95x with a computer Can control testing using very complex switching systems when used with ViTREK 964 Switch Matrix units Easy to use fully graphical interface on a Windows based computer Multi level user login enabling the configuration of tests to be locked except for certain users Company wide use of test sequences using the company network Test sequences can be downloaded into the 95x and run without the computer Test results recorded on a computer or on the company network Computer generated multi level test reports Compatibility with a wide range of Windows versions Windows XP through Windows 8 as a Desktop Application ACCESSORIES TL 115 95 115V Receptacle Hipot Test Adaptor TL 115 GBR 115V Receptacle Ground Bond Test Adaptor TL 115 95GBR 115V Receptacle Hipot and Ground Bond Test Adaptor TL IEC 95 1EC320 Power Socket Lead set for HiPot TL IEC GBR IEC320 Power Socket Lead set for Ground Bond TL IEC 95GBR IEC320 Power Socket Lead set for HiPot and Ground Bond TL 209 Standard HV CONT Alligator Clip Test Lead Set one supplied with each unit K 1R 4 Wi
212. performing a lead compensation the impedance limits are not enforced otherwise the test step is executed normally During a lead compensation the SOURCE SENSE SOURCE and SENSE wires should be solidly shorted together at the DUT end the 95x will then measure the resistance and reactance and will automatically subtract them from all future measurements For reference a near perfect 4 terminal short circuit can be created by connecting the leads to the same short straight length of heavy gage conductor in the order SOURCE SOURCE SENSE and then SENSE This creates the situation where there is no current flow in the DUT between the SENSE terminals so there is no measurable impedance between them The effective impedance of this connection is well below 1uQ at line frequencies EXAMPLES Example 1 It is required to test that a DUT chassis is bonded to its grounding terminal with no more than 2 5V drop at 25Arms when tested for at least 30 seconds This is accomplished in a single step as follows Seq 1 Step 1 GBez No ramp or discharge RMS limits so use GBez LEVEL 25 000A 60 0Hz As required DWELL 30 0sec As required Lim 0u 2 5000v As required ON FAIL ABORT SEQ Page 84 of 151 95x Series Operating Manual April 23 2015 Example 2 It is required to test that a DUT chassis is bonded to its grounding terminal with no more than 0 10 impedance at 40Arms when tested for at least 30 seconds The source of the t
213. pril 23 2015 During each step the user should note the displayed current and record it checking against the 95x specification shown in the table below When the user is satisfied that the step has been completed the user should press START to continue or STOP to abort the sequence Voltage Level Frequency Parameter 95x Models 95x Accuracy Zero Zero RMS All except 956i 959i 2000V 60Hz RMS All except 956i 959i 2000V 60H2 InPhase All except 956i 959i All except 956i 959i and if 9000V 60H2 RMS 955i only LOW OHMS RESISTANCE VERIFICATION The user should connect the prompted value resistance standard equipment 4 5 and 6 in the equipment list above to the SENSE and SOURCE terminals of the 95x using a 4 wire connection method for all but the final step in this part of the sequence which should be a 2 wire connection to the SENSE terminals only For all 4 wire connections the 95x internal current source is from the SOURCE terminals and the voltage sense uses the SENSE terminals ensure that the resistor is connected with the terminals and terminals correctly paired for a 4 wire measurement The table below shows the listing of the resistances requested for verification and the 95x specification at each resistance value When prompted for each step the user should either e Press the START switch to perform the verification e Press the STOP switch to abort the entire sequence During each step the user should note the d
214. pril 23 2015 TIME 1 00sec Delay 0 05sec Lim 0 0m 150 0KQ ON FAIL ABORT SEQ 2 4 WIRE Allows the user to program whether the 2 wire or 4 wire measurement technique is to be employed TIME Allows the test time period to be programmed in seconds or set to be user terminated with the START button by pressing the LIMIT key while this setting is selected Delay Allows the user to program a delay in the test period before the measurement range check is performed Lim Allows the user to define the range within which the resistance measurement is considered a PASS during the dwell period ON FAIL Allows the user to program the 95x to abort the entire sequence ABORT SEQ or only this step CONT SEQ if this step fails any of its checks A user abort STOP button always aborts the entire sequence CONNECTING TO THE DUT See Terminals and Wiring for general wiring and safety recommendations The 95x requires that the DUT at least that portion which is being measured is floating with respect to ground 2 WIRE MEASUREMENT CONNECTIONS When making 2 terminal measurements the resistance of the wires the contact resistance to the DUT and the contact resistance within the 95x front panel terminals are all included in the result use the following recommendations to reduce these effects Use heavy gage wires Ensure that the connections to the DUT are clean and are solidly made Ensure that the connectors on the wires
215. quence is ready to run View the pass and fail counts for any defined test sequence and optionally to clear them This never requires a password except optionally to clear the counts ii If atest sequence has been run and is still selected View the test results of each step within the previously run test sequence This is automatically performed after a test sequence has been run This never requires a password g LEADS Allows the user to run the presently selected test sequence in Lead Compensation mode This allows the 95x to store any load offsets for each step in the test sequence and to correct all future tests using that test sequence for these load offsets This optionally requires a password h EXT Allows the user to perform either an adjustment or verification calibration of the 95x against external standards This optionally requires a password this is separate to the other menu activity password i CNFG Initiates a menu allowing the user to configure the 95x This uses a series of sub menus This optionally requires a password j TEST Shows the present operational status of the 95x and allows the user to perform internal operation verification this optionally requires a password 8 The data entry keys a The numeric keys 0 through 9 decimal point and change sign keys These are used during numeric or character data entry NOTE during hexadecimal or character data entry certain of the menu keys can be used f
