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1. XS series operating manual BEEP ON OFF This command is attached to the configuration function and controls the beep signal when the measurement result is false It is not possible to stop the beep signal completely For instance CONF DISP OFF DISP DISPlay ON OFF This command is attached to the configuration function and controls the display mode For instance CONF DISP OFF expert EXP EXPert ON OFF Set the EXPERT mode ON or OFF MOD MODe AUT MAN This command is attached to the setup function It switches the mode AUTO and MANUAL of the sequence function only with the family units of SMG and FMG SBS Step By Step ON OFF This command takes part of sequence function of the SMG and FMG It fixes on the way of the test results are send back to the controller RS232 IEEE In ON mode the result of every steps of test is transmitted as soon as available without any request before no MEAS In OFF mode all the results are transmitted together at the end of the sequence in answer to the command MEAS IMPORTANT After power on the mode SBS is automatically set with OFF value TIM TIMe AUT FAIL UDIV2 Select the temporization mode AUT for automatic FAIL for default and UDIV2 for U divided by 2 The UDIV2 mode concerns the hipot function The FAIL mode concerns the ground continuity function and the hipot 500VA function only FILT FIiLTer NOR CAP RHT Enables the normal or the capacitor or the Real Hold Time measu
2. The UP and DOWN keys increase or decrease the parameter values and the LEFT and RIGHT keys move the cursor on the position to be modified The CENTRAL key enters the new parameter value Sefelec 25 XS series operating manual Liquid Crystal Display LCD description The unit is fitted with a liquid crystal display LCD of 64 points per 240 points used in a graphic mode According to the position of the user related to the unit screen and the light conditions it is possible to adjust the screen contrast by turning the potentiometer located on the rear panel Z9 The screen is LED back lighted this allowing the use of the unit even the light conditions are poor The screen is divided in 5 areas arranged as follows Z2 Z4 Z5 fig 5 2 a Z1 Help messages in normal video mode or error messages in reverse video mode 72 Display of the measurement results with big characters 18 mm x 12 mm In the input parameters mode display of test parameters for possible changes a Z3 Recall of the measurement parameters a Z4 Symbol recalling the selected test MQ KQ mi li a Z5 Indicates the name of the function keys on the right side of the LCD display Sefelec 26 XS series operating manual Rear panel description dp U d CONTROL SECURITE COMMANDE FMG CH ETHERNET Jl CONTROL TELECOMMANDE e POWER LINE SECTEUR fig 5 3 The rear panel includes the following areas Z8 Mains power input conn
3. XS series operating manual 6 Unit configuration After switching on or returning to the initialization menu press the SETUP function key of the Z4 area Then the LCD screen displays as follows ENGLISH ino NORMAL UNLOCKED With the control keypad With the UP and DOWN arrow keys move the reverse video line and go into modification mode by pressing on the RIGHT arrow key or on the ENTER key key at the center of the control keyboard Scroll the possible selections with the UP and DOWN arrow keys and then enter the choice with the validation key Language selection All the messages on the LCD screen can be displayed in several languages French English German and Spanish Display the required language with the UP DOWN arrows and then enter The unit goes back to its initialization menu BEEP ON FALLI FILTER PARAM ACCESS lt PAGE 1 gt Sefelec 33 XS series operating manual Beep on FAIL configuration When a test result is failed a permanent audible signal is emitted by the unit until the removal by pressing on the DISCHARGE key This function is active when YES is selected and not active when NO is selected The choice is memorized after switching off the unit Filtering configuration for capacitive specimen The FILTER function select a special operating mode of the unit when testing on capacitors or on specimens with a certain among of capacitance cables Display the requir
4. fig 8 3 Select the number to be modified by moving the cursor with the RIGHT LEFT arrow keys Increase or decrease the value with respectively the UP and the DOWN arrow keys 012345678 9 01 23 etc Repeat operation for all the numbers if necessary With the RIGHT arrow key move the cursor up to the unity zone Scroll AC DC for XS56 and 506 models with the UP DOWN arrow keys Enter the voltage with the ENTER key If the value is higher than the maximum limits 5 00 in AC and 6 00 in DC following error message appears LIMIT ERROR Enter a correct value or ESC Sefelec 49 XS series operating manual Test voltage application on the specimen The sudden application of the test voltage on a specimen can stressed it more than required Therefore the unit is fitted with a voltage rise time system The same phenomena existing during the cut off of the high voltage the unit can perform the following test cycle Ov mont e maintien descente temps Uessai REMINDER with DC voltage the voltage is negative To set the HOLD time Move the reverse video line in front of the HOLD line Press on the RIGHT arrow or ENTER key Display shows fig 8 4 Select the number to be modified by moving the cursor with the RIGHT LEFT arrow keys Increase or decrease the value with respectively the UP and the DOWN arrow keys 012345678 9 0123 etc Repeat operation for all the numbers if necessary Enter the time with
5. 9 0123 etc Repeat operation for all the numbers if necessary e With the RIGHT arrow key move the cursor up to the unity zone e Scroll the unity KQ 1 000 ohms MQ 1 000 000 ohms GQ 1 000 000 000 ohms TQ 1 000 000 000 000 ohms Enter the threshold with the ENTER key WARNING the HI LIMIT must be always higher than the LO LIMIT otherwise an error message is displayed HI LIMIT lt LO LIMIT e To set the LO LIMIT value proceeds the same way as for the HI LIMIT WARNING the LO LIMIT must be always lower than the HI LIMIT otherwise an error message is displayed LO LIMIT gt HI LIMIT Timer operation The unit is equipped with a timer to define the insulation resistance measurement time from 1 up to 999 seconds This feature is particularly interesting when measuring on capacitive specimens of which the insulation resistance increases as a function of the measurement time At the end of the test time the unit automatically stops the test and memorizes the last measured value on the LCD screen In case where a test time is set to 0 the unit remains in the measurement mode permanently until the DISCHARGE key is pressed Sefelec 43 XS series operating manual To adjust the hold time Move the reverse video line in front of the HOLD line Press on the RIGHT arrow or ENTER key Display shows WOLTAGE HI LIMIT LO LIMIT HOLD el lt PAGE 51 gt fig 7 5 Select the number to be modified by moving the
6. Rise and fall times are adjustable in time second or in voltage increase dv dt from 0 1 to 0 9sec and from 1 to 999 sec or in V s from 1V s to 1000V s Sefelec 20 XS series operating manual 4 Ground continuity function Measurement current e From 5 to 30A AC by step of 0 5 A AC e Frequency mains frequency e Accuracy 1 500mA Open circuit voltage e lt 6 VAC or lt 12 VAC e Sinus wave e Frequency identical to the mains Measurement accuracy e Display on 1500 points digital indicator with unity indications mQ e Accuracy in of the reading 1U 1 display count 1mQ 2 5 10U in the following measurement range 30 20 10 gt JS EC OC 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 SHUNT mOhms Sous 6V Sous 12 V Sefelec 21 XS series operating manual Measurement thresholds The ground continuity function can operate either with one or two measurement threshold s between 1mQ to 1500mQ A measurement is PASS after comparison between the displayed value and the thresholds When looking for a value only lower than a limit the HIGH THRESHOLD is used to set the limit and the LOW THRESHOLD is not used by setting a value equal to the minimum resistance basically OMA When looking for a ground continuity resistance lower than a limit but not too much low which can means that the specimen is not correctly connected then
7. Sefelec field2 Unit reference CMG30 DMG50 DMG500 RMG50 MMG500 SMG50 field3 Serial number 0 not used field4 Software revision VERSION 1 60 NOTE the IDN command must be used before selecting a function from the start display Sefelec 103 XS series operating manual TST Allows to check that the unit is correctly working The message is as follows H lt NR1 gt with WEE result H01 H02 H04 Leakage missing H08 With X 0or1 NOTE the TST command must be used before selecting a function from the start display Device commands MEG MEGohmmeter Selects the megohmmeter Must be sent from the initialization display HIP HIPot Selects the hipot tester Must be sent from the initialization display LEAK LEAKage Selecs the leakage function Must be sent from the initialization display GND GrouND Selects ground continuity function Must be sent from the initialization display SEQ SEQuence Selects the sequence function Must be sent from the initialization display CONF CONFig Selects the configuration function of the unit Must be sent from the initialization display PAR PARameter lt NR1 gt Selects the parameter set for the running function For instance MEG PAR 1 DCV DCVoltage lt NR1 gt Sets a new value in volt to the current DC voltage parameter to the parameter set of the running function For instance DCV 500 ACV ACVolt
8. Software revision Measurement display NO second page of the setup menu Interface PLC Rise time 0 Fall time 0 Hold time 1 Time AUTO Other parameters independent e Test time time between change of the MES_DCH start test signal and change of EOT end of test signal 980 mS e Measurement parameters same as above but with hold time 0 Test time 700 mS In this case there is no output voltage control e Measurement parameters memory number change between each measurement Test time basic minimum test time 1 3 S Minimum cycle timing in MEGOHMMETER Measurement conditions Software revision Measurement display NO second page of the setup menu Interface PLC Measurement time 0 Other parameters independent e Test time time between change of the MES_DCH start test signal and change of EOT end of test signal 1 58 S e Measurement parameters memory number change between each measurement Test time basic minimum test time 1 3 S Minimum cycle timing in GROUND CONTINUITY Measurement conditions Software revision Measurement display NO second page of the setup menu Interface PLC Rise time 0 Fall time 0 Hold time 1 Time AUTO e Test time time between change of the MES_DCH start test signal and change of EOT end of test signal 1 19 S e Measurement parameters
9. The L LIMIT defines the minimum resistance value in Ohms or Volts that can be reached by the specimen under test A specimen is good PASS if the resistance is under H LIMIT and over L LIMIT otherwise the specimen is declared bad FAIL Those thresholds are adjustable from 0 to 1500mQ or 0 01V to 12 0V e Move the reverse video line in front of the H LIMIT line e Press on the RIGHT arrow or ENTER key e Display shows LURRENT HI LIMIT LO LINIT WOL TAGE PAGE SIS fig 9 5 e Select the number to be modified by moving the cursor with the RIGHT LEFT arrow keys e Increase or decrease the value with respectively the UP and the DOWN arrow keys 012345 6789 012 e Enter the threshold with the ENTER key Warning the H LIMIT must always be higher than the L LIMIT otherwise an error message is displayed H LIMIT lt L LIMIT e To set the L LIMIT value proceed the same way as for the H LIMIT Warning the L LIMIT must always be lower than the H LIMIT otherwise an error message is displayed L LIMIT gt H LIMIT e f you whish to modify the unity for instance switch from Ohm to Volt use the right arrow as much times as you need to place the unity on reverse video Then change it with UP and DOWN arrows Warning when changing the unity ohm to volt you must enter again the two thresholds Sefelec 65 XS series operating manual Timer operation The sudden application of the test current on a specimen can stress
10. from 0 to 10 VDC Output impedance 1 kohm 5 Input impedance 10 kohms 5 Insulation Not insulated the ground is earthed Connection screw terminal connector C6 on the rear panel 0 10 volts input or output 0 10 volts output Ground Board setup according to the unit models The board includes some jumpers described on the schematic underneath These jumpers allow setup the board in a 2 analog outputs mode or in a 1 analog output 1 analog input mode fig 12 2 Sefelec 92 XS series operating manual configurations MEGOHMMETER 1 output for the linear value of the resistance in a range 1 output for the value of the range SW5 4 operate the 0 10V feature MEGOHMMETER 1 output for the logarithmic value of the resistance 1 output not used DIELECTRIC STRENGTH TEST 1 output for the high voltage value 1 output for the leakage current DIELECTRIC STRENGTH TEST 1 output for the high voltage value 1 input for the high voltage Sefelec 93 XS series operating manual Change of the board setup IMPORTANT the change of the board setup must be performed by skill people How to proceed v Remove the power cord v Remove the screws securing the dark blue cover v Push the dark blue cover backward to access to the boards remove the earth wire if necessary v Unscrew the board locking nut v Pull the board out v Set the jumpers as described here above v Plug the board v Lock t
11. memory number change between each measurement Test time basic minimum test time 1 3 S Sefelec 87 XS series operating manual CTRLIN TYPE YA N SAL N1 SSS N2 ce N3 SAA MES_DCH CTRLOUT PLCPASS W222 IYI PLCFAIL ZE LI EOT Femme ERROR SEN Diagram n 2 Test example test with megohmmeter function on DXS models Memory 5 Test failed Sefelec 88 XS series operating manual CTRLIN TYPE MAAR AL N Vb N1 Wiis Ne SAA N3 SA MES_DCH CTRLOUT PLCPASS WY PLCFAIL YYZ EOT S quence ERROR en Diagram n3 Test example with hipot test function on SXS models Memory 3 Test passed Sefelec 89 XS series operating manual PLC SYSTEM XS UNIT Diagram n 4 PLC connection with external 25VDC power supply Sefelec 90 XS series operating manual PLC SYSTEM XS UNIT PASS ERROR Diagram n5 PLC connection with internal 25VDC power supply Sefelec 91 XS series operating manual 0 10 Volts analog input output 03 OPTION This option allows the unit to deliver a proportional analog voltage to the displayed measurements on the LCD screen insulation resistance test voltages leakage currents and allows controlling the dielectric strength test high voltage by an analog voltage between 0 and 10 volts Jumpers for the setup of the board allow selecting different features Specification Output voltage from 0 to 10 VDC by 2 44 mV steps Input voltage