216. re Kelvin Low Resistance Measurement Lead Set K 2R 4 Wire 40A GB Test Lead Set one supplied with each 952i 954i 959i and 957i with Opt GB40 RS 2 6ft RS232 null modem cable 95x to Computer RSS 9 Remote Start Switch RSF 9 Remote Start Footswitch HVW 9 High Voltage Warning Light RM 1 Rack Mount Kit for the 95x series DIO IS9 DIO Isolator for the 95x series Available in models for 3V 5V 12V or 24V logic Page 14 of 151 95x Series Operating Manual April 23 2015 SECTION 2 SAFETY The user should be aware of these safety warnings at all times while using the 95x WARNING THE 95x PRODUCES VOLTAGES AND CURRENTS WHICH MAY BE LETHAL UNSAFE OPERATION MAY RESULT IN SEVERE INJURY OR DEATH WARNING IF THE 95x IS USED IN A MANNER NOT SPECIFIED BY VITREK THE PROTECTION PROVIDED BY THE EQUIPMENT MAY BE IMPAIRED AND SAFETY MAY BE COMPROMISED POWER AND GROUNDING WARNING THE 95x IS INTENDED TO BE POWERED FROM A POWER CORD HAVING A PROTECTIVE GROUND WIRE WHICH MUST BE INSERTED INTO A POWER OUTLET HAVING A PROTECTIVE GROUND TERMINAL IF THE 95x IS NOT POWERED FROM A SUITABLE POWER SOURCE THEN THE CHASSIS GROUND TERMINAL LOCATED NEAR THE POWER ENTRY CONNECTOR ON THE REAR PANEL MUST BE PROTECTIVE GROUNDED WARNING TURNING OFF OR OTHERWISE REMOVING POWER TO THE 95x WHILE IT IS GENERATING HIGH VOLTAGES WILL NOT ENABLE THE 95x TO DISCHARGE THE DUT AND MAY DAMAGE THE 95x THE DUT MAY HAVE DANGEROUS VOLTAGES PRESENT F
217. rent are recorded and the DISCHARGE period is started Page 73 of 151 95x Series Operating Manual April 23 2015 e DISCHARGE During this period the DUT is discharged as fast as possible NOTE the actual reported test current in breakdown may be slightly higher than expected because of the characteristics of the breakdown of the DUT If this is excessive then the user should select a slower maximum ramp rate CONFIGURING An example BRKDN menu is as follows Seq 1 Step 1 BRKDN CURRENT 5 000mA RAMP 5 00KV s Lim 800 0 850 0v ON FAIL ABORT SEQ e DUT GROUNDED Only available if option HSS is installed This selection allows the user to select either o NO This selection indicates that the DUT is isolated from ground the 95x will use the current in the RETURN terminal to detect breakdown This is as if option HSS were not installed o YES This selection indicates that the DUT is grounded the 95x will use the current in the HV terminal to detect breakdown e CURRENT Allows the DC test current to be programmed The entry is limited to be a minimum value of 1uA e RAMP Allows the maximum ramp rate to be programmed o The accuracy of the breakdown voltage measurement may be limited by the ramp rate at high rates It is not recommended to set ramp rates of more than 10 times the lowest expected breakdown voltage per second e g if the lowest expected breakdown voltage is 500V then the highest recommended rate se
218. rmat Value 1 lt STRING gt DCIR 2 lt NR3 gt Test Voltage in V 3 lt NR3 gt Breakdown Limit in A 4 lt NR3 gt Ramp Time in seconds 5 lt NR3 gt Dwell time in seconds lt EMPTY gt Step is to be user terminated 6 lt NR3 gt Pre check delay in seconds PASS Test is ended as soon as passes FAIL Test is ended as soon as fails 7 STRING TIME Test always extends for the full time STDY Test is ended if the load is within limits and is steady or improving AMPS Leakage limits are in Amps a SIRING OHMS Leakage limits are in Q 9 lt NR3 gt Minimum Leakage Limit in A or Q i lt NR3 gt Maximum Leakage Limit in A or Q lt EMPTY gt No maximum limit only valid for impedance dl lt NR1 gt Time period for arc detection 4 10 15 20 30 or 40 lt EMPTY gt Arc detection disabled 12 lt NR1 gt Arc detection limit in mA lt EMPTY gt Only valid if arc detection disabled in field 11 NONE No discharge if next step compatible 13 lt STRING gt FAST Fast discharge RAMP Discharge same as ramp ABORT Abort on failure 14 RNG CONT Continue on failure 15 lt NR3 gt Min Load in Farads may be lt MISSING gt if field 16 is also lt MISSING gt e NS Load is not grounded GND Load is grounded valid if option HSS is fitted lt STRING gt a ISO Load is not grounded Example ADD DCIR 1000 0 0 015 1 5 60 0 0 0 FAIL AMPS 0 0 25e 6 4 10 FAST ABORT Configures the following in order A DCW type test step 100
219. row keys or press the ENTER key The display now selects the name field The user can enter a name by pressing the Up Arrow key followed using the Up Down Left and Right Arrow keys to change select each character and the user may use the numeric keys to directly enter numeric characters e Press the ENTER key The display now shows the first test step step 1 with no test type selected NEW is displayed An example is Seq 2 Step 1 NEW e Using the Up or Down Arrow keys select the desired first test step type e Using the information for the selected test step type shown later in this document program the requirements for this test step e Ifno more test steps are required press the EXIT key The 95x stores the test sequence and makes it ready to be run Page 33 of 151 95x Series Operating Manual April 23 2015 If further steps are required then press the Up arrow key once when the previously entered step is selected the next step will be displayed with a NEW test type Repeat as required for each test step Note if the user accidently creates a NEW step after the end of the test sequence press the DEL key to delete it while it is being displayed EDITING AN EXISTING TEST SEQUENCE Note editing a test sequence even if no changes are made to the test sequence will cause any Lead Compensation data for that sequence to be cleared A c character is displayed after the test sequence if the test sequence c
220. rrent for further details regarding breakdown currents o The minimum value which can be set is 1uA Page 58 of 151 95x Series Operating Manual April 23 2015 O The maximum value which can be set is as specified in the Peak Shutdown Current portion of Surge Current Limiting and Shutdown e RAMP Allows the ramp time period to be programmed either as a time or rate The UNIT key toggles the selection between these two methods O For loads having gt 0 03uF capacitance the test ramp time should be gt 0 1sec The ramp time may need to be extended beyond this to ensure the charging current is less than the desired breakdown detection current For reference the charging current in microamps C dV dT where C is the capacitance in uF and dV dT is the ramp rate in Volts per second e g 1000V sec ramp into a 10uF load is 10000uA 10mA charging current For optimum results For loads gt 0 05uF the ramp time should be gt 0 5sec For loads gt 2uF the ramp time should be gt 1sec For loads gt 20uF the ramp time should be gt 2sec If a load has significant resistance in series with capacitance then ensure that the charging current is within the capability of the series resistance to avoid it being damaged If necessary reduce the charging current by using a slower ramp rate e Min Load Not available for the DCez type This is only available if CNFG TEST MIN LOAD is set to YES This allows the user to specify