12. the unit goes back to Local mode send a REM command before any following commands Sefelec 102 XS series operating manual Common queries STB return in hexadecimal format a lt NR1 gt which is the value of STB i e H80 O o 0 Interlock opened 1 Interlock closed 0 No error 1 Error voltage not correct 1 Test running 0 Test fail 1 Test pass D Logical OR of the STBregisterbits S SRE return in hexadecimal format a lt NR1 gt which is the value of SRE STB register mask ESR return in hexadecimal format a lt NR1 gt which is the value of ESR bO b3 Not used b4 1 Dialog error type 2 Numerical value out of range out of context command b5 1 Dialog error type 1 incorrect command b6 Not used b7 1 power on NOTE the bits are reset after the reading of the byte by the ESR command ESE return in hexadecimal format a lt NR1 gt which is the value of ESE ESR register mask LRN This device query allows the programmer to receive a response message unit that informs the programmer on the current device state function s running and current test parameters and may be later used as program message unit elements to place the device in the state it was IDN Allows the identification of the unit The message is as follows lt field1 gt lt field2 gt lt field3 gt lt field4 gt field1 Manufacturer name
13. Hipot the following message is displayed INPUT ERROR and the REMOTE TRIG mode is automatically removed Please refer to the above procedure to select correctly the REMOTE TRIG mode Interface selection The XS series units can be remote controlled by the following interfaces RS232 IEEE 488 GPIB ETHERNET et par interface API At the same time only one interface can be selected If an interface is not installed in the unit its selection displays an error message OPTION MISSING For more details about those interface capability please refer to the related section of this manual Sequence selection Option 04 For DXS models only if the option 04 is installed this function allows to to perform automatic cycling of the megohm and dielectric strength functions Display on the LCD screen the various sequence modes with the UP and DOWN arrows OFF M H H M M H M The M letter shows an insulation resistance measurement and the H letter shows a dielectric strength test Operating the sequence mode is recalled in the measurement windows by the following drawing symbol In a M H sequence the unit performs first an insulation test and then a dielectric test It is necessary to set the parameters specially the test times before running a sequence In case of a fault during the test the sequence is stopped When operating in sequence mode at power on the first sequence function type is automatically selected When atte
14. defined by three consecutive times during which the output voltage rises linearly up to the preset value RISE time then is hold to the preset value HOLD time and finally bring back to zero FALL time The RISE and FALL times can be set from 0 to 1 sec by 0 1 sec step and from 1 to 999 sec by 1 sec step The HOLD time can be set from 1 to 999sec by 1 sec step Sefelec 16 XS series operating manual 3 Megohmmeter function insulation resistance measurement 500V megohmmeter function Measurement voltage Voltage adjustable from 10V to 500VDC by 1 volt step Accuracy 1 1V Positive pole of the HV generator is grounded earth Dynamic stability fora mains AV 10 gt 1 The maximum current in the measurement circuit is 2 mA 20 The discharge current is limited by a 2 2 KQ resistor Measurement range Display 2000 digits The measurement range is defined by the following formula Utest Umax generator x 200 GQ or 2TQ according to the option This gives the following board for the 50 100 250 500VDC standard voltages 200GQ basic version 50kQ to 20GQ 100V 100kQ to 40GQ 250V 250kQ to 100GQ 500V 500kQ to 200GQ Measurement accuracy 2TQ option version 50kQ to 200GQ 100V 100k to 400GQ 250V 250kQ to 1TQ 500V 500kQ to 2TQ 2000 digits numeric display with unity indication KQ MQ GO TQ Accuracy of the reading 1U 1 digit DXS and SXS models 20
15. including a megohmmeter and the SXS50 56 and SXS500 506 include all the above functions plus a ground continuity function The XS series makes possible to perform insulation resistance measurement ground continuity resistance measurement and dielectric strength test on a various number of insulating material as resin porcelain oil plastic as well as on final products such as capacitors transformers switches cables connectors or on devices connected to the main or supplied by batteries The instruments allow ground continuity measurement fitting most part of the existing standards regarding measuring and medical fields office devices machinery The XS series is fitted with a high resolution liquid crystal display LCD and a keyboard allowing an easy use A single output for the dielectric strength tests and the insulation resistance measurements makes easy the connection on the specimens Red and green LED lamps indicate visually and without any confusion the tests results The dielectric strength tests are performed under adjustable voltages from 100 VAC up to 5000 VAC up to 6000 VDC for the XS56 and XS506 models with a short circuit current of 10 mA for 50VA models and 200 mA for 500VA models The breakdown voltages and currents are memorized on the display after breakdown detection and voltage cut off The insulation resistance measurements are performed under voltages from 10 up to 500VDC 20 to 1000VDC with option 26 The XS un
16. interface This option makes possible the integration of any unit of the series in an automatic measurement or test system in manufacturing or incoming inspection department This interface is accessible through a connector provided on the rear panel Syntax rules The end of a message must be the LF character hexadecimal OA decimal 10 The separators inside a message are or The commands can be sent either in small letters or in capital letters The maximum number of commands by message is 15 NOTE be careful not to put together standardised commands with other ones When a event like transmission error end of test safety loop open occurs during the measurement the controller could be informed by a SRQ To activate this function you must send a SRQ command just after the initialization of the unit On event you could read the internal registers of the IEEE controler STB SRE to get more precise reasons why If the message is not recognized by the unit the error message lt DIALOG ERROR 1 gt is displayed If the code is out of context the error message DIALOG ERROR 2 gt is displayed special code for a function when the function was not selected or numerical value out of range IEEE 488 1 Fonctions availables SH1 AH1 T6 L4 SR1 RL1 PP0 DC1 DT0 CO List of the IEEE 488 commands The syntax of the commands complies with the IEEE488 2 standard 1992 revision IEEE488 2 numerical formats Format NR1 l
17. of the Safety function of the tested connection Beyond the ohm value evaluation it is mandatory to test the quality of the connection to the earth potential diameter of the wire solders quality screwing quality A manufacturing fault of one of these connections may in certain circumstances give an immediate correct ohm value but increasing quickly by heating causes by the high current value used for the test this high current can produce a break of the wire wounded wire which diameter becomes too small This is why some standards are requiring a minimum test time from 1 to 5 minutes for this measurement Other standards don t give any time indication but it is advised to apply for type test a minimum time of 1 minute and for series tests at least 10 seconds Sefelec 119 XS series operating manual Precautions to be observed The measured resistance values being very low lt 1 ohm it is necessary to perform the measurement in using the 4 wire method to avoid the measurement lead parasitic resistance interfaces adapters It is necessary to warrant this measurement principle when connecting the measurement unit to the test points If specific connections have to be done it is necessary to use correctly rated cables at least 5A mm for the current and to connect voltage measurement cables as close as possible to the measured points During the test time it is advised not to move the probe to avoid break
18. tank is grounded The insulation resistance measurement unit must be able to measure a specimen with one grounded end The units of the MG series allow performing easily this type of measurement because the hot point of the high voltage generator is already grounded You just have to connect the measurement input of the unit with the HV probe on the cable to be measured and to trigger the measurement B Another specific point when measuring on cables is that the specifications of the cable manufacturers give resistance values for a standard length of cable equal to 1 km 1000 meters When testing the reels of cable those are never equal to the standard length that forces the operators to calculate the resistance as a function of the cable length and the number of wires in parallel for the multi wires cables Consequently the built in comparators of the measurement units can not be used because they compare regarding to the total insulation value and not regarding the standard value The units of the MG series allow with the option 23 to display insulation resistance measurements reduced to 1 km and 1 wire and therefore allow the use of the built in comparators The operator can enter in a specific menu of the unit the length of the cable under test as well as the number of wires The result is given in Mohm per km i e the unit measures a value of 10 Mohms for a 10 km long mono wire cable Therefore the value reduced to 1 km will be R
19. the ENTER key Sefelec 50 XS series operating manual To set the RISE and FALL times Move the reverse video line in front of the RISE or FALL line Press on the RIGHT arrow or ENTER key Display shows JOLTAGE HOLD FALL PAGE 13 fig 8 5 Select the number to be modified by moving the cursor with the RIGHT LEFT arrow keys Increase or decrease the value with respectively the UP and the DOWN arrow keys 012345678 9 0123 etc Repeat operation for all the numbers if necessary Enter the time with the ENTER key If necessary move the cursor on the unity area and scroll the items with the UP and DOWN arrows and then enter with the ENTER key REMINDER The RISE and FALL times are adjustable from 0 to 1 sec by 0 1 sec Steps and from 1 to 999 sec by 1 sec Step Sefelec 51 XS series operating manual Breakdown detection mode selection DETECT _ s A aes UH LIMIT 1 00 mA I IMIN LIMIT 0 00 mA A AT LIMIT w KV lt PAGE 2 gt fig 8 6 It is possible to select various breakdown detection mode Current variation mode Al The ATEST detector automatically carries out the subtraction between the current which flows normally in the device under test I U Z and the one which occurs at the time of a fault I I Ifault Maximum current limit IMAX The unit monitors permanently the current flowing through the sample under test and compares according the 2 following possibilities The high
20. the LOW THRESHOLD is set the minimum continuity value expected and the HIGH THRESHOLD is set to the maximum continuity value expected Setting examples LOW limit Measure HIGH limit Test result 0 mQ 98 0 mQ 100 mQ PASS continuity lt High limit 0 mQ 120 mQ 100 mQ FAIL continuity gt High limit 55 mQ 63 2 MQ 80 MQ PASS continuity gt Low limit and lt High limit 45 MQ 10 mQ 75 MQ FAIL continuity lt Low limit threshold not active Timer The measurement voltage can stay permanently timer value set to 0 sec or during a time between 1 and 999 sec adjustable by 1 sec step Rise and fall times are adjustable in time second or in voltage increase dv dt from 0 1 to 0 9 sec and from 1 to 999 sec or in V s from 1V s to 1000V s Measurement cycles If the current generated is high 25A it can lead to a current overheating of the transformer and start up its protection See Section 5 3 The hereunder board indicates the maximum operating time of the ground continuity resistance measurement according to the use cycle 1 2 cycle represents use of the current during one second for a total duration of the cycle of 2 seconds Note All these duration concern a 30A current For lower currents this duration is higher time Sefelec 22 XS series operating manual 5 INTRODUCTION OPERATING INSTRUCTION WARNING This unit must be used by qualified people Every preca
21. the temperature with a possible stop of the HV generator for safety reasons Sefelec 15 XS series operating manual Permanent current measurement e Direct reading of the current on a shunt resistance in the test circuit e Display of the value on a 999 points digital indicator e Accuracy 2 5 2 U of the read value 1U 0 1mA In VDC accuracy is given for resistance loads gt 1 MQ e Display of STRONG CURRENT message as well as MA when the current is over 110mA AC current and 20mA in DC e The current indicated on the display in DC is the rms current That is to say laff N Tac Tac Fault indication By message on the LCD display red and green LED and audible signal possibility to inhibit Memory storage of the breakdown voltage Memory storage of the leakage current in IMAX mode Cut off of the high voltage at the first zero crossing of the control sinusoidal signal of the HV transformer thus without over voltage Timer mode MANUAL The timer is not used during the test The voltage output is manually controlled by pressing on the UP DOWN arrows The test stops when a breakdown occurs or when pressing on the red push button on the front panel mode DEFAULT The timer is not used during the test The voltage output is defined in the parameter VOLTAGE line The test stops when a breakdown occurs or when pressing on the red push button on the front panel mode AUTO The test is
22. value with respectively the UP and the DOWN arrow keys 012345678 9 0123 etc Repeat operation for all the numbers if necessary Measurement threshold selection The unit includes 2 comparison thresholds making possible to check if the specimen under test is PASS or FAIL The HI LIMIT defines the maximum insulation resistance value for the specimen in order to detect a possible bad connection of the test probes on the specimen The LO LIMIT defines the minimum insulation resistance value that must be reached by the specimen under test A specimen is good PASS if its insulation resistance value is lt HI LIMIT and gt LO LIMIT otherwise the specimen is declared bad FAIL In the basic version of the unit the thresholds are adjustable from 0 kQ up to 200 0 GQ A HI LIMIT set to 200 0 GQ cancels the comparison to the high threshold in that case the value of the high threshold is not displayed on the parameters line of the figure 10 When a value above 200GQ or 2TQ according to the option is entered the message LIMIT ERROR is displayed Move the reverse video line in front of the HI LIMIT line Press on the RIGHT arrow or ENTER key Sefelec 42 XS series operating manual Display shows WOLTAGE HI LIMIT LO LIMIT HOLD PAGE 1 gt fig 7 4 Select the number to be modified by moving the cursor with the RIGHT LEFT arrow keys Increase or decrease the value with respectively the UP and the DOWN arrow keys 012345678
23. 0 SXS50 6000VDC 200VA RXS500 DXS500 SXS500 insulation resistance measurement up to 2 TQ DXS50 DXS500 SXS50 SXS500 insulation resistance measurement display in MQ x km DXS50 SXS50 SXS500 ETHERNET interface ETHERNET IEEE 488 interfaces insulation resistance measurement with voltage from 20VDC up to 1000VDC technical manual with schematics calibration kit for hipot AC DC 50VA function calibration kit for hipot AC DC 500VA function calibration kit for insulation resistance function calibration kit for ground continuity function SXSPro software to remote control XS series unit 28 XS series operating manual Installation Preliminary instructions Warning This unit must be used by qualified people Every precaution for the use of units connected to the main must be taken during its use In particular this unit must be connected to earth The specifications of this manual the correct operation of the unit as well as the operator s security are guaranteed only when the supplied accessories TE54 TE56 CO175 CO183 C0184 are used The measurement probes can include limitation or protective elements therefore it is forbidden to modify without written agreement from SEFELEC company In case of use under other conditions than the one specified in this manual the security of the user will be in danger This unit can supply voltages and currents which could be lethal Comply with the safety regulations
24. 0 GQ basic version 1 5 1U 2 TQ option and U lt 200VDC 2 1U 2 TQ option and U gt 200VDC 1 x Utest 100 1U Sefelec 17 XS series operating manual CAPACITANCE mode from 1 00MQ to 200GQ or 2 TQ for option 20 with an accuracy equal to the NORMAL mode accuracy 100kQ Input impedance 10 MQ 1 Measurement threshold The megohmmeter function can operate either with one or two measurement threshold s between 50kQ up to 200GQ 2TQ with option 20 A measurement is PASS after comparison between the displayed value and the thresholds When looking for a value only higher than a limit the LOW THRESHOLD is used to set the limit and the HIGH THRESHOLD is not used by setting a value equal to the maximum resistance basically 200GQ When looking for an insulation resistance higher than a limit but not too much high which can means that the specimen is not correctly connected then the LOW THRESHOLD is set the minimum insulation value expected and the HIGH THRESHOLD is set to the maximum insulation value expected Setting examples LOW MEASURED HIGH Result THRESHOLD value THRESHOLD 10 MQ 15 4 MQ 200 GQ PASS insulation gt LOW limit 10 MQ 9 0 MQ 100 MQ FAIL insulation lt LOW limit 55 MQ 63 2 MQ 80 MQ PASS insulation gt LOW limit lt HIGH limit 45 MQ 110 GQ 75 MQ FAIL insulation gt HIGH limit threshold not active Timer The me
25. 23 etc Repeat operation for all the numbers if necessary Enter the threshold with the ENTER key Sefelec 55 XS series operating manual Timer operation There are four possible ways to use the unit timer AUTO DEFAULT MANUAL and U 2 mode AUTO Ov mont e maintien descente In the AUTO mode the output voltage follows the above diagram with rise hold and fall time During the HOLD time the output voltage on the specimen under test is adjusted to the preset value mode DEFAULT After test start the unit will stop the test only if there is a breakdown detection or if the operator press on the red discharge push button Rise and fall time are not used During the HOLD time the output voltage on the specimen under test is adjusted to the preset value mode MANUAL The operator can adjust continuously the output voltage with the UP and DOWN arrow keys Automatic increase or decrease is provided in keeping the arrow key pressed more than 1 sec mode U 2 Operate as in AUTO mode but start the output voltage not from 0 but from the test voltage divided by2 To select the timer operation mode HIPOT menu page 3 Select the TIME line Press on the RIGHT arrow key or on ENTER The display shows DETECT RAMP fig 8 10 Scroll the timer operation modes with the UP and DOWN arrow keys and then ENTER the selected mode Sefelec 56 XS series operating manual Parameter memorization XS series unit a
26. ARGE button to clear the screen and escape the sequence mode with ESC key WARNING Pressing on DISCHARGE button clears the screen and therefore the test results Sefelec 75 XS series operating manual Sequence with manual control It is possible to control manually the sequence see SETUP menu line SEQUENCE MANUAL In our example The unit performs the first function Megohm 3 then it stays in standby mode and displays L1 Ms a WAITING fig 10 11 The unit waits for the operator pressing on the ENTER key Multiple ground continuity According to the specimen under test it may be necessary to perform several ground continuity measurements on several measurement points This feature is called Multiple ground continuity and it is displayed as follows GROUND O POLNTS 2 WOLD VOID lt PAGE 1 gt fig 10 12 In the above example the operator has to test with the same parameters consecutively 2 ground points The minimum number of ground continuity test points is 2 and the maximum is 99 Sefelec 76 XS series operating manual Multiple ground continuity operation With the above example after starting the test the LCD screen shows STRIKE ON ENTER 1 GO WAITING Z STEP fig 10 13 The unit waits that the operator press on the ENTER key or press on the remote control bush button on the test probe if featured to start the ground continuity test step STEP 1 Then the first step is proceedi
27. Board setup according to the unit mocdels eee cece eeeeenee eee e eee eeeeeeeeaaeeeeeeeeeeeeeeeeneneeeeeeeees 92 ee elle 93 Change or theDOarG SCP cscs ees cts tve ceeds a aaea aa a aeaa aaa aA aa eiaa aa eter caret aAa iit 94 Operatora E 94 Megohmmeter mode 2 outputs setup ccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaaeeeeeeeeeeeteeeeneneeeeeeess 95 Megohmmeter mode 1 output setup ENEE 95 Dielectric strength test mode 2 outputs setup EE 96 Dielectric strength test mode 1 output 1 input Setup 96 leegen 97 IPE 4S ln Le 98 Syntax HE 98 IEEE 488 1 Fonctions availables A 98 List of the IEEE 488 commands ee eer 98 UE 100 S ntax rules aces EES 101 List of the RS232C commande cette ee eeeeeeeaaeeeeeeeeeeeeeeeeaaeeeeeeeeeeeseeeeeeneeeeeeee 102 Advices and programming exemples ssssesssetnrteeessetntttrrtteserrrrtnnnnnnnseerrnnnnnnnnneee nnna 111 Trouble shooting the RS232 mtertace ee 112 TS APPEICATION nh 113 WHY DIELECTRIC EE 113 Sefelec 8 XS series operating manual GLOSSARY COP MER IWS EE 113 ENVIRONMENTAL INFLUENCES tee EES 114 INSULATION RESISTANCE MEASUREMEN T sssaasssssossnnsessrnnesrnrrnenrrrrenrrrreenrrrreesrrrreserrrree 114 PRECAUTIONS TOBEORBGERVED 115 MEASUREMENTS OF CAPACTTORS 115 MEASUREMENTS ON CABLES aoisnnsenennnsesrnnresnrrrresrrrrresrrrrrrsrrrrresrrrrresrrrresrrrrrenerrreeernnt 116 MEASUREMENT VOLTAGE GELECTION 116 DIELECTRIC STRENGTH TEST Sitincaicsessncdsdssacsostesansdccasnnebhccaeesidenas
28. ESSORIES OR TO THE OPTIONS Ground continuity measurement a C0O184 3 to CO184 10 Maximum current regulation 10A for 6V 20A for 12V a C0O183 3 to CO183 10 Maximum current regulation 10A for 6V 20A for 12V a TE66 3 to TE66 10 Maximum current regulation 10A for 6V 20A for 12V a TE80 3 to TE80 10 Maximum current regulation 10A for 6V 20A for 12V a TE81 3 to TE81 10 Maximum current regulation 10A for 6V 20A for 12V a CSi Maximum current regulation 10A for 6V 20A for 12V Hipot test a C0193 CO174 CO185 CO0192 4000VAC limited max voltage a C0200 to C0209 A000VAC limited max voltage a FMG501 4200VAC limited max voltage Insulation measurement a CO 210 Measurement limited to 2GO a FMG501 rack and Option MG 55 or MG 57 three phase Measurement limited to 2GQ Sefelec 4 XS series operating manual Summary This manual is written for the following XS series model 2 WV RING ee EE 3 RESTRICTIONS DUE TO THE ACCESSORIES OR TO THE OPTIONS noensinne 4 Ground Continuity measurement EE 4 elle EE 4 Insulation measurement EE 4 SO UIMIMANY EE 5 lee le EE 10 Power EISE 10 EENHEETEN 10 Weight and dimensions EE 10 Overvoltage EE 10 Elte EEN 10 e 10 1 DIELECTRIC STRENGTH TEST BOVA 11 SE SOVA Eeer 11 CUTE WON E 11 VONAGE TEACING EE 11 SOM CHCUNCUEFERL Zeg 11 Breakdown detection EE 11 Current variation MODS IA EEN 11 Maximum current limit IMAX EE 12 Fast maximum current limit F ast IMAX
29. EXPERT mode Activation VERSION lt PAGE 13 gt fig 6 11 The EXPERT mode gives additional controls for function such as the dielectric strength test breakdown detection mode and breakdown threshold values during the rise time This mode is only for skill operators Any information related to this operating mode is indicated with this label expert Sefelec 40 XS series operating manual 7 Insulation resistance measurement Press on the MEGOHM function key if displayed or from the initialization menu press on FUNCTION then MEGOHM The main test parameters are recalled on the bottom line of the LCD screen MEM D OHM EI MQ ta J50 L 19 Di TE EI 5 ESC fig 7 1 Parameter setting Press on the PARAM function key to enter the parameter setting screen If the message ACCESS DENIED is displayed please refer to PARAMETER ACCESS CONTROL section CD U ER LU L INIT 0 000 ka HOLD l IK PAGE 3 Sefelec 41 XS series operating manual Measurement voltage selection The measurement voltage can be adjusted between 10 and 500VDC or 20 and 1000VDC option 26 by 1 VDC step Move the reverse video line in front of the VOLTAGE line with the UP DOWN arrows keys Press on the RIGHT arrow or ENTER key Display shows WOLTAGE HI LIMIT LO LIMIT HOLT PAGE I gt fig 7 3 Select the number to be modified by moving the cursor with the RIGHT LEFT arrow keys Increase or decrease the
30. Meas rementthreshold EE 18 Bleu 18 1000V megohmmeter function option AG261 nnn 19 Measurement voltage ENEE 19 Measurement FANG EC occec cc cnces eeccsecdeceesenedesceede deen ten caeneesuddaee denedeneseugdsncdenedemeneuedevevencdsuedenedeve 19 MEASUREMENT accra Cynnes geed onda E A AEE A 19 Measurement threshold Acie ee eee AR Ae A OE ORE ak Ae a tae 20 UUM Ot font teed tet ttn RAR DARL DAR A RAS BAe 20 A Ground COMMMUNY TUMCUON ee 21 E Eu ui EE 21 BOESEN EE 21 Measurement NEEN eege ieee tl gk at eae eal 21 Measurement thresholds a ccsescriieee eae ee eerste eee eee ees eee 22 JEE 22 Measurement cycles wc cata stan ececttcn dt ies ccediduindd eS Gnd dedicated ca dee CES Ee cae dalla de den dda 22 5 INTRODUCTION OPERATING INSTRUCTION 23 MEANING OF THE DIFFERENT SYMBOLS ON THEINGTIRUMENT 23 PRODUCT OVER VIEW EE 24 Front panel description EE 25 Keys defio EE 25 Liquid Crystal Display LCD descrptton EE 26 Tee e DE 27 3109 6 olkte esorsio c e oko Maer ere ert ere re a erro rent ere nearer er rene rere nearest erro rere ere emat tear erat rere rere teat rant Oo 27 Available accessories ANd options cceeeeeeeeeeeeeeeeeeeeeeeeeaaeeeeeeeeeeeeeeenaaeeeeeeeeeeeeeeeneneeeeeeeees 28 ee te EE 29 Preliminary SERIES e degeeegeeegeg eg geed ge dedEegeee gege gege geed 29 Eeer 30 Operator safety EE 30 Connection to a specimen et 31 Connection for the insulation resistance measurement and dielectric strength test any
31. N3 is the mot significant bit To enter in measurement mode a rising edge must be put on the MES_DCH line The high logical state must be set all during the measurement Input states CTRLIN TYPE NO N1 N2 et N3 are enabled only on a rising edge of MES_DCH Then the unit will do a measurement or if parameters aren t correct will give an error The CTRLOUT signal will appear at the first measurement and stay until a low logical state is set on the CTRLIN During measurement the unit will send various signals according to the test running and the selected parameters Those parameters can be an error signal ERROR an end of test signal EOT or a signal showing the test result PASS or FAIL Those signals are active on a high logical state For the SXS models the PLC function starts only a sequence For the DXS models the PLC function starts a measurement function or a sequence To force the unit to go in the discharge state the programmable logic controller must set a low logical state on the MES_ DCH input To reset the unit to the local mode the programmable logic controller can reset the CTRLIN signal to release the CTRLOUT then set the MES_DCH and reset it see diagram n 1 Sefelec CIR IR MES DCH CT OUT Diagram n 1 release of the CTRLOUT signal 86 XS series operating manual Information on cycle timing Minimum cycle timing in dielectric strength test hipot test Measurement conditions
32. XS SERIES version 0 44 XS SERIES MANUAL ELECTRICAL SAFETY TESTERS ciec Parc d Activit s du Mandinet 19 rue des Campanules 77185 LOGNES FRANCE Phone 33 0 1 64 11 83 42 Fax 33 0 1 60 17 35 01 XS series operating manual This manual is written for the following XS series models Hipot50VA Hipot500VA Hipot20VA Hipot200VA Insulation Ground Sequence 5kVAC 5kVAC 6kVDC 6kVDC 500V 200GQ 30A 1500m2 RXS50 X RXS56 xX xX RXS500 X RXS506 xX xX DXS50 x xX DXS56 x x x DXS500 xX xX DXS506 X xX x SXS50 x x x x SXS56 D D D D X SXS500 xX xX xX x SXS506 xX xX xX xX x According to your unit model please refer to the corresponding section in the following pages Sefelec XS series operating manual WARRANTY SEFELEC warrants that units are free from defects in material and workmanship SEFELEC warrants also that when properly used that units will perform in accordance with specifications of this manual If within one year after original delivery it is found not to meet this standard it will be repaired at no charge in SEFELEC service facility in Lognes Changes in the unit not approved by SEFELEC will cancel this warranty SEFELEC will not be liable for any indirect damages resulting of the use of the unit This warranty is in lieu of all other warranties Sefelec 3 XS series operating manual RESTRICTIONS DUE TO THE ACC
33. after half an hour of warm up and for a relative humidity lt 50 Altitude up to 2000 meters a Max Humidity rate 80 for a temperature of 31 C Weight and dimensions O RXS50 56 DXS50 56 RXS500 506 RXS500 506 SXS50 56 SXS500 506 15kg 21kg 27kg 28kg 131 mm 440 5 mm 450 5 mm Note the weight of those units being over 25kg 2 persons are necessary for manipulations Over voltage category CAT II Pollution rate Pollution 2 Occasional conductive pollution only by condensation Safety class Class instrument Earth protection by mains connection Sefelec 10 XS series operating manual 1 DIELECTRIC STRENGTH TEST 50VA hipot 50VA test Output voltage e Alternative 50 or 60Hz DC voltage on XS56 model e From 100V to 5 kVAC in one range 100V to 6 KVDC e Stability lt 1 for AV mains of 10 e Positive pole to earth with DC voltage e Residual lt 1 for Is 100 uA with DC voltage e Accuracy of the output voltage 2 50volts in relation with the set value for voltages between 100 and 5000 volts 6000 volts for DC and for a current lt 100 uA in the fault detection modes Al IMAX or Al IMAX e Discharge of the tested specimen and of the internal capacitor through a 1 5 MQ resistance with DC voltage Voltage reading e By kilovoltmeter directly connected to the output terminals e Accuracy 1 5 20 volts of the read value e Display by 600 points digital indicator Shor
34. age lt NR1 gt Sets a new value in volt to the current AC voltage parameter to the parameter set of the running function Hipot tester Min 10 Max 5000 Leakage Min 200 Max 270 For instance hipot ACV 5000 leakage ACV 244 ACC ACCurrent lt NR3 gt Sets a new value in ampere to the AC current parameter to the parameter set of the ground continuity function Sefelec 104 XS series operating manual OHM OHM meter Sets the main thresholds unit Ohm and the ground continuity display function Caution The action on this command will erase all previous recorded thresholds Reset to zero VOLT VOLTmeter Sets the main thresholds unit Volt and the ground continuity display function Caution The action on this command will erase all previous recorded thresholds Reset to zero HTIM HTIMe lt NR1 gt Sets a new value in second to the current hold time parameter to the parameter set of the running function Minimum time for the leakage current function 2 Seconds For instance HTIM 3 RTIM RTIMe lt NR1 gt Sets a new value in second to the current rise time parameter to the parameter set of the running function For instance RTIM 10 FTIM FTIMe lt NR1 gt Sets a new value to the current fall time parameter to the parameter set of the running function For instance FTIM 5 HLIM HLIMit lt NR3 gt Sets a new value to the high limit parameter to the parameter set of the running functi