221. rt of the present test step and test step period is shown in the lower left display If this is flashing between the value and blocks then the unit is waiting for the user to press the START button to continue e g if the dwell period has been programmed for user termination otherwise the period will automatically end when it reaches the programmed time period o For most types of test step the remainder of the lower display shows a measurement result During the test dwell period the displayed measurements are automatically filtered with a rolling time constant Initially the selected measurement is the first checked measurement but may be changed during the step by pressing the UNIT key which toggles between all measurement results available for that test type See Displayed Measurement Results If certain types of failure occur then a temporary display is shown similar to those shown when reviewing results see below e While the test sequence is running it may be aborted by pressing the STOP button e When the test sequence has been completed the TESTING indicator extinguishes the PASS or FAIL indicator is illuminated and the overall pass or failure status is temporarily displayed for approx 2 seconds and then the measured results are reviewed see the following section for details regarding reviewing results An example temporary display is SEQUENCE 1 PASSED ALL TESTS e Use the EXIT key or STOP key to return to the date time display
222. s to be tested against its tolerance 0 033uF 5 and DF lt 1 specifications A nominal capacitor at 1000V 60Hz will draw 12 4mArms so this is within the capabilities of all 95x models so the capacitor can be tested at its maximum voltage rating This is accomplished in a single step as follows Seq 1 Step 1 ACCAP LEVEL 1000 0v 60 0Hz As required BREAKDOWN 25 00mApk As required RAMP 1 00sec Slow ramp to better measure breakdown voltage DWELL 5 0sec Optional could be faster C 31 35n 34 65nF As required DF 0 0000 0 0100 As required ARC DETECT OFF Optional DISCHARGE FAST ON FAIL ABORT SEQ SPECIFICATIONS Specifications are valid at the 95x terminals for 1 year at ambient temperatures within 5C of calibration temperature add 5 of accuracy specification per C outside of this All specifications are relative to the Page 53 of 151 95x Series Operating Manual April 23 2015 calibration standards used Add digit to all accuracies for displayed results results available with enhanced resolution from interfaces LOADING CAPABILITY The listings below show the maximum loading current and power capabilities of the 95x at ambient temperatures lt 30C For ambient temperatures above 30C linearly reduce the maximum loading current and power by 1 C For frequencies above 100Hz other than 400Hz the user should linearly interpolate using the lt 100Hz and 400Hz capabilities shown in the applicable listing Where
223. see DCW Configuration Fields or DCIR Configuration Fields for details If the extra field is missing i e the user has not altered their software to support v2 02 then the minimum load detection capability is automatically disabled for that step so the actions are as previously o Users using the DCW or DCIR type steps using a maximum leakage resistance or a minimum leakage current setting to detect a disconnected load may wish to change to using the minimum ramp method instead as this offers a more reliable check e The End On termination setting for the DCIR type step has been extended to add a STDY selection This selection is compatible with the commonly used practice of terminating a DCIR measurement when the measurement is within limits and is steady or improving e The maximum loading at low voltages and the minimum test voltage during DCez DCW and DCIR type steps have been slightly altered See Specifications for details Page 149 of 151 95x Series Operating Manual April 23 2015 e The DCCAP and IRCAP type steps are no longer available The user should convert to using the DCW or DCIR types instead Recalling a sequence containing these step types created in an earlier version will cause the 95x to automatically convert them to DCW or DCIR steps respectively however the user should carefully check the conversion as it might not yield exactly the same test as the original step types o The previous types differ from the DCW
224. set the maximum leakage limit equal to or higher than the breakdown limit BREAKDOWN CURRENT l A breakdown of a DUT is a sudden generally heavy flow of current which does not cease without a reduction in the applied voltage Many standards bodies including UL define breakdown as the sudden uncontrolled flow of current this is effectively the same definition but is more ambiguous Often the user is testing products for compliance with safety standards which specify that the DUT shall not breakdown but do not specify a particular current level at which to detect breakdown Itis the industry norm to set a limit at some level above the normal leakage current level drawn by the DUT Typically this is a limit of 10mApk or 7mArms but this may need to be increased if the DUT has significant leakage or reduced if the DUT has little leakage There are four breakdown detectors in the 95x which are active throughout all types of Voltage Withstand tests these are listed below in order of decreasing speed the 3 listed is set by the user breakdown limit the others are fixed e The 95x AC and DC voltage supplies have a protective trip mechanism which shuts down the voltage if a large peak current flows beyond its capability to supply surge current for this limit see Surge Current Limiting and Shutdown in the relevant Specifications section for the test type being run Typically this detected and shuts down the test within 30usec this is i
225. signal is high and the configuration is changed from active low to active high This may cause a previously selected sequence to be run and high voltages to become present on the 95x terminals The user should ensure that no sequence is selected and that the START signal will end up being in the inactive state when changing the polarity of the START signal o PASS FAIL TESTING DWELL and HV These allow the user to select whether the respective digital output is to be active low or active high When finished press the EXIT key to exit this sub menu and then press EXIT again if no additional configuring is to be performed to exit the main configuration menu and save the settings The settings are not used until they are saved SIGNAL LEVELS Each input signal has the following characteristics Each is referenced to the COMMON signal which is internally connected to the 95x chassis ground The maximum input level guaranteed to be recognized as a low level is 1V the minimum guaranteed to be recognized as a high level is 2 3V Each has an internal pull up resistor of nominally 1 8KQ to an internal 4V level and is protected to 5V Page 104 of 151 95x Series Operating Manual April 23 2015 e Each has a nominally 10nF capacitance to the COMMON signal e Each can be directly interfaced to a contact closure or a TTL CMOS or LVCMOS logic source If the input is to be actively driven from a higher voltage logic signal than
226. st calibration of the 95x If the change is acceptable then press START to accept it and continue the procedure otherwise abort the calibration by pressing STOP NOTE the 95x specification at this level is 0 25 The 95x display will show FAILED if the calibration is out of range for calibration not if the change is beyond the specification e The above step is repeated at levels of 10mA 1mA then 100uAdc e The user is now prompted to connect a 4 wire 10KQ resistance equipment 5 listed above to the 95x terminals The 95x internal current source is from the SOURCE terminals and the voltage sense uses the SENSE terminals ensure that the resistor is connected with the terminals and terminals correctly paired for a 4 wire measurement When the 10KQ resistance is correctly applied press START to continue the procedure The user is now shown the difference in calibration at 10KQ between this calibration and the last calibration of the 95x If the change is acceptable then press START to accept it and continue the procedure otherwise abort the calibration by pressing STOP NOTE the 95x specification at this level is 0 8 The 95x display will show FAILED if the calibration is out of range for calibration not if the change is beyond the specification e The user is now prompted to connect a 4 wire 100 resistance equipment 6 listed above to the 95x terminals The 95x internal current source is from the SOURCE terminals and the voltage s
227. sting lead compensation data is discarded prior to the test sequence being run o Each test step is performed in the normal manner only the measurement results are used differently See the respective sections of this manual for each type of test step in the test sequence for details o Normal measurement limits are not enforced Any programmed breakdown or arc detections are performed and if detected aborts the test sequence with a failure e After the test sequence has been run in this manner o The display temporarily shows a message indicating that the lead compensation for this sequence is ready to be used o The lead compensation measurements are saved internally in non volatile memory and are automatically retrieved with the test sequence when the test sequence is later selected Page 41 of 151 95x Series Operating Manual April 23 2015 The presence of lead compensation data in a test sequence is indicated on the display during test sequence selection by the presence of a c immediately after the test sequence number Any saved lead compensation data for a test sequence is automatically discarded if the test sequence is selected for editing by using the EDIT key SECTION 6 TEST STEPS The previous section described how to use test sequences This section describes how to choose and configure each step within a test sequence and the specifications and limitations for each step type The table below gives an overa
228. sweatssadeaseavecnensied 70 Connectingito the DUI Mit A A E EEE ASS AS ARAS E 71 Lead COMPAS SS aa 71 EX ple ii A A A EA E AE E A eins 72 MC a A de 72 DC Breakdown Voltage Device Testing BRKDN c cccccscccccssssccsesseeecsssseceesececsessececessseceessseeceesaececeeeeceesaeeeceeaas 73 ACTIONS lA a ce 73 CONE ME a 74 Connecting O DU ii A a a A A E a A 74 Lead Compensation erai e e e AAA A AA AAA AA AAA AA 75 Ean IRA E A SE S EA EA OE AS 75 SDECITIGACI N ERA E E AEA E P OAA A ASET 75 Choosing Within the Resistance Testing Group cccsccccccccessssssecececeesessseesececesseseeaeseescecseseeaeseeseeceeseeaeseeseseseseaaeas 76 DC Low Resistance Testing LOWO aeeiiaii AEREE Ai Li EE EE E RE ET E 76 Actions While RUNING arsine anei a a e a aie a ai da a iSe E EEE iaa Sean 76 Configuring NN 76 CONNECTING TO the D O A EAEE E A AA A A A LA A OA TN 77 Lead Compensation 2 Wire aee e i Ei EEE eE eaten E ev e A Seve Ee ese e A aE Aa deine Aaa E 78 Lead Compensation A Wire J aeiee e eia iia E AE EENE enS EER a E ea eN Ea e A E EEEa n EAEE 79 EXGIMPIOS 22sec E EAE A A ias 79 Sp cification Sonea A a A A EELE AA es 79 AC Ground Bond Testing GBez and GB ccccccccsssccceessscecssssececsssseceessesecessaececsseeceesseseceeaaececsssseceesseseceesaeeeesesaess 80 ACTIONS Il RUN diri AA 81 CONEA IS EIA E 81 CONNECTING to tU E E E EAN 82 LOA COMPAS A A a a 84 Page 4 of 151 95x Series Operating Manual April 23 2015 EXMpls A AA A
229. t Sequence PAUSE Timing Control and HOLD Yes Yes Yes Yes Yes Yes Yes Yes When the user is selecting testing against the requirements of a safety standard the information given in this section should only be used as a guideline the user should consult a safety testing professional for information regarding the specific standard and application The voltage ranges shown above assume the most common option content for each model see the specifications for each type of test step for the actual ranges CHOOSING WITHIN THE VOLTAGE WITHSTAND AND LEAKAGE TESTING GROUP When Voltage Withstand and Leakage Testing is required the user must first decide whether to perform this using an AC DC or pulsed voltage the frequency to use the limits to use and the actual test type s to perform Page 42 of 151 95x Series Operating Manual April 23 2015 The 95x makes no distinction between a DC insulation resistance test and any other type of Withstand and Leakage test the user has the choice of performing a DC insulation resistance test at any test voltage within the capability of the 95x Many standards require the user to remove any over voltage suppression devices which would affect Voltage Withstand testing To check that such device s have been correctly re installed after this test and to test that they are functioning correctly see DC Breakdown Voltage Device Testing BRKDN CHOOSING AC DC OR PULSE TEST
230. t measuring device may be used depending on the voltage being measured ENSURE THAT THE MEASURING DEVICE AND WIRING IS CAPABLE OF WITHSTANDING THE VOLTAGE LEVEL PRIOR TO PRESSING THE START SWITCH AT EACH STEP The table below shows the fullest listing of the voltages and frequencies requested for verification and the 95x specification at each level frequency When prompted for each step the user should either e Press START to perform the verification the output voltage will be present after pressing this switch e Press STOP to abort the entire sequence During each step the user should measure the actual voltage and record it checking against the 95x specification When the user is satisfied that the step has been completed the user should press START to continue or STOP to abort the sequence Voltage Level Frequency 95x Models 95x Accuracy 10000V 60Hz 955i only 0 515 51 5V All except 956i 959i and if opt x 6000V 60Hz AC2 not fitted 0 525 31 5V 1900V 60Hz All except 956i 959i 0 579 11V 3 65 36 5V AC CURRENT ZERO VERIFICATION No connections to any terminals should be present during these steps The 95x prompts for the AC current zero to be verified at several different output voltage voltages and frequencies When prompted for each step the user should either e Press START to perform the verification e Press STOP to abort the entire sequence Page 117 of 151 95x Series Operating Manual A
231. t occur FULLY CONFIGURE THE 95X If there are any configuration settings in the 95x which are relied upon by the programmer then these should be explicitly set by the user application when it is first started Commands are provided to set the 95x configuration settings CHECKING FOR ERRORS Often the user wishes to ensure that a command was correctly received by the 95x and that the command was not rejected by the 95x This is easily achieved by always sending the ERR command after sending any non query command waiting for the response and checking that it is 0 There are other registers which could be used also but the ERR register provides the most information regarding the nature of the error For example BEEP START 2 lt CR gt lt LF gt ERR lt CR gt lt LF gt This would cause the response to be O lt CR gt lt LF gt As another example BEEP START 9 ERR lt CR gt lt LF gt This would not function as expected The 9 field in the BEEP command is in error which makes the 95x reject the entire set of commands This should be BEEP START 9 lt CR gt lt LF gt ERR lt CR gt lt LF gt This would cause the response to be 5 lt CR gt lt LF gt Page 146 of 151 95x Series Operating Manual April 23 2015 PROGRAM AND RUN A SEQUENCE RATHER THAN INDIVIDUAL STEPS When setting up and running a test sequence the user is recommended to run it as a sequence in the 95x rather than running individual steps