35. akage current as well as the reactive current this involves an over sized generator with an increase in prices in weight and a decreasing of the operator safety who is exposed to higher currents The reactive current can be evaluated with the following formula Impedance Voltage Current Ohm s law Z U I for capacitances Z 1 Cw with w 2 Pi F reactive current Ir U C 2 Pi F i e U 3000 volts C 1nF 10 meters of shielded cable Ir 3000 1E 9 2 3 14 50 0 942 mA e Require to adjust the permanent leakage current threshold IMAX regarding the capacitance of each specimen e When testing a specimen which will be used with a DC voltage the AC voltage test can result in a decreasing of the life time because in particular of the heating and the CORONA effect Under the effect of an electrical field the orientation of molecules is done with friction which will occur with an AC voltage at each cycle every 20 or 16 mS Consequently the AC test is more severe than the DC voltage test Sefelec 117 XS series operating manual DIELECTRIC STRENGTH TESTS WITH A DC VOLTAGE BENEFITS e The power of the HV source can be lower than the one necessary in AC voltage less weight and more safety for the operator The current flows through the specimen only during the charging phase DISADVANTAGES e The charging current can trigger the breakdown detection e The specimen being charged it must be discharged through the built in discha
36. ar maintenance except an annual calibration If problems please follow the brief check list here after If the problem continues call our service department at the above number LCD SCREEN DOESN T COME UP e Check the correct connection of the main cord GEI e Check that the main voltage is in accordance with the value displayed on the main inlet on the rear panel of the unit e Check the fuse in the main inlet on the rear panel DISPLAY OF THE MESSAGE INTERLOCK OPEN or SAFETY LOOP OPEN e Check that the C5 connector has been correctly connected on the rear panel e Check that the correct connection have been done on the C5 connector 1 9 and 2 10 e lf using an external contact to close the safety interlock check that the contact works as expected The other possibilities for a bad functioning need an intervention inside the unit by qualified people However we can supply a service manual including schematics of our units Please get in contact with our Service department in order to know price and delivery time Sefelec 123 XS series operating manual CLEANING Only clean the instrument with a mild rag or slightly soaked with water CALIBRATION We recommend calibrating our units each year The calibration must be performed by qualified people having the complete procedure as well as correctly checked standards Our Maintenance department is at your service to perform the annual calibration Nevertheless if you wish to p
37. asurement voltage can stay permanently timer value set to 0 sec or during a time between 1 and 999 sec adjustable by 1 sec step Rise and fall times are adjustable in time second or in voltage increase dv dt from 0 1 to 0 9 sec and from 1 to 999 sec orin V s from 1V s to 500V s Sefelec 18 XS series operating manual 1000V megohmmeter function option XS26 Measurement voltage Voltage adjustable from 20V to 1000VDC by 1 volt step Accuracy 1 1V Positive pole of the HV generator is grounded earth Dynamic stability for a mains AV 10 gt 1 The maximum current in the measurement circuit is 2 MA 20 The discharge current is limited by a 2 2 KQ resistor Measurement range Display 2000 digits The measurement range is defined by the following formula Utest Umax generator x 200 GQ or 2TQ according to the option This gives the following board for the 100 250 500 1000VDC standard voltages 200GQ basic version 2TQ option version 100V 100kQ to 20GQ 100V 100kQ to 200GQ 250V 250kQ to 50GQ 500V 500kQ to 100GQ 1000V 1MQ to 200GQ 250V 250kQ to 500GQ 500V 500kQ to 1TQ 1000V IMQ to 2TQ Measurement accuracy 2000 digits numeric display with unity indication KQ MQ GO TQ Accuracy of the reading 1U 1 digit DXS and SXS models 200 GQ basic version 1 5 1U 2 TQ option and U lt 200VDC 2 1U 2 TQ option and U gt 200VDC 1 x U
38. ause the comparison with the current limit is performed directly by electronic circuits and not by the embedded software The comparison accuracy is lower than the IMAX mode Fast maximum current and variation current limit FIMAX Al This mode combines the FIMAX mode and the Delta mode Maximum current and variation current limit IMAX Al This mode combines the IMAX mode and the Delta mode Minimum current limit IMIN In the above detection modes it is possible to set a minimum value of current flowing through the specimen under test IMIN value adjustable from 0 00 mA up to 9 99 mA to insure that the specimen under test is correctly connected Without detection In this mode there is no current monitoring There is no output high voltage adjustment according to the load WARNING Permanent operation on heavy loads in this mode can heat the electronic amplifier The internal fan will start automatically to reduce the temperature with a possible stop of the HV generator for safety reasons Sefelec 12 XS series operating manual Permanent current measurement e Direct reading of the current on a shunt resistance in the test circuit e Display of the value on a 999 points digital indicator e Accuracy 2 5 2 U of the read value 1U 0 01mA In VDC accuracy is given for resistance loads gt 1 MQ Fault indication By message on the LCD display red and green LED and audible signal possibility to inhibi
39. ccccccccccecccceceececeeeeeeeeeeeeeeeeeeeeeececeeeeeeeeeseeeeeseeeeeeseeeeeeeess 52 Fast maximum current limit F ast IMAX vic oiceccpceieet pte tints indi els cata ntaeeada ede eatacdeatadeedeia 52 Fast maximum current and variation current limit FIMAX A 52 Maximum current and variation current limit IMAX Al 53 Without CELE EE 53 Minimum current limit IMIN RE 53 IMIN and IMAX threshold adustmemt cette eee eeeeeneeeeeeeeeeeeeeeeeeeeeaeeeeeeeeeeeeeees 54 Delta level SEH eege erdeetAeetei edee eech eeEede 55 IESSEN dereen 56 Parameter Memonz tte EE 57 Expert mode parameters Only ee 58 Breakdown detection mode selection during the ramps 58 IMAX and delta thresholds adjustment during the rampe 58 Control of the display during the ramps EEN 59 Power mode for 60335 and 60204 standards cc eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseeeeeneeeeeeeees 59 Dielectric strength test Hot test ENEE 60 Dielectric strength test error messages EEN 62 9 Ground continuity resistance measurement ENEE 63 MOSHING EE 63 Measurement Current selechon ENEE 64 Open circuit test voltage selection 6 Or 12 VAN 64 Resistance threshold RTE 65 DIE RODS FeO eerste 66 Parameter memortzaton nnn nnn nrn E AAEE EEEE AEAEE EEEE E EEEE EEEE EEEE 68 Sefelec 7 XS series operating manual Ground continuity resistance measurement ENEE 69 Ground continuity measurement error messages 70 10 Sequence mode operation GX 71 Measurement function settin
40. communication parameters cannot be changed and are Speed 19200 bauds Parity no Format 8 bits Stop bit 1 VVVV Sefelec 100 XS series operating manual Syntax rules The end of a message must be the LF character hexadecimal OA decimal 10 The separators inside a message are or The commands can be sent either in small letters or in capital letters The maximum number of characters in the message is 100 or 8 different commands The end of the execution of a complete message by the unit is indicated by the emission of the Xon hexadecimal 11 decimal 17 character and allows synchronizing the communication with the computer The computer must wait the Xon character before sending the next message The events occurring during the measurement are indicated to the computer by the emission of the Z character format error end of test interlock open To activate this function it is necessary to send the SRQ command after the initialization of the unit When receiving this character a special command allows the computer to get the event commands STB ESR If the message is not recognized by the unit the error message DIALOG ERROR 1 gt is displayed If the code is out of context the error message lt DIALOG ERROR 2 gt is displayed special code for a function when the function was not selected or numerical value out of range Sefelec 101 XS series operating manual List of the RS232C command
41. connector Detection and identification are fully automatic The connection on the unit is done on any of the C1 to C3 connectors available on the rear panel A maximum of three accessories can be connected at the same time REMOTE CONTROL TELECOMMA NDE fig 11 1 Sefelec 80 XS series operating manual fig 11 2 Operation A remote control accessory can be connected at any time except during the measurement time Inside a measurement function the unit sends a beep to indicate the accessory connection and the unit sends a double beep to indicate the disconnection A small icon on the LCD screen indicates the remote control accessory connection as well as the accessory type 1 or2 Pressing on the remote control push button will start the measurement The push button has to be kept pressed all along the test time Releasing the push button will stop immediately the test NB For safety reason it is no more possible to start a test from the green front panel push button when a remote control accessory is connected A 1 KUE pem OO D FIMAS I T AUTO fig 11 3 Sefelec 81 XS series operating manual Type 2 accessory mQ PARAH SDA HI 100m LO Ome Tauto ESC fig 11 4 Specific case for the sequence SXS50 amp 500 Sometime the Sequence needs the use of 2 remote control accessories Considering a sequence with multiple ground continuity test followed by a hipot test fig 11 5 At th
42. ction between the points 1 9 and 2 10 of the C5 connector of the rear panel Make the connection press again on the MEASUREMENT green push button to trigger the measurement mode message BOARD NOT READY The microprocessor board cannot communicate with the insulation resistance board You cannot perform a measurement get in contact with our Service department 33 1 64 11 83 48 message PARAMETER ERROR One or several parameters set for one of the sequence test is not compatible with the sequence operation i e in hipot line TIME MANUAL Check the parameters for all the test steps message SEQUENCE ERROR Only 1 point in a multiple ground continuity A PAUSE must be between 2 test steps Several consequently PAUSE message SETUP ERROR In the SETUP menu on the line INTERFACE the option WITHOUT has to be selected Sefelec 79 XS series operating manual 11 Accessories with remote control feature Accessories type Some accessories in the XS series are equipped with a remote control push button to trigger the measurement start and stop Those accessories are sorted in two categories Type 1 For insulation and hipot test ex TE 58 xs Ne P Type 2 for ground continuity ex TE 81 xs r There is at least one accessory with remote control for each measurement function Their operation is very simple and fully automatic Connection The remote control accessories are supplied with a sub D 15 pin
43. cursor with the RIGHT LEFT arrow keys Increase or decrease the value with respectively the UP and the DOWN arrow keys 012345678 9 0123 etc Repeat operation for all the numbers if necessary Enter the time with the ENTER key To adjust the rise and fall time Fast voltage rise and fall time can stress more than wanted the specimen under test To limit the risk the unit is equipped with an adjustable slow rise and fall time for the measurement voltage Ov z gag mont e maintien descente temps Uessai REMINDER the measurement voltage is negative Sefelec 44 XS series operating manual To adjust the rise and fall times Move the reverse video line in front of the RISE or FALL line Menu page 2 Press on the RIGHT arrow or ENTER key Display shows lt PAGE 22 gt fig 7 6 Select the number to be modified by moving the cursor with the RIGHT LEFT arrow keys Increase or decrease the value with respectively the UP and the DOWN arrow keys 012345678 9 0123 etc Repeat operation for all the numbers if necessary Enter the time with the ENTER key If necessary move the cursor on the unity area S seconds or V s volts per second With the UP and DOWN arrows display the required unity and enter the unity with the ENTER key Parameter memorization XS series unit allows to store in 10 memories numbers 0 to 9 measurement parameters voltage threshold time From the measurement menu to
44. e DISCHARGE red push button is pressed If a test time value has been selected every second the value of the test time counts down one unit When the displayed time reaches 0 the output voltage is cut off automatically and the last measured value is stored on the LCD screen According to the insulation resistance value in comparison with the HIGH and LOW limits the red LED FAIL or the green LED PASS is illuminated Sefelec 46 XS series operating manual FIN DE ith DMQ 2 HS0 Wo SH 149 GR SE 00G EO T10 3 fig 7 9 Press on the DISCHARGE red push button to cancel the memorization on the LCD screen The HV indicator goes out Display shows figure 11 Press on the ESC key to escape the function Error messages The following error messages may appear during the measurement message SAFETY LOOP the safety loop is not closed There is no connection between the points 1 9 and 2 10 of the C5 connector of the rear panel Make the connection press again on the MEASUREMENT green push button to trigger the measurement mode message OVER RANGE the insulation resistance of the specimen under test exceeds the measurement specifications of the unit refer to specification section of this manual message UNDER RANGE the insulation resistance of the specimen under test is lower than the measurement specifications of the unit refer to specification section of this manual message CHARGING the measureme
45. e e Accuracy of the output voltage 3 50volts in relation with the set value for voltages between 100 and 5000 volts 6000 volts for DC and for a current lt 1mA in the fault detection modes Al IMAX or Al IMAX e Discharge of the tested specimen and of the internal capacitor through a 1 5 MQ resistance with DC voltage Voltage reading e By kilovoltmeter directly connected to the output terminals e Accuracy 1 5 20 volts of the read value e Display by 600 points digital indicator Short circuit current e gt 200 mA in AC for the maximum voltage adjustment e gt 100 mA in DC for the maximum voltage adjustment Breakdown detection Current variation mode Al The ATEST detector automatically carries out the subtraction between the current which flows normally in the device under test I U Z and the one which occurs at the time of a fault I I Ifault e Amplitude adjustable between 10 mA and 100mA 10 by 10 mA step e Width of current pulse 10u 20 Sefelec 14 XS series operating manual Maximum current limit IMAX Adjustable from 0 1 mA to 110 mA by 0 1mA step The unit monitors permanently the current flowing through the sample under test and compares according the 2 following possibilities The high limit IMAX gt 0 the low limit IMIN is set to 0 e If the measured current is gt or to the IMAX then the test is FAIL breakdown The high limit IMAX gt 0 the low limit IMIN i