232. t of a computer It is recommended to use a high quality shielded GPIB cable Cables may be purchased from ViTREK CONTROLLING THE 95X BY THE ETHERNET INTERFACE SPECIFICATIONS Speed 10baseT or 100baseTX auto selected Duplex Half or full duplex auto selected MDI MDIX Auto selected Protocols ICMP ARP DHCP TCP IP IPv4 only TCP Port 10733 Remote Connections Only one remote connection is allowed at any given time Connector RJ45 Cable required CAT5 or CAT5e UTP or STP Cable Length lt 100m per standard CONFIGURATION Prior to configuring the 95x or connecting the 95x to a network the user must have knowledge of certain aspects of the network e The user must ascertain if the network uses DHCP or not for allocation of IP addresses e Ifthe network does not use DHCP for allocation of IP addresses then the user must choose a suitable unused IP address within the local network subnet the subnet mask of the local network and the gateway IP address to additional networks e Some networks which use DHCP allocation of IP addresses limit the allocation of addresses to known devices by means of a list of known MAC addresses In this case the user must ascertain the MAC address of the 95x and correctly configure the DHCP server prior to connecting the 95x to the local network Configure the Ethernet Interface of the 95x as follows e Ensure that the display indicates that the 95x is in the base menu state i e the display s
233. t the session If a session is inactive for more than 1 minute then the 95x will allow a session to be initiated from a different source automatically closing the inactive session This prevents a potential lockup if the user does not close an active session properly STATUS REGISTERS There are several status registers associated with the 95x interfaces STB AND SRE REGISTERS These are specifically used to show the status of and control the assertion of the GPIB SRQ signal The value of the STB register is logically ORed with the value of the SRE register if the result is non zero then the GPIB SRA line is asserted The STB register is read by the GPIB interface when a serial poll bus command is performed These are common to all interfaces They are 8 bit registers i e has values from O to 255 Each bit is defined as follows e BitO decimal value 1 binary value 00000001 set if a high voltage is currently present on the HV terminal The value of this status bit is dynamic i e its value can change without user interaction e Bit 1 decimal value 2 binary value 00000010 set when a test step dwell period is completed cleared when read when a test sequence is started when a different test sequence is selected or when reset e Bit2 decimal value 4 binary value 00000100 set if a test sequence is currently being performed The value of this status bit is dynamic i e its value can change without
234. t used may only be lt MISSING gt if field 16 is also lt MISSING gt 15 lt MISSING gt lt STRING gt INT Option AC 30 is not used EXT Option AC 30 is to be used only valid if option AC 30 is fitted i NS Load is not grounded GND Load is grounded only valid if option HSS is fitted lt STRING gt i ISO Load is not grounded Example ADD ACCAP 1000 0 60 0 0 01 1 5 60 0 0 9e 9 1 1e 9 0 0 1 0 FAST ABORT Configures the following in order An ACCAP type test step 1000V test voltage 60Hz test frequency Page 138 of 151 95x Series Operating Manual April 23 2015 10mApk breakdown limit 1 5 second ramp time 60 second dwell time 0 9nF minimum capacitance 1 1nF maximum capacitance No minimum dissipation factor No maximum dissipation factor 1 0 disables the maximum No arc detection so following field is also lt EMPTY gt Fast discharge Abort test sequence if fails HV Terminal used AC 30 not used or not installed since both fields 15 and 16 are missing DUT is isolated since both fields 15 and 16 are missing ACI CONFIGURATION FIELDS Field tt Field Format Value 1 lt STRING gt ACI lt NR3 gt Test time in seconds lt EMPTY gt Step is to be user terminated 3 lt NR3 gt Delay time in seconds 4 lt NR3 gt Minimum Leakage Current Limit in Arms 5 lt NR3 gt Maximum Leakage Current Limit in Arms lt NR1 gt Time period for arc detection 4 10
235. the RETURN terminal is used This enables the 95x to be used to test DUT s which are grounded Several of the test types have been extended to enable the user to select whether the DUT is grounded or not if this option is fitted o If option HSS is not fitted then no changes are needed o If option HSS is fitted then the user should note that several menus and interface commands have altered to enable the user to control its usage and that option HSS restricts the maximum voltages from the 95x e The specifications for leakage current measurements when performing a DCez DCW or DCIR type step with a capacitive load have been significantly improved and settling is faster in these situations This yields more reliable low leakage or high leakage resistance measurements with capacitive loading o The user may wish to change the test step timing to make use of the improved settling performance otherwise no changes are needed e Added the capability of performing two DCW or DCIR ramp phases without any intermediate gap Previously the user could perform two DCW or DCIR steps using a discharge setting of NONE in the first step but there was always a dwell period in the first step which could unsettle a capacitive load during the overall ramp This revision also supports setting a zero dwell time for the first such step which eliminates the intermediate level dwell period o The user may wish to change the test step timing to make use
236. the GB type the GBez type is always set to test the RMS impedance Allows the user to define the impedance measurements to be checked against range limits The available selections are o RMS Selects that the impedance check is performed on the RMS impedance measurement o INPHS Selects that the impedance check is performed on the in phase i e resistance impedance measurement o QUAD Selects that the impedance check is performed on the quadrature i e reactance impedance measurement e Lim Allows the user to define ranges within which the selected impedance measurement is considered a PASS during the dwell period The range can be entered in units of impedance or voltage the UNIT key toggles the selection The user may optionally disable the lower limit by entering a zero value for it o In Phase and Quadrature measurements can be of either polarity the limits are applied to the measurement without regard to polarity e DISCHARGE Only available for the GB type Allows the user to program whether the discharge period should use the same timing as the ramp period AS RAMP be as fast as possible FAST or skipped NONE If NONE is selected but the next step is not of a GB type then the FAST selection is used when the sequence is run In the majority of cases FAST should be used e ONFAIL Allows the user to program the 95x to abort the entire sequence ABORT SEQ or only this step CONT SEQ if this step fails any of its che