46. e board jumpers setup The pin 2 of the rear panel connector isn t used The pin 1 of the rear connector gives the logarithmic value of the measured resistor V1 The resistor value is given by the following formula R 2x 10 V kohms For example if V1 3 7V then R 10 0 Mohms Accuracy of the 0 10 volts output voltage compared to the display 0 1 5 mV Accuracy of the resistance computed with the output voltage 1 Sefelec 95 XS series operating manual Dielectric strength test mode 2 outputs setup Refer to section related to the board jumpers setup This setup is the factory default setup The pin 2 of the rear panel connector gives the value of the measured high voltage V1 e from 0 to 10 volts for 0 to 5000 VAC e from 0 to 10 volts for 0 to 6000 VDC The pin 1 of the rear connector gives the value of the leakage current V2 e from 0 to 10 for 0 00mA to 9 99 mA Test voltages and leakage current are given by the following formulas HTVAC V1 10 x 5000 volts HTVDC V1 10 x 6000 volts V2 10 x Imax Imax 9 99mA for SXS DXS and RXS50 Imax 99 9mA for SXS DXS and RXS500 Accuracy of the 0 10 volts output voltage compared to the display 0 1 5 mV Dielectric strength test mode 1 output 1 input setup Refer to section related to the board jumpers setup This setup is operating only in the MANUAL mode e Select HIPOT function e Select PARAM e On lt page2 gt on the line TIMER select t
47. e capacitive specimens To detect a breakdown the A I mode ARC detection monitors only the fast current variations t gt 10uS and amplitude gt 1mA This doesn t require any adjustment regarding the specimen capacitance However this mode can not detect a dielectric strength default in case of a specimen in short circuit since the high voltage application That is why the MG series units allow to combine the IMAX and the A modes in order to make reliable and without adjustment of dielectric strength tests The IMAX value is set to a value close to the unit short circuit current under the test voltage The MG series units allow to inhibit the detection systems OFF mode in order to locate visually where is the dielectric strength fault WARNING this mode doesn t cut off the high voltage and therefore it is possible to destroy or burn the specimen under test The power of the HV source being limited a continued use of the OFF detection mode can trigger the built in thermal safety switch Under those circumstances display of the message INTERLOCK DISABLE wait between 3 and 5 minutes before proceeding to the tests Sefelec 118 XS series operating manual Ground continuity measurement On a unit or an electrical device using or generating hazardous voltages ground continuity measurements insure that all the accessible protective parts are correctly connected to the protective earth connection wire This measurement is almost a lo
48. e sequence start the unit inhibits the accessories which not compatible with the measurement function first step In our example the type 1 accessory is inhibited icon in reverse video mode Therefore it is not possible to start the sequence from the remote control accessory dedicated to the hipot or insulation resistance test To summarize gt As soon asa remote control accessory is connected and accepted by the unit the MEASUREMENT green push button is inhibited gt Measurement start is only possible from the correct accessory regarding the measurement type described in the first line of the sequence LINE 1 gt According to the measurement type the remote control accessories are in operation or not Sefelec 82 XS series operating manual 12 Input output Interfaces Input Output for Programmable Logic Controller Interface PLC This option gives a functional control of the measurement unit by a Programmable Logic Controller system WARNING The PLC interface must be selected in the SETUP menu line INTERFACE PLC Electrical specifications INPUTS e Number 7 e Type Optoelectronic e Input resistance 1 5 kohms e Minimum voltage 11 VDC or 8 VAC e Maximum voltage 43 VDC or 30 VAC OUTPUTS e Number 5 e Type Dry contacts e Maximum voltage 70 VDC e Switching rating 30W e Maximum current 0 15 ADC Description of the logical states Input Logical state HIGH DC or AC voltage with an amplitude be
49. e the necessary cares to avoid to introduce measurement errors short leads leads not touching any metallic or insulating parts During insulation resistance measurements having high values gt 100 Gohms the proximity of the operator putting his hand close to the specimen under test can alter or make unstable the measurement It is important to beware of Nylon blouses or of insulating material things capable of generating by static electricity high electrical fields which can alter the measurement of high value resistances 100 Gohms under 100 VDC 1 nA of measurement current MEASUREMENTS OF CAPACITORS We remind that a lot of recent electrical units are fitted with main line filters including capacitors for the electromagnetic compatibility When measuring on capacitors it is advised to select the filter mode CAPACITOR of the SETUP menu in order to stabilize the measured values A Indeed on capacitors the variations of the measurement power supply even small as well as the interferences are entirely transmitted to the input of the current measurement system which have a very high gain and therefore will amplify these variations The CAPACITOR filter switches on circuits which will limit the instability of the measurement B Never perform insulation resistance measurements on capacitive specimens in reducing the measurement voltage between each test but always in increasing the voltage The hysteresis and polarization phenomena
50. ector with voltage selector 115V 230V Z9 LCD contrast adjustment potentiometer Z10 15 points female sub D connector for remote trigger accessory connection Z11 9 points female sub D connector for RS232C interface Z12 Area for the output of the cables in the REAR PANEL OUTPUT option Z13 24 points connector for IEEE 488 2 interface Z14 10 points screw terminal for safety loop connection Z15 10 points screw terminal for PLC connection Z16 25 points female sub D connector for Leakage current measurement function Z17 RJ45 connector for ETHERNET interface Supplied accessories 1 operating manual CD 1 power cord GEI 3 x 10 pts screw terminal with pre wired safety loop 1 return cord CO175 Sefelec 27 XS series operating manual Available accessories and options TE54 TE58 XS TE65 TE66 TE81 XS continuity feature TE83 XS TE86 XS CO160 XS C0174 RXS50 SXS50 C0175 C0177 C0179 C0180 C0183 C0184 SXS500 C0185 SXS500 C0192 RXS50 SXS50 C0193 hand held HV probe 50VA DXS50 RXS50 SXS50 hand held HV probe with remote control 50VA DXS50 RXS50 SXS50 hand held HV probe 500VA DXS500 RXS500 SXS500 groung continuity measurement set with CO183 and CO184 SXS50 SXS500 ground continuity probe with remote control and PASS FAIL indication for multiple HV 500VA test pistol with remote control HV 50VA test pistol with remote control red green lamp to indicate when HV is on ext
51. ed boncinssedueccssiovenrsdiduoaaroies 117 SELECTION OF THE TEST VOLTAGE wsticncccseiattinmaiattintelattinaeattionaialtiateiaiinieiatiateiades 117 BREAKDOWN DETECTION MODE GELECTION 118 Ground continuity measurement EEN 119 Current selection EE 119 Voltage selection nanana a Sue cues uate uss aena Eaa era a a a 119 Uerteeler 119 Freet be observed siaii nidia a aie d ainai daada aedi dada diiad 120 14 Safety interlock connector CP 121 15 Maintenance and calibration iiisciiseitecisvccicnciwosivnd ines tertannaiensinusdendinessevdawusinerweutdinsuwentanenedinnds 123 a TR MI A EE 123 INSTRUMENT RETURN ict ehccsredchiaaniditenataaiioadinctvaanedsdagedibaiuennsdelboadibideoctearnnounabicentduteness 123 MAINTENANCE ee EE EE 123 e E EC 124 GALIBRATION seinieni ROMEO OY Ee 124 Sefelec 9 XS series operating manual Specifications Power supply a Mains 115 230V 15 single phase 47 to 64 Hz DXS50 56 RXS50 56 SXS50 56 230V 15 single phase 47 to 64 Hz DXS500 506 RXS500 506 SXS500 506 a Temporized protective fuse in mains socket on the rear panel RXS50 56 DXS50 56 SXS50 56 2AT for 230V and 4AT for 115V RXS500 506 DXS500 506 SXS500 506 4AT for 230V Power consumption 40VA without load 550 VA maximum Operating condition a The instrument must be used indoor in horizontal position or on tripode a Operating temperature Storage 10 C to 60 Operation 0 C to 45 C a Accuracy is rated
52. ed it more than required Therefore the unit is fitted with a current rise time system The same phenomena existing during the cut off of the current the unit can perform the following test cycle max MONTEE MAINTIEN DESCENTE The three possible ways to operate the unit are the AUTO DEFAULT and MANUAL modes mode AUTO see above diagram mode DEFAULT or stop on default is similar to the AUTO mode except that the test is stopped when the first FAIL measurement regarding threshold appears mode MANUAL the current is permanently applied to the specimen under test The test will be stopped if the operator press on the red discharge push button Rise and fall time are not used From the parameters menu press on the DOWN or UP arrow keys as many times necessary to display the following menu Sefelec 66 XS series operating manual e Move the reverse video line in front of the TIME line with the UP DOWN arrows keys e Press on the RIGHT arrow or ENTER key e The display shows ILD E OI PAGE 22 fig 9 7 e With the UP DOWN arrow keys scroll the various available timer modes AUTO MANUAL e Enter the selected mode with the ENTER key In the AUTO mode it is possible to set the RISE HOLD and FALL times from 0 up to 999 seconds e Move the reverse video line in front of the HOLD line e Press on the RIGHT arrow or ENTER key e The display shows fig 9 8 e Select the number t
53. ed mode with the UP DOWN arrows NORMAL CAPACITOR R H TIME then enter LANGUAGE NORTEL PARAM ACCESS rome fig 6 3 mode CAPACITOR TI as The CAPACITOR mode allows to perform stable insulation resistance measurements on capacitive specimens reel of cable capacitors During dielectric strength test with a DC voltage the CAPACITOR mode inhibits the voltage adjustment to avoid over voltage switches the 1 5 Mohm discharge resistor at the beginning of the fall time and controls the residual discharge voltage until this one is lower than 100 volts Operating this mode is recalled by the drawing of a capacitor over the unity display in the measurement menus mode R H TIME Real Hold Time The R H TIME Real Hold Time mode improves the operation of voltage ramp during the dielectric strength tests It is suitable for tests using a DC high voltage on capacitive specimens At the end of the rise time the unit controls the output voltage and triggers the hold time only when the voltage has reached the pre set value During the fall time the unit stops the measurement cycle when the output voltage is lower than 30 Volts mode NORMAL The most common mode linear rise and fall time t lt 3 sec with automatic test voltage adjustment at the end of the rise time Sefelec 34 XS series operating manual Access control to the parameters The access to the parameter modification can be secured by a password This l
54. eeesesennnennneeseeeennrrnnrresssrrerrrnnrrnsssrrennnnnnnnnseerenne 12 Fast maximum current and variation current limit FIMAX Al 12 Maximum current and variation current limit IMAX Al 12 Minimum current limit IMIN EE 12 ET EE dee 12 Permanent current TUE ue Ce eeh eeh hehehe 13 e Elle ere WEE EE 13 dl nt 13 MOC EN EC 13 MORE DE E EE 13 mode AUTO Meee epnerer eer eset a EE 13 2 DIELECTRIC STRENGTH TEST BOOVA 14 HIPOE S00VA test EE 14 CUMS VON AG EE 14 VOMAQS TO in EE 14 SHON CUCUN GUEFEDL ZEN E 14 Breakdown detechon tiranina unnan Ennn Enan Enan Enna EEan nenn E ennnen nnne 14 Current variation mode EE WEEN 14 Maximum current limit IMAX EE 15 Fast maximum current limit F ast IMAX 2 0 0 cccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaaeeeeeeeeeseeeeeeeneeeeeeeess 15 Fast maximum current and variation current limit FIMAX Al 15 Maximum current and variation current limit IMAX Al 15 Minimum current limit IMIN wo cece ceccceeeccceeeseceecseeeeseueueeeueueeeueueeeueueueueueesueeeesueeeeeues 15 Without detection EEN 15 Sefelec 5 XS series operating manual Permanent current Mme asurementinwe an vee Cae eee ae Een 16 Fault indicato Miei an aeaa a a a o a a a a a A a a A a 16 Bien EE 16 MOG ES OTT 16 mode DE AIT EE 16 PTV NW EE 16 3 Megohmmeter function insulation resistance measurement 17 500V megohmmeter FUNCTION EEN 17 Mgas rem VONAGE a cccta a a a a a E G 17 leese Eeer 17 Measurement aCCUlaCy ee 17
55. en the numerical values are given When the value cannot be measured no continuity or overload the numerical indication is replaced by To check if a tested specimen is good or bad at the end of a sequence it is necessary to check the STB register bit 3 To get the result of each test step check if the result character is space or q RS232 IEEE 488 commands summary Sefelec XS series operating manual Sefelec 109 XS series operating manual setup MQ X X X X X X X X X X X X X X X X X X X X X X Sefelec 110 XS series operating manual Advices and programming exemples In order to help you writing control software for the XS series we provide a training software XSCom The XSCom software gives you the possibility to fully control all the unit functions in following step by step all the detail exchanges between the PC and the measurement device This training software has been written in three languages Delphi pascal C Builder C and Visual basic Source codes are provided with many comments For more detail refer to the XSCom files on the CD Sefelec 111 XS series operating manual Trouble shooting the RS232 interface When the RS232C interface is not operating as described in this manual please check the following points No reaction from the XS unit when sending commands O The cable between the XS un
56. ent probe and the return lead on the specimen before starting the measurement by pressing on the green MEASUREMENT push button The red lamp Danger HV ON lights and the display shows in example L 27 KR 249 SOKUAC DSIMAX T AUTO EN fig 8 17 IMPORTANT ALWAYS MAKE SURE THAT THE HIGH VOLTAGE INDICATOR RED LAMP IS NOT ON WHEN CONNECTING OR DISCONNECTING THE SPECIMEN In case where the MANUAL test time mode has been selected the unit remains in the measurement mode permanently until the DISCHARGE push button is pressed Use the UP arrow key to increase the output voltage and the DOWN arrow key to decrease the output voltage The maximum voltage which can be reached is those which is displayed on the parameter line VOLTAGE x xx KVAC However according to the impedance of the specimen under test the maximum reached voltage could be lower If the AUTO test time has been selected every second the value of the RISE time counts down one unit then the value of the HOLD time and at least the value of the FALL time When the FALL time reaches 0 the output voltage is cut off automatically According to the leakage current value during the test time in comparison with the IMAX and IMIN limits the red LED FAIL or the green LED PASS is illuminated Sefelec 60 XS series operating manual In both modes AUTO and MANUAL if the leakage current flowing through the specimen under test overruns the set breakdown de