237. to 30KV by means of an external unit PULSE TESTING OPTION This option may be fitted in a 951i 952i 953i or 954i not available with Option 500VA or a 957i not available with Opt AC 10 Option PMT 1 adds pulsed voltage testing DUT ISOLATION OPTION This option may be fitted in a 951i 952i or 956i Option HSS adds the ability to measure AC or DC breakdown and or leakage into a grounded DUT TERMINAL OPTION One or none of these options may be fitted in any 95x Option RPO 95 adds rear panel terminals in parallel with the front panel terminals Option RPOO 95 replaces the front panel terminals with rear panel terminals POWER INPUT OPTION Any of these options may be fitted in any 95x Option LOLINE changes the standard 105 245Vrms line voltage range to 80 125Vrms Option INRUSH reduces the power on inrush current at 230V line from over 100Apk to nominally 40Apk but limits the line voltage range to 200 245Vrms RACK MOUNTING OPTION This option may be fitted in any 95x Option RM 1 allows for standard 19 rack mounting of the 95x OUTPUT VOLTAGE CURRENT LIMITING OPTIONS The user may at the time of order specify that the DC and or AC Voltage generated by the 95x may be limited to a user specified voltage less than that normally available from the specific unit model but must be greater than 100V Similarly the user may specify that the Ground Bond current generated by a 952i 954i or 959i is limited to a user s
238. to hexadecimal 00 Bank 4 set to hexadecimal 00 Bank 3 set to hexadecimal 00 Bank 2 set to hexadecimal 00 Bank 1 set to hexadecimal 00 Bank 0 set to hexadecimal 00 SWITCH 9641 CONFIGURATION CONFIGURATION FIELDS Field Field Format Value 1 lt STRING gt SWITCH 2 lt NR3 gt Pre switch delay in seconds 3 lt NR3 gt Post switch delay in seconds 4 11 lt NR1 gt 964 1 Switch bank data banks 7 0 resp 12 19 lt NR1 gt 964 2 Switch bank data banks 7 0 resp only if configured for gt 1x964 20 27 lt NR1 gt 964 3 Switch bank data banks 7 0 resp only if configured for gt 2x964 28 35 lt NR1 gt 964 4 Switch bank data banks 7 0 resp only if configured for 4x964 Example Page 142 of 151 95x Series Operating Manual April 23 2015 ADD SWITCH 0 0 0 25 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 Configures the following in order A SWITCH type test step O second pre switch delay 0 25 second post switch delay Bank 7 set to hexadecimal 00 Bank 6 set to hexadecimal 00 Bank 5 set to hexadecimal 00 Bank 4 set to hexadecimal 00 Bank 3 set to hexadecimal 00 Bank 2 set to hexadecimal 00 Bank 1 set to hexadecimal 00 Bank 0 set to hexadecimal 00 TEST STEP STATUS FLAGS This is a lt NR1 gt value formed by the addition or logical OR of the values shown in the table below Note that a zero total value indicates that no failure occurred Bit Value Description
239. to the 95x are clean and are not loose If the connectors are left inserted into the sockets of the 95x front panel for an extended period of time e g a few weeks or more then they should be occasionally removed cleaned and re inserted into the 95x to prevent build up of corrosion on the connectors Page 77 of 151 95x Series Operating Manual April 23 2015 95x DUT Low Voltage Wire SENSE Low Voltage Wire 4 WIRE MEASUREMENT CONNECTIONS l When making 4 terminal measurements the resistance of the wires the contact resistance to the DUT and the contact resistance within the 95x front panel terminals are not included in the result the only recommendation is that the SOURCE and SOURCE wires be of sufficient gage to withstand the 50mA test current When wired as shown below the actual resistance measured is that between the innermost connection points to the DUT i e between the SENSE and SENSE connections If any wire has more than nominally 1000 of resistance then the test is failed with a WIRING FAULT condition 95x DUT SENSE SOURCE LEAD COMPENSATION 2 WIRE Performing a lead compensation for this type of test step compensates for lead resistance During a lead compensation the SENSE and SENSE wires should be solidly shorted together at the DUT end the 95x will then measure the lead resistance and automatically subtract it from all future measurements Page 78 of 151 95x Series Operating M
240. trix unit is being controlled by the 95x via the RS232 serial interface 964 VICLx1 A single VITREK 964i Switch Matrix unit is being controlled by the 95x via the VICL interface The 964i must be configured for VICL and set to address 1 964 VICLx2 Two ViTREK 964i Switch Matrix units are being controlled by the 95x via the VICL interface All 964i s must be configured for VICL and set to addresses 1 and 2 964 VICLx3 Three ViTREK 964i Switch Matrix units are being controlled by the 95x via the VICL interface All 964i s must be configured for VICL and set to addresses 1 2 and 3 964 VICLx4 Four ViTREK 964i Switch Matrix units are being controlled by the 95x via the VICL interface All 964i s must be configured for VICL and set to addresses 1 2 3 and 4 When finished press the EXIT key to exit this sub menu and then press EXIT again if no additional configuring is to be performed to exit the main configuration menu and save the settings NOTE the settings are not active until all menus have been exited Page 95 of 151 95x Series Operating Manual April 23 2015 CONNECTIONS Refers to the instructions received with the specific Switch Matrix unit s for details regarding connecting the terminals of the 95x to those of the Switch Matrix Units _RS232 INTERFACE l Using a RS232 cable supplied by ViTREK connect the RS232 port on the 95x rear panel to the RS232 Serial port of the ViTREK 948i or 964i The
241. tting is 5000V Ss o Ifthe DUT and cables connected to it have any significant capacitance then a significant portion of the test current may be consumed by the charging current In this case the DUT will be measured as having a considerably lower breakdown voltage than expected The user should consider using a lower maximum ramp rate setting in these circumstances e Lim This allows the user to define the range within which the breakdown voltage measurement is considered a PASS e ONFAIL This allows the user to program the 95x to abort the entire sequence ABORT SEQ or only this step CONT SEQ if this step fails any of its checks A safety related failure or a user abort STOP button always aborts the entire sequence CONNECTING TO THE DUT See Terminals and Wiring for general wiring and safety recommendations The 95x requires that the DUT at least that portion which is being measured is isolated from ground unless e Option HSS is fitted e And the DUT GROUNDED setting is set to YES TESTING A DUT WITHOUT OPTION HSS OR WITH DUT GROUNDED SET TO NO l The DUT should be wired between the HV and RETURN terminals of the 95x Page 74 of 151 95x Series Operating Manual April 23 2015 The 95x provides a safety ground termination for the DUT during the test via its RETURN terminal When deciding which point on the DUT to connect to the HV terminal and which point to connect to the RETURN terminal the user should consider that