57. erform yourself the calibration we can provide a calibration kit including a manual XS90 and calibration boxes XS 91 1 XS 91 2 XS 91 3 XS 91 4 Please get in contact with our Maintenance department in order to know the price and the delivery time Sefelec 124
58. ernal box equipped with a female european mains socket 50VA DXS50 return of measurement lead DXS50 RXS50 SXS50 SXS500 HV measurement lead for automatic test systems connection only for 50VA RS232C interface cable HV measurement lead for automatic test systems connection only for 500VA 2 wires cable for continuity measurement with crocodile clip SXS50 SXS500 2 wires cable for continuity measurement with retractable tip probe SXS50 external box equipped with female French socket 500VA DXS500 RXS500 external box equipped with 6 x female different country socket 50VA DXS50 external box equipped with 6 x female different country socket 500VA DXS500 RXS500 SXS500 C0200 a CO209 C0210 AOQ10 XS AOQ11 XS KRXS OPTION XS 02 OPTION XS 03 OPTION XS 04 OPTION XS 05 OPTION XS 06 OPTION XS 07 OPTION XS 08 OPTION XS 10 OPTION XS 13 OPTION XS 20 OPTION XS 22 OPTION XS 100 OPTION XS 101 OPTION XS 26 XS 90 XS 91 1 XS 91 2 XS 91 3 XS 91 4 XS 96 Sefelec external box equipped with female foreign socket 50 or 500VA return pistol remote control operating with 2 hands remote control footswitch rack mounting kit PLC programmable logic controler interface 0 10 volts analog input output DXS50 RXS50 test sequence DXS50 DXS500 measurement input output on the rear panel IEEE 488 interface 3mA AC DC current limitation PLC interface 0 10 volts analog input output 6000VDC 20VA DXS50 RXS5
59. eters set N2 N1 NO Memor 0 0 0 0 0 0 1 1 0 1 0 2 0 1 1 3 1 0 0 4 1 0 1 5 1 1 0 6 1 1 1 7 1 0 0 8 0 0 1 9 CTRLOUT output acknowledgment of the CTRLIN signal EOT output the contact of the relay is closed at the end of the test PLCPASS output the contact of the relay is closed when the test pass PLCFAIL output the contact of the relay is closed when the test fail ERROR output the contact of the relay is closed when an error occurs CHARGE OVERLOAD OVERVOLTAGE BOARD NOT READY SYNCHRO ERROR INTERLOCK DISABLE VOLTAGE ERROR Sefelec 85 XS series operating manual Measurement discharge cycle Warning The PLC function must be selected in the configuration menu line INTERFACE PLC To take the control of the unit you must be on the initialization screen If not you will have the DIALOG ERROR lt 2 gt message displayed Note For DXS models in sequence mode the control is taken from the measurement screen of the first sequence function To do a measurement CTRLIN must be on high logical state For the DXS models the programmable logic controller must select a measurement function Megohmmeter or dielectric strength test For the other models it is advised to let the TYPE line not connected The programmable logic controller has to select a number of parameters which will be binary coded with NO to N3 bits NO is the least significant bit and
60. g ENEE 71 Seguente SOTUMG EE 71 ln ee E e EE 72 PRMCHOM SClCCHON tsa ie eee thee ee eee hd eke hed Aedes hae heeled ed ede 73 Parameter memory number selection cccceeeeeeeeeeeeeneeeeeeeeeeeeeeeeeaaeeeeeeeeeeeseeeeneneeeeeeeees 74 Series of tests with manual control i degt eeggke ege deg egEeier 74 How to run a simple Sequence EEN 75 Sequence with manual control E 76 lte COUN CONMIN OY vee oraz ewe ivcn tor eaues cenccunedovecved A E AETA 76 Multiple Goller sueteaes eee Paes vee hes es 77 Multiple ground continuity followed by a dielectric strength test automatic sequence 78 Error messages for the SEQUENCE Mode sessssseseetttseseetrttrrnttrseerttnrnnnnnnneerrnnnnnnnnnneenenne 79 11 Accessories with remote Control feature 2 0 0 0 ccceeeeecceeeeee cette eee eeeeeeaaeeeeeeeeeeeeeececeeeeeeeeeeeeeeee 80 ACCOSSOMOS EE 80 EE 80 ln EE 81 Specific case for the sequence SXS50 amp BOU 82 Blees lit 83 Input Output for Programmable Logic Controller Interface DLC 83 Electrical SDECIIICAIIONSs eege 83 Description of ue e EE 83 Ree el 84 Description of the input output signals eee cece eeeeeeeee eee eeeeeeeeeeeaaeeeeeeeeeeeseeeeeeeeeeeeeees 85 Measurement discharge Cycle v 2 ancnavanainoaiannda nia caaaainaaWanaias 86 Information om CY Cle timing oeie e ainiaan ved dics deeds ate Se leita auld iaeia Ei a AATA e a A ecu eek 87 0 10 Volts analog input output 03 OPTION 1 eneen 92 Specificato EE 92
61. h test is to apply a voltage DC or AC between defined points and after voltage stabilization to check that the leakage current created by breakdown phenomena or breakdown discharges in the air or in the insulating materials is not greater than the nominal acceptable value The default sanction is determined by the analyze of the shape the amplitude and the holding time of the current supplied by the generator to the specimen under test and by comparison with a preset limit SELECTION OF THE TEST VOLTAGE The dielectric strength tests intending to verify that materials or equipments comply with standard requirements it is important to refer to these standards to select the voltage In case of no indication regarding the test voltage a common rule is to apply the following formula Utest 2 x Unominal 1000 volts Most of the standards specify the type of the test voltage AC 50 60Hz or DC A common rule is to test the specimen with a test voltage of the same type that the voltage which will be apply during the final use However certain among of technical difficulties exist which force to depart from this common rule DIELECTRIC STRENGTH TESTS WITH AN AC VOLTAGE BENEFITS e The specimen is stressed with the both voltage polarities e The specimen being not charged there is no need for a discharge system DISADVANTAGES e Most of the tested specimens having a certain amount of capacitance the HV source have to supply the le
62. he MANUAL mode The pin 2 of the rear panel connector gives the value of the measured high voltage V1 e from 0 to 10 volts for 0 to 5000 VAC e from 0 to 10 volts for 0 to 6000 VDC Test voltages are given by the following formulas HTVAC V1 10 x 5000 volts HTVDC V1 10 x 6000 volts Accuracy of the 0 10 volts output voltage compared to the display 0 1 5 mV The pin 1 of the rear panel connector is an input which can receive voltages between 0 and 10 VDC for output high voltages from 0 to the maximum value displayed on the parameter line VOLTAGE x xx VAC If the input voltage is higher than 10 V 5 the following message is displayed LIMIT ERROR Accuracy of the output high voltage compared to the input voltage 1 20 volts for a leakage current lt 100UA There is no automatic adjustment of the output voltage according to the load Sefelec 96 XS series operating manual High voltage output response time for an input voltage variation e with display mode lt 1 second e without display mode lt 0 5 second Operating instructions Use a shielding cable for the analog input and output lines Connect the shielding to the pin 3 of the C6 connector Sefelec 97 XS series operating manual IEEE 488 interface IMPORTANT The IEEE 488 function must be selected in the SETUP menu page 2 on the line INTERFACE IEEE 05 The test units of the XS series could be equipped with a IEEE 488
63. he nut v Put the cover in its original position with the earth connection v Screw the cover v Connect the power cord v Put the power on Operation Go in the SETUP menu Go in lt page 2 gt On the INTERFACE line select the PLC mode Programmable Logic Controller If the MISSING OPTION message is displayed please check that the board has been correctly installed Important if the PLC mode is not selected the Analog input output function will not operate Sefelec 94 XS series operating manual Megohmmeter mode 2 outputs setup Refer to section related to the board jumpers setup This setup is the factory default setup The pin 2 of the rear panel connector C6 gives the value of the resistance in a range V1 The pin 1 of the rear connector C6 gives the value of the range V2 V1 value in a range from 0 to 10 volts compared to the displayed value V2 value of the range 00 00 kO Ovolt 000 0 kQ 1 volt 0 000 MQ 2 volts 00 00 MQ 3 volts 000 0 MQ 4 volts 0 000 GQ 5 volts 00 00 GQ 6 volts 000 0 GQ 7 volts 0 000 TQ 8 volts The resistor value is given by the following formula R 2 x V1 x 10 V kohms For example if V1 5 2 V and V2 3 0 V then R 10 4 Mohms Accuracy of the 0 10 volts output voltage compared to the display 0 1 5 mV Megohmmeter mode 1 output setup Refer to section related to th
64. hen operating this mode a fixed drawing is displayed in the measurement result window Ia Sefelec 37 XS series operating manual Remote trigger mode DISPLAY ER REMOTE TRIC ME INTERFALE SEQUENCE lt PAGE 32 gt fig 6 9 WARNING This mode should not be used with the remote control accessories see section 11 The XS series units have been designed to be directly triggered by a number of Sefelec accessories The operation is fully safe and the accessories are automatically identified If you are not using such remote control accessories you can even use a simple contact to trigger a measurement This is possible through the REMOTE TRIG mode The operation of this mode is reminded in the measurement windows by the following symbol Example with the Megohmmeter function MEM 0 OHM KM MQ ba HI 19 GQ Lor 000 KR T 0 ESE fig 6 10 Electrical connection and trigger Insert a contact between points 1 and 9 or 2 and 10 of the screw terminal C5 on the rear panel If you use points 1 9 for the external contact a permanent link or the safety loop should exist between points 2 10 and vice versa Sefelec 38 XS series operating manual IMPORTANT In the REMOTE TRIG mode the unit will stop the measurement but will not display any SAFETY LOOP open message If you have selected the REMOTE TRIG mode and if the connections 1 9 and 2 10 are already done when selecting a measurement function Megohm
65. imitation is made of three different levels access UNLOCKED Let you modify all the parameters access READ ONLY Let you only recall the memories but you can not modify them access LOCKED You can not modify anything security is total When trying to modify the parameters in any of the 2 access controlled modes the error message ACCESS DENIED is displayed Password programming The password set up is in two steps the password input and the security level input Password input or password modification is only possible when the PARAM ACCESS line displays FREE Move the reverse video line on the PARAM ACCESS and then Enter At the first unit power ON the parameter access is UNLOCKED and no password is activated INPUT PASSUORD LANGUAGE ENGLIS BEEP ON FAIL O FILTER NORMA UNLOCKED lt PAGE 21 gt fig 6 4 To create a password and to select the access level READ ONLY LOCKED UNLOCKED proceed as follows e Select the figure position to modify with the right and left arrows e Increase or decrease the figures 0123456789 01 2 to select your code Repeat this action for each figure e Once the complete code is entered validate with Enter key Sefelec 35 XS series operating manual WARNING The default configuration is with a void password A CORRECT PASSWORD IS A REAL integer or decimal without point NUMBER If the code is not a real number you will get an error and the fo
66. ing the current flowing which will produce sparks This can modify the real total test time and can alter the contact surface of the specimen Sefelec 120 XS series operating manual 14 Safety interlock connector C5 Safety interlock contact to be connected to pin 9 Safety interlock contact to be connected to pin 10 Green lamp Red lamp 25VDC common for green red lamps O Volt ground PASS contact FAIL contact Safety interlock contact to be connected to pin 1 Safety interlock contact to be connected to pin 2 How to connect the green and red lamps the security loop contacts and the contacts pass fail Sefelec s curit 2 security 2 s curit 1 security 1 Lampe rouge Red lamp cont bon p sch kon mauvals fail S XS series operating manual Fouge Vert tcl Sefelec 122 XS series operating manual 15 Maintenance and calibration PRELIMINARY Our warranty refer to the beginning of this manual attests the quality of materials and workmanship in our products If malfunction should be suspected or other information is desired call our technical assistance 33 1 64 11 83 48 for FRANCE or contact your local distributor INSTRUMENT RETURN Before returning an instrument to our Service Department please call them at the above phone number for shipment instructions Use packaging that is adequate to protect it from damage MAINTENANCE Our units don t need particul
67. instrument model name See SETUP fig 5 4 According to the position of the user related to the unit screen and the light conditions it is possible to adjust the screen contrast by turning the potentiometer located on the rear panel Z9 Operator safety advices WARNING NEVER TOUCH THE METALLIC TIP OF THE HV TEST PROBES TE54 CO177 WHEN THE TEST PROBES ARE CONNECTED ON THE UNIT AND THE RED HV LAMP IS ON The guard connection on the rear panel is at the measurement voltage Umax 1000 VDC 2mA The measurement probes can include limitation or protective elements therefore it is forbidden to modify without written agreement from SEFELEC Company a The instrument must be placed in a position where the ON OFF switch can be easily accessible a Check the correct operation of cables before use a Take every precaution necessary to avoid inadvertently touching the sample under test when there is a voltage passing through it front panel RED lamp on a Do not open the cover a Do not place the unit close to a wall so that the air passes through the ventilation ears a The unit is supplied with a double SAFETY LOOP preventing generation of voltage The test can be carried out only when pin 1 is linked to pin 9 AND pin 2 to pin 10 on the C5 rear panel screw terminal connector a Note It is therefore advisable to put into operation in this connection dry contacts in condition of safety closed door secured cover lo
68. ion Refer to the specification section message OVER HEATING The unit is fitted with a thermal safety device on the current transformer set at 80 C Wait for 30 minutes before starting a new test message CONTINUITY ERROR The measurement leads are not correctly connected on the specimen Or the resistance specimen is too high message BOARD NOT READY the microprocessor board cannot communicate with the insulation resistance board You cannot perform a measurement get in contact with our Service department 33 1 64 11 83 48 Sefelec 70 XS series operating manual 10 Sequence mode operation SXS Any measurement function in the XS series is independent from the others The operator can decide about the parameter values and how to operate However the need to automate the electrical safety test request the capability to link the insulation hipot and ground continuity tests with parameters according to standards or to internal company procedure The sequence mode gives the possibility to define and to link automatically all the tests according to the operator need Measurement function setting To access to measurement functions press the FUNCT key from the initialization menu then press on the selected function key FUNCTION OF MEASUREMENT MEGOHM fig 10 1 Function not defined on the first screen can be accessible with the NEXT key Sequence setting Press on the SEQ key from the initialization me
69. iple ground continuity SEQUENCE MEM 0 lt SEQUENCE MEM al ligne 1 ligne 1 FONCTION x MEMOIRE a FONCTION x MEMOIRE a ligne 2 FONCTION y MEMOIRE b ligne 2 FONCTION y MEMOIRE b ou ou PAUSE PAUSE ou POINTS n POINTS n ligne 8 ligne 8 fig 10 3 On the above diagram a and b represent the numbers of parameter sets associated to functions x and y chosen between those available HIPOT MEGOHM GROUND POINTS and PAUSE or EMPTY in case the test line is not used Sefelec 72 XS series operating manual To modify the memory number from the measurement screen press on the MEM x key Display shows fig 10 4 With the up and down arrow keys increase or decrease the memory number from 0 to 9 The parameters recall line resumes the content of each memory Enter the selected memory either by pressing again on the MEM x function key or by pressing the enter key WARNING ANY PARAMETER MODIFICATION IS AUTOMATICALLY STORED IN THE MEMORY Function selection From the initialization menu press on the PARAM key Display shows WOID WOTD VOID UOID fig 10 5 WOTD ma VOID UOID Sefelec 73 XS series operating manual Scroll the possible selection HIPOT MEGOHM GROUND PAUSE POINT with up and down arrow keys then ENTER WOLD Beton E GOHM Le 3 i ies fig 10 7 Parameter memory number selection Select the me
70. is development of gas producing partial discharges bringing to breakdown Under combined effect of the humidity gt 95 and the temperature gt 100 C most of the polymers dissipate The water can produce inflating in the insulation and create cracks which will facilitate the electric arcs advance INSULATION RESISTANCE MEASUREMENT The insulation resistance measurement is intended to verify that the various components and sub assemblies of electrical equipment have an insulation resistance such as the leakage currents don t reached inadmissible values The principle is to apply a DC voltage stable and specified selected among the standard values between defined points and after a prescribed time to measure the current flowing through the tested material By using the Ohm s law resistance voltage current the result is given by the value of the insulation resistance Then this value is compared to the minimum threshold specified by the standard used for the test Sefelec 114 XS series operating manual PRECAUTIONS TO BE OBSERVED It is important to connect the specimen to be measured in taking care of the parasite leakages which could be created by the measurement operating procedure The supplied accessories have a shielding which is connected to a guard potential this insures a good immunity of the measurement regarding the parasitic leakage currents and the AC residuals When using extending of the basic probes tak
71. it and the PC computer must be correctly connected at both ends The cable is a special wiring cable check that the cable is a Sefelec CO179 model or check that the wiring has been done according to the instructions The XS series units have several possible interface types check that in the SETUP menu lt page2 gt the RS232 mode has been selected on the INTERFACE line The end of message must be the LF hexa 0A decimal 10 character If this character is not sent the XS unit won t handle the message check that this character is added to the command The first command must be the REM command which displays the REMLOC message on the LCD display the unit being ready to receive all the others commands WARNING the first REM command should not wait for the Xon character before being sent The unit goes in REMOTE mode and then hang up Before sending a new command it is mandatory to wait that the XS unit indicates its non busy state by sending the Xon character hexa 11 decimal 17 If a code arrives during the handle of the previous one it can produce an erratic operating mode of the unit or stop it Sefelec SICH XS series operating manual 13 APPLICATION NOTES WHY DIELECTRIC TESTS The dielectric tests are performed in order to detect manufacturing fault on electrical equipment to verify the quality of the insulating material of an electrical equipment to verify that an electrical installation has been correct
72. it indicates in a direct reading with unity display the resistance values from 50 kQ up to 200 GQ 2 TQ in option The ground continuity resistance measurement is performed under current from 5 to 30A AC with open circuit voltages of 6 or 12V AC The XS unit indicates in a direct reading with unity display the resistance values from 1m to 1500mQ RS232C serial interface comes as standard with the XS series and in option the unit can be equipped with PLC input output interface or with a IEEE488 or ETHERNET interface enabling a full remote control by a PC computer Sefelec 24 XS series operating manual Front panel description Ground continuity terminals Power On Off Hipot and Insulation terminals START measurement fig 5 1 Keys definition The front panel unit includes 2 mechanical push buttons 1 red and 1 green together with 9 keys in 3 function areas Any action on a key or a push button is confirmed by an audible signal The green push button starts the test or measurement cycle and the red push button stops the cycle at any time The function keys on the right hand side of the LCD screen select the measurement functions the configuration as well as the memories and the parameter access The meaning of the function key is displayed on the LCD screen right hand side When nothing is displayed the function key is not operating The control keypad includes 4 direction keys and one central ENTER key
73. limit IMAX gt 0 the low limit IMIN is set to 0 e If the measured current is gt or to the IMAX then the test is FAIL breakdown The high limit IMAX gt 0 the low limit IMIN is set to a value lt IMAX e f the measured current is lt IMAX and gt IMIN then the test is PASS otherwise the test is FAIL breakdown or lt IMIN WARNING This detection mode can require between 200 and 300 msec for the limit detection and during this time the current can increase quickly over the limit Fast maximum current limit F ast IMAX Specifications are identical to the IMAX detection mode However in the FIMAX mode the breakdown detection is fastest 20 msec than in IMAX mode because the comparison with the current limit is performed directly by electronic circuits and not by the embedded software The comparison accuracy is lower than the IMAX mode Fast maximum current and variation current limit FIMAX Al This mode combines the FIMAX mode and the Delta mode Sefelec 52 XS series operating manual Maximum current and variation current limit IMAX Al This mode combines the IMAX mode and the Delta mode Without detection In this mode there is no current monitoring There is no output high voltage adjustment according to the load Minimum current limit IMIN In the above detection modes it is possible to set a minimum value of current flowing through the specimen under test to insure tha
74. llowing message INPUT ERROR INPUT PASSWORD LANGUAGE ENGLIS BEEP ON FAIL NO FILTER NURMAl PARAM ACCESS Alp muah lt PAGE 413 fig 6 5 In this example you would get an error because of the dot Then to correct you have to Type a new password Or escape the password set up by clicking on ESC key If the password is not correct the following message will be displayed PASSWORD UNKNOW UT PASSI ANGUAGE EHGL BEEP ON FAIL NO FILTER NORMA i METS UNLOCKED PAGE fig 6 6 Then to correct you can either a Type a new password Or escape the password set up by clicking on ESC key Sefelec 36 XS series operating manual If the password is correct the following message will be displayed UAGE GI ie UNLOCKED and you can select the security level UNLOCKED READ ONLY LOCKED fig 6 7 If you loose your password please contact our service department or your distributor Sefelec service department 33 0 1 64 11 83 48 Measurement display Press on the UP or DOWN arrows to select the next setup menu page DISPLAY TES REMOTE TRIG HO INTERFACE R5232 SEQUENCE AUTO PAGE 52 gt fig 6 8 The DISPLAY function allows inhibiting the display of the digital measurement results only the PASS FAIL result is valid This mode is especially interesting when controlling the unit by an external system RS232C IEEE488 or PLC because it allows reducing the test times W
75. llows to store in 10 memories numbers 0 to 9 measurement parameters voltage threshold time From the measurement menu to modify the memory number Press on the MEM x function key Display shows MEM D KVE e mm IS O SOKUAC WSIHps e 21 T AUTO fig 8 11 With the UP DOWN arrow keys increase or decrease the memory number from 0 to 9 The parameters recall line area 3 of the LCD screen indicates the content of each memory Enter the selected memory either by pressing again on the MEM x function key or by pressing the ENTER key From the parameter menu to modify a memory number Press on the MEM x function key With the UP DOWN arrow keys increase or decrease the memory number from 0 to 9 The input parameters lines indicate the content of each memory Enter the selected memory either by pressing again on the MEM x function key or by pressing the ENTER key WARNING ANY PARAMETER MODIFICATION IS AUTOMATICALLY STORED IN THE MEMORY Sefelec 57 XS series operating manual Expert mode parameters only expert As explained before the expert mode gives more controls to the unit to adapt the behavior of the unit regarding the user s need Breakdown detection mode selection during the ramps INAS RP LIM I RF LIN x lt PRIGE 13 gt fig 8 12 It is possible to select a breakdown detection mode specifically for the ramps The ramps parameters are valid for the rising and falling ram
76. ly done to control the insulation resistance of an equipment or an installation to trace its changes during the years Dielectric tests consist of both insulation resistance measurements and dielectric strength tests GLOSSARY OF TERMS LEAKAGE DISTANCE The smallest required distance measured on the surface of the insulating material between 2 conductive parts to avoid breakdown LEAKAGE CURRENT Steady current flowing through an insulating material subject to high voltage BREAKDOWN The immediate break of the dielectric property of an insulating material Every breakdown creates more or less damages to the insulating material The breakdown tests can be therefore destructive or not INSULATION RESISTANCE Characteristic of an insulating material that being subject to a voltage shows a resistance such as the value of the leakage current which flows through it stays within acceptable limits DIELECTRIC STRENGTH Ratio between the voltage at which a dielectric break of the insulating material occurs and the distance between the two points subject to the voltage generally given in kV cm Regarding the insulating material type solid liquid or gas a dielectric break can be a perforation a flashover or an arc Sefelec 113 XS series operating manual ENVIRONMENTAL INFLUENCES Temperature pressure and humidity conditions have an influence on the dielectric tests results e TEMPERATURE The temperature having an influe
77. modify the memory number Press on the MEM x function key Display shows fig 7 7 With the UP DOWN arrow keys increase or decrease the memory number from 0 to 9 The parameters recall line area 3 of the LCD screen indicates the content of each memory Enter the selected memory either by pressing again on the MEM x function key or by pressing the ENTER key Sefelec 45 XS series operating manual From the parameter menu to modify a memory number Press on the MEM x function key With the UP DOWN arrow keys increase or decrease the memory number from 0 to 9 The input parameters lines indicate the content of each memory Enter the selected memory either by pressing again on the MEM x function key or by pressing the ENTER key WARNING ANY PARAMETER MODIFICATION IS AUTOMATICALLY STORED IN THE MEMORY Insulation resistance measurement Any measurement is performed by using the parameters stored in the active memory see MEMx indication in the LCD screen right hand side Connect the measurement probe and the return lead on the specimen before starting the measurement by pressing on the green MEASUREMENT push button a IL Si U50 UU SH 19 Gu J Kit Te10 5 fig 7 8 IMPORTANT ALWAYS MAKE SURE THAT THE HIGH VOLTAGE INDICATOR RED LAMP IS NOT ON WHEN CONNECTING OR DISCONNECTING THE SPECIMEN In case where a test time is set to 0 the unit remains in the measurement mode permanently until th
78. mory number with the right arrow WOLD ing E GOHM V ID fig 10 8 With the up and down arrow keys increase or decrease the memory number from 0 to 9 Validate the function with its number memory by pressing on the ENTER key Then enter the function and its memory number with the ENTER key Series of tests with manual control By default the proceeding of a sequence is automatic For instance in the case of a sequence including the following lines LINE 1 MEGOHM 3 LINE 2 HIPOT 4 The hipot test will be carried out immediately after the insulation measurement without intervention of the user It is possible to control the step from one function to the other by inserting a pause between the lines The sequence will be as follows Sefelec 74 XS series operating manual LINE MEGOHM LINE PAUSE LINES Su JE VOID lt PAGE 21 gt fig 10 9 How to run a simple sequence From the measurement screen press on MEASUREMENT button WARNING Never touch the specimen under test when it is connected to the unit and the red lamp is ON The tests are performed automatically and each result is displayed at the test end on the corresponding program line At the end of the complete sequence the END OF TEST message is displayed All the test result steps are accessible on the LCD screen Use the UP and DOWN arrow keys to scroll the results and the pages FIN De TEST 39 Mg 19 fig 10 10 Press on DISCH
79. mpting to trigger the measurement mode in a function type which is not the first one of the sequence the following message is displayed SEQUENCE ERROR Escape of the function and select either another function or another sequence mode Sefelec 39 XS series operating manual Example of a sequence setup An operator wants to perform an insulation control on a specimen then a dielectric strength test and finally a new insulation control to verify that the dielectric strength test hasn t degraded the specimen SETUP menu lt page2 gt line SEQUENCE Select the sequence mode M H M Escape with ESC key The unit switches automatically in the insulation test Check that parameters are correct Necessary to select times Press on the MEASUREMENT DISCHARGE push button After the test time the unit switches automatically to the next test if the test result was PASS When an insulation test has to be perform after a dielectric strength test the unit controls the discharge voltage of the specimen and follows its sequence only if the voltage is lower than 100 volts with the display of DISCHARGE CONTROL In case of a fault during the insulation test the number 1 or 2 of the test is displayed At the end of a sequence after release of the result by pressing the MEASUREMENT DISCHARGE push button the unit switches in the first function of the sequence To escape of the SETUP menu press on the function key ESC expert