242. u state Press the CNFG key The display now shows the main configuration menu an example of which is TEST PRINTOUT SYSTEM INTERFACES DIGITAL I O BUILD SET TO DEFAULTS LOCK PASSWORD 000000 RELOCK Using the Left Arrow or Right Arrow keys as needed change the selection point to the INTERFACES line Press the ENTER key The 95x now displays the base interfaces configuration settings menu an example of which is RS232 BAUD 115200 SWITCH NONE DISABLE USB NO DISABLE GPIB NO DISABLE ENET NO ETHERNET GPIB ADDR 2 Page 97 of 151 95x Series Operating Manual April 23 2015 e The user may navigate this sub menu and change the displayed settings as required The settings affecting using the RS232 to control the 95x are o DISABLE GPIB This must be set to NO to enable the GPIB interface in the 95x o GPIB ADDR This must be set to a chosen address for the 95x on the GPIB bus Addresses in the range 1 through 29 may be used if there is no other device on the bus at that address Software in the computer will need to be set to match this address in order for it to communicate with the 95x e When finished press the EXIT key to exit this sub menu and then press EXIT again if no additional configuring is to be performed to exit the main configuration menu and save the settings CONNECTIONS Using a standard GPIB cable connect the GPIB port on the 95x rear panel to the GPIB por
243. und leakage using the ACI type test step For this type of testing it is often also required to test the ground leakage of several exposed portions of the DUT as well as the ground connection of the DUT In those cases the same connection to the 95x would be used but the connection to the DUT would be to each required test point on the DUT This type of testing is often used for testing that the patient connections of a medical device meet ground leakage safety standards In these cases the DUT would be connected normally either with or without its power ground connection as required by the standard and each patient connection would be tested for ground leakage by connecting it to the 95x RETURN terminal LEAD COMPENSATION Lead Compensation is not usually performed on these types If needed then Lead Compensation can be used to reduce the effects of external leakage current When performing a lead compensation the ground leakage current limits are not enforced otherwise the test step is executed normally Page 88 of 151 95x Series Operating Manual April 23 2015 During a lead compensation the RETURN wire should not be connected to the DUT EXAMPLES Example 1 It is required to test that a DUT ground leakage from its chassis is less than 5mArms when line powered The DC leakage current is not required to be tested It is assumed that the connection is made prior to the start of the test This is accomplished in a single
244. unning test sequence is aborted If enabled and the INTERLOCK signal is inactive for gt 5ms then a test sequence is aborted if it is presently running an ACez ACW ACCAP ACI BRKDN DCez DCW DCIR DCI GBez GB or PULSE type step It has no effect on any other type of step or if a test sequence is not being run PASS FAIL AND TESTING SIGNALS AT THE END OF A TEST SEQUENCE Within lt 5ms after a test has completed the PASS FAIL and TESTING output signals are set by the 95x to the following states with lt 100us skew between them e PASS and FAIL one is made active and the other remains inactive depending on the status of the sequence e TESTING made inactive HV PRESENT AND DWELL OUTPUT SIGNALS These are asynchronous signals which indicate their respective conditions They do not have any relevant timing specifications EXAMPLES Example 1 It is desired to drive a TESTING IN PROGRESS warning indicator external to the 95x The indicator is illuminated when driven with 12Vdc and draws less than 100mA The indicator does not illuminate at a current of 3 2mA In this case the indicator may be driven directly from the 95x DIO TESTING signal and the 95x internal 12V power source from the DIO connector The indicator is simply wired between the DIO connector pin 1 12V and pin 14 Page 106 of 151 95x Series Operating Manual April 23 2015 TESTING and the TESTING output should be configured to be ACTIVE LO to c
245. using a standard CAT5 or CAT5e Ethernet cable and RJ45 connector When initially connected to the network the 95x display shows a message for 2 seconds detailing the actual speed and duplex used for the connection PRINTING FROM THE 95X USING THE USB INTERFACE SPECIFICATIONS Printer Class Printer must be a Printer USB Class device Printer Language PJL PCL HP USB Speed Full Speed Hub Not supported Many printers meet the requirements above ViTREK has tested the 95x with the HP OfficeJet Pro 8000 Series and the HP LaserJet 2420 The 95x is generally not compatible with multi purpose printers e g All in One types CONNECTING The printer should be connected to the 95x USB Host port using a standard USB cable of any suitable length The printer must be directly connected to the 95x a hub must not be used When the printer is initially plugged in to the 95x or when the printer is initially powered for some printers the 95x displays an informative message for 2 seconds detailing the status of the printer connection The user may also view the status of the connection to the printer at any time by using the following procedure e Ensure that the display indicates that the 95x is in the base menu state i e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base menu state e Press the CNFG key e The display now shows the main configuration menu an example of
246. uture runs Alternatively the user can run a Lead Compensation with an example DUT connected normally in which case the 95x will save the measured highest voltage and automatically adjust the output level in subsequent runs Both of these methods assume that the load resistance does not vary significantly with voltage ifthe resistance does vary significantly then the user may need to manually adjust the test voltage accordingly EXAMPLES A nominally 10Kohm NTC thermistor is to be tested for breakdown at 400Vpk The thermistor will only withstand 400V for a maximum of 100msec and will exhibit self heating very quickly This is accomplished in a single step as follows Seq 1 Step 1 PULSE LEVEL 400 0v As required POLARITY UNIPOLAR As required BREAKDOWN 100 0mApk Must be greater than the peak load current RAMP 1 0msec Performed as fast as possible the load has little capacitance HOLD 1 5msec Performed as fast as possible the load has little capacitance ARC DETECT 4us 10mA Optional ON FAIL ABORT SEQ The actual test voltage may not have achieved the required test voltage with sufficient accuracy When reviewing the results the actual test voltage is displayed as an example this may be 366V The user may adjust the programmed test voltage from the original 400V setting to 400 400 366 437V Then the next time the step is run the applied test voltage into this load will be closer to 400V Alternatively the user could run the test
247. will either fail the test if an arc is detected FAIL ON DETECT or not DETECT ONLY Note that arc detection is enabled or disabled by a separate user setting in each individual test step o CONTINUITY SENSE This allows the user to turn on off the Continuity Sense feature in certain types of test steps see the specific test step type sections of this manual for details o FAST RERUN This allows the 95x to always allow the user to rerun a test sequence without having to terminate reviewing the results ENABLED or only allow it if all tests passed IF PASS Page 32 of 151 95x Series Operating Manual April 23 2015 or never allow it DISABLED If fast rerun is not enabled the user must terminate reviewing results by using the STOP button before they can rerun the test sequence with the START button o USER MAX DCV This allows the user to set a maximum DC Voltage which the 95x will produce This limits all test steps subsequently defined and will not allow any existing test sequence containing a test step level outside of this limit to run Note the factory default setting for this is 10KV some models and options may allow a higher setting than this o USER MAX ACV This allows the user to set a maximum AC Voltage which the 95x will produce This limits all test steps subsequently defined and will not allow any existing test sequence containing a test step level outside of this limit to run Note the factory default setting for this
248. ws the user to select when the dwell period will be ended O PASS The dwell period will be immediately terminated with a PASS status if the leakage measurement is within limits continuously for at least 2 of the dwell period If the dwell period ends without this being detected then the pass fail status for leakage is based upon the final measurement taken at the end of the dwell period FAIL The dwell period will be immediately terminated with a FAIL status if the leakage measurement is outside of limits continuously for at least 2 of the dwell period If the dwell period ends then the test step will have a PASS status for leakage This selection produces similar results to the DCez and DCW types which terminate dwell immediately on a FAIL condition TIME The dwell period always extends for the entire programmed period The pass fail status for leakage is based upon the final measurement taken at the end of the dwell period STDY The dwell period will be automatically terminated when the leakage is within the allowable limits and the current is steady or decreasing i e steady or increasing resistance If the dwell period ends then the test step will have a FAIL status for leakage e Lim Allows the user to define the range within which the leakage current is considered a PASS during the dwell period The range can be entered in units of current or impedance for any type of test step the UNIT key toggles the selection For the i
249. y if applicable at the moment of the failure if FAIL or at the end of the dwell period if PASS The elapsed time in the period at the completion of the test step is shown in the lower left corner of the display The displayed measurement result can be changed by pressing the UNIT key This sequentially selects amongst the available results for the selected test step When reviewing results only those which have limits defined are available for review See Displayed Measurement Results for more details on available results The selected measurement result and the pass or fail result for that measurement is shown in the remainder of the lower portion of the display If the step contained a failure other than a simple checked measurement limit failure then a failure message is displayed instead By default the final measurement result is shown in the lower portion of the display This can be changed to the minimum MIN maximum MAX or average AVG value by selecting the elapsed time in the display using the Left Arrow or Right Arrow keys as needed then using the Up Arrow or Down Arrow keys to change the selection PRINTING A TEST RESULTS REPORT If the 95x has a suitable printer is connected to its USB port the user can configure the 95x to automatically print a test results report when a test sequence is completed and or the user can manually command the 95x to create a test results report See Printing from the 95x using the USB
250. ys enter a six character password If the password 000000 is set then this clears the password and disables menu locking Press the ENTER key If a non zero password was entered the display now shows a message indicating that the front panel is now locked and returns to the base menu state Otherwise a message is displayed indicating that the menu lock is now disabled and the 95x stays in the main configuration menu RELOCKING MENUS If the menu lock password has been set but the menus are presently unlocked i e they have been previously unlocked as described above then the user may relock the menus as follows Ensure that the display indicates that the 95x is in the base menu state i e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base menu state Press the CNFG key The display now shows the main configuration menu An example of which is as follows TEST PRINTOUT SYSTEM INTERFACES DIGITAL I O BUILD SET TO DEFAULTS LOCK PASSWORD 000000 RELOCK Using the Left Arrow or Right Arrow keys as needed change the selection point to the RELOCK line Press the ENTER key The display now shows a message indicating that the front panel is now locked and returns to the base menu state Page 27 of 151 95x Series Operating Manual April 23 2015 UNKNOWN MENU LOCK PASSWORD If the 95x menus have been locked but the password is unk
251. ys powers up with the menus locked UNLOCKING MENUS If the menu lock password has been set a user must enter this password to unlock a menu The user is prompted to enter the password when needed which is accomplished by using the O through 9 and A through F keys as needed to match the previously set password followed by the ENTER key After successfully entering the password the front panel menus remains unlocked until the menus are relocked by the user or the 95x is power cycled Note that the 95x display does not show the characters during unlock password entry for security reasons Page 26 of 151 95x Series Operating Manual April 23 2015 SETTING CHANGING OR CLEARING A MENU LOCK PASSWORD Ensure that the display indicates that the 95x is in the base menu state e the display shows the date and time If necessary press the STOP button to abort a menu and return to the base menu state Press the CNFG key If a password has been already set and the menus are not already unlocked the user must enter the correct password to unlock the menu at this point The display now shows the main configuration menu An example of which is as follows TEST PRINTOUT SYSTEM INTERFACES DIGITAL I O BUILD SET TO DEFAULTS LOCK PASSWORD 000000 RELOCK Using the Left Arrow or Right Arrow keys as needed change the selection point to the LOCK PASSWORD line Using the 0 through 9 keys and or the A through F ke

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