80. nce on the gas density this one is altering the performances of the liquid or gaseous insulating material The oils often used as insulation are never pure the dissolved quantity of gas increases with the temperature and is decreasing the insulation quality of the oil The large variety of materials used as solid insulation doesn t allow to deduce a general rule on their behavior with the temperature the insulation specifications having a tendency to dissipate when the temperature increases e PRESSURE The withstand voltage in gas changes with the pressure following the Paschen s law This law shows a minimum of the breakdown voltage for a particular value of the pressure by distance product otherwise the more the pressure increases the more the breakdown voltage is high The liquids used as dielectric insulation are influenced by the pressure the dielectric strength increasing with the pressure In theory the solid insulations are a little influenced by the pressure because this one doesn t modify a lot their thickness and their internal composition e HUMIDITY The withstand voltage of gas changes with humidity In example for the air and for values of relative humidity lt 80 the dielectric strength increases a little with the humidity increasing the water molecules more dense than the gas slows down the avalanche phenomena The water presence in an insulating liquid such as oil degrades the dielectric strength by water electrolys
81. ng The first line displays the measurement result And the LCD screen shows fig 10 14 As previously the unit goes in standby waiting for ENTER pressing This is done as many times as the number of test steps if the test results are PASS Otherwise the unit offers to the operator the possibility to re test the FAIL test or to stop the Sequence press on ESC Sefelec 77 XS series operating manual Multiple ground continuity followed by a dielectric strength test automatic sequence MANUAL COMMAND 99 Sma A54 mOTEP 2 L3 Hi Sg WATTING fig 10 15 The case of a multiple continuity immediately followed by a strength test requires a precise care The multiple ground continuity function means that the user sometimes enters the security area or is in direct contact with the specimen under test For that reason in order to protect the user s safety the unit stops the proceeding of the test before starting the strength test At this stage test can be released by 1 The keyboard Press ENTER and then LOW ARROW within 0 5 sec and keep this last key pressed until it is taken into account 2 Using the safety loop If the safety loop is open during or at the end of the multiple continuity test closing of the safety loop will start the strength test Sefelec 78 XS series operating manual Error messages for the Sequence mode message SAFETY LOOP The safety loop is not closed There is no conne
82. nt voltage has not reached its final value On capacitive specimen wait for the end of the charge on resistive specimen check with the current specifications of the power supply message BOARD NOT READY the microprocessor board cannot communicate with the insulation resistance board You cannot perform a measurement get in contact with our Service department 33 1 64 11 83 48 Sefelec 47 XS series operating manual 8 Dielectric strength test hipot test From the initialization menu press on the HIPOT or on the FUNCTION then HIPOT function key to get the menu shown in figure 8 1 The main test parameters are recalled on the bottom line of the LCD screen MEM 0 KUE ro Ir 4eS4KUAC ISFIMAM I THAUTO ESL fig 8 1 Setting To modify these parameters press on the PARAM function key of this menu If the message ACCESS DENIED is displayed please refer to section PARAMETER ACCESS CONTROL Then the display shows vi oe HAUL aping CIC a D E RISE FALL lt PAGE 13 at Ar LOAtnLn gt fig 8 2 Sefelec 48 XS series operating manual Test voltage selection The unit offers the possibility to select dielectric strength test voltages between 0 10 and 5 00 KVAC or 0 10 and 6 00 KVDC The test voltage value selection is done according to the standards Move the reverse video line in front of the VOLTAGE line Press on the RIGHT arrow or ENTER key Display shows MOLTAGE 0 50 KUAC
83. nu to obtain the next screen Sefelec 71 XS series operating manual A sequence describes an automatic or manual see SETUP menu link of measurements or tests Eight program lines are dedicated to the sequence description Each line contains a test a measurement a pause or a repeat function The LCD screen bottom line gives a summarized information on the active sequence memory number in the LCD screen right hand side upper corner A sequence can be considered as a measurement function like the insulation measurement or dielectric strength test A sequence is started or stopped as a measurement function The sequence stops if a measurement or a test result is failed If all the tests pass the sequence result is PASS The contents of each line are described by 2 digits for a function the first digit sets for the type of test M for Megohmmeter H for Hipot G for Ground continuity the second digit referring to the number of the corresponding parameter set The 2 digits feature an empty line the word OK a pause between 2 functions and the operator x a multiple ground continuity test Parameter memorization The unit contains 10 measurement sequences numbered from O to 9 including up to eight different test steps Each step corresponds to a test function associated to a parameter set a pause between two tests or to the operating of several test points at least 2 of the function defined on the previous line mult
84. o be modified by moving the cursor with the RIGHT LEFT arrow keys e Increase or decrease the value with respectively the UP and the DOWN arrow Repeat operation for all the numbers if necessary e Enter the time with the ENTER key Proceed the same way for the RISE and FALL times Sefelec 67 XS series operating manual Parameter memorization XS series unit allows to store in 10 memories numbers 0 to 9 measurement parameters voltage threshold time From the measurement menu to modify the memory number Press on the MEM x function key Display shows fig 9 9 With the UP DOWN arrow keys increase or decrease the memory number from 0 to 9 The parameters recall line area 3 of the LCD screen indicates the content of each memory Enter the selected memory either by pressing again on the MEM x function key or by pressing the ENTER key From the parameter menu to modify a memory number Press on the MEM x function key With the UP DOWN arrow keys increase or decrease the memory number from O to 9 The input parameters lines indicate the content of each memory Enter the selected memory either by pressing again on the MEM x function key or by pressing the ENTER key WARNING ANY PARAMETER MODIFICATION IS AUTOMATICALLY STORED IN THE MEMORY Sefelec 68 XS series operating manual Ground continuity resistance measurement Any measurement is performed by using the parameters stored in the ac
85. of the dielectric material will alter the results In that case the unit indicates its maximum value and takes a long time to come back to the real measured value C The insulation resistance value of a capacitor being a function following a time exponential law it is important to make sense to the measured value to indicate the duration of the measurement The units of the MG series allow complying with this requirement with the built in timer able to measure times going from 1 second up to 16 minutes D Never disconnect a capacitive specimen before switching into DISCHARGE mode and waiting the necessary time to discharge its capacitance through the 2 2 kohms built in resistance of the discharge circuit about 1 second per 100 uF Sefelec 115 XS series operating manual MEASUREMENTS ON CABLES The measurement on cables is similar to the measurement on capacitors The measurement configurations on cables are very varied The measurements have to be performed either between each conductor for multi wires cables either between main conductor and shielding for shielded cables either between the cable and its environment for mono wire cables A In that last case the generally used way is to immerse the cable reel in a water tank called SWIMMING POOL to wait for the water penetration in to the cable reel center and then to perform the insulation resistance between the cable and the water For safety and construction reasons the water
86. of the test probe This fault gives a bad FAIL test result even there is no breakdown message SYNCHRO ERROR the dielectric strength test board is not able to generate the sinusoidal signal which drives the HV transformer You cannot perform a test get in contact with our Service department 33 1 64 11 83 48 message BOARD NOT READY the microprocessor board cannot communicate with the insulation resistance board You cannot perform a measurement get in contact with our Service department 33 1 64 11 83 48 Sefelec 62 XS series operating manual 9 Ground continuity resistance measurement From the initialization menu press on the GROUND or on the FUNCTION then GROUND function key to get the menu shown in figure 9 1 The main test parameters are recalled on the bottom line of the LCD screen HCH U m FARAH I i0 0 A HI SOOnt LO Omni T AUTO ESL fig 9 1 Setting To modify these parameters press on the PARAM function key of this menu If the message ACCESS DENIED is displayed please refer to section PARAMETER ACCESS CONTROL Then the display shows CURRENT eee HI Loi 100m Ont LO LINDI MOLTAGE 124 PAGE SAS fig 9 2 Sefelec 63 XS series operating manual Measurement current selection The unit offers the possibility to select ground continuity test current step of 0 5 A The test current value selection is done according to the standards e Move the reverse video line in fr
87. on For instance MEG HLIM 2 0E 6 new value in Ohms RIG HLIM 1 45E 4 new value in Amps GND HLIM 1 00E 1 new value in milliohm The unity is automatic given in Volt Ohm or Amp and function dependent CBHLIM lt NR3 gt Same command as HLIM but reset the low limit parameter before to change the high limit value LLIM LLIMit lt NR3 gt Sets a new value to the low limit parameter to the parameter set of the running function For instance MEG LLIM 1 0E 6 new value in Ohms RIG LLIM 3 50E 6 new value in Amps GND LLIM 5 02E 2 new value in milliohm The unity is automatic given in Volt Ohm or Amp and function dependent Aa Bb Cc Dd Ee Ff Gg Hh Parameters setting a sequence of 8 tests of the selected memory only for SXS models Each test is defined by 2 letters one for the function M for megohmmeter H HIPOT for strength G GROUND for earth continuity X points for test number in case of multiple earth continuity test P Pause to place a waiting phase between two consecutive tests and L LEAKAGE for leakage current and one digit to indicate the memory number cases M H G L V VO is an empty test The case X is special because it can be followed by one or 2 digits These one indicate the step number of the multiple continuity This number can be set from 2 to 99 Caution All 8 tests must be carried out Enter VO for an empty test For instance SEQ PAR 0 G1 M2 H1 M3 L1 V0 V0 VO Sefelec 105
88. ont of the CURRENT line e Press on the RIGHT arrow or ENTER key e Display shows CURRENT HI LIMIT LO LIMIT UO TAGE PAGE gt fig 9 3 e Select the number to be modified by moving the cursor with the RIGHT LEFT arrow keys e Increase or decrease the value with respectively the UP and the DOWN arrow keys Repeat operation for all the numbers if necessary e Enter the current with the ENTER key If the value is higher than the maximum limits 5 0A 30 0A following error message appears LIMIT ERROR e Enter a correct value or ESC Open circuit test voltage selection 6 or 12 VAC The unit offers the possibility to select ground continuity open circuit test voltage 6 or 12 VAC The test voltage selection is done according to the standards e Move the reverse video line in front of the VOLTAGE line e Press on the RIGHT arrow or ENTER key e Display shows CURRENT HI LIMIT LO LIMIT PAGE SI fig 9 4 e With the UP DOWN arrow keys scroll all the available voltages 6 12 e Enter the selected value with the ENTER key Sefelec 64 XS series operating manual Resistance threshold selection The unit includes two comparison thresholds making possible to check if the specimen under test is good or bad These thresholds can be a resistance or a voltage according to the requirements of standard EN60204 1 The H LIMIT defines the maximum resistance value which is allowed for the specimen under test
89. ps together As mentioned before the breakdown detection modes are AL IMAX AI IMAX OFF FIMAX Al FIMAX WARNING IMAX and IMAX Al modes involve that the current display is actived and the rising or the falling times are greater or equal to 2s IMAX and delta thresholds adjustment during the ramps Refer in this chapter to the paragraphs IMIN and IMAX threshold adjustment and Delta level adjustment how to set the values HEM DU TIME e EE AI RE PAGE S32 fig 8 13 Sefelec 58 XS series operating manual TIME DETECT RE ne RF LIN fig 8 14 Control of the display during the ramps It is possible to have the display of the voltage and or the current during the ramps but select nodisplay of U or provide a better linearity of the ramps fig 8 15 Power mode for 60335 and 60204 standards The European standards EN60335 and 60204 demand that the unit be capable to generate one current of 100mA AC minimum for tests voltages between 500VAC and 4000V AC To be conform set the option 335 204 STANDARD on U RP IIs a d hise UIH T KE Geng fig 8 16 For hipot tests under capacitive specimens set FILTER CAPACITOR inthe menu unit configuration Sefelec 59 XS series operating manual Dielectric strength test Hipot test Any measurement is performed by using the parameters stored in the active memory see MEMx indication in the LCD screen right hand side Connect the measurem
90. r ENTER key Display shows ETE ee K INAS LIMITI bl U0 mA IMIN LIMIT 1 LIMIT lt PAGE 22 gt fig 8 8 Select the number to be modified by moving the cursor with the RIGHT LEFT arrow keys Increase or decrease the value with respectively the UP and the DOWN arrow keys 012345678 9 0123 etc Repeat operation for all the numbers if necessary Enter the threshold with the ENTER key WARNING Start always by setting the IMAX limit The IMAX LIMIT must be always higher than the IMIN LIMIT otherwise an error message is displayed IMAX LIMIT lt IMIN LIMIT e To set the IMIN LIMIT value proceeds the same way as for the IMAX LIMIT WARNING the IMIN LIMIT must be always lower than the IMAX LIMIT otherwise an error message is displayed IMIN LIMIT gt IMAX LIMIT Sefelec 54 XS series operating manual Delta level adjustment The delta breakdown detection level can be adjusted between 1mA 10us and 10mA 10us by 1mA 10us step 50VA models or from 10 mA 10us to 100mA 10us by 10mA 10us step 500VA models To adjust the delta value Move the reverse video line in front of the SEUIL Al line Press on the RIGHT arrow or ENTER key Display shows ET Ar LIMIT MIN LIMIT et LIMIT f PAGE 12 gt fig 8 9 i I Select the number to be modified by moving the cursor with the RIGHT LEFT arrow keys Increase or decrease the value with respectively the UP and the DOWN arrow keys 012345678 901
91. related to the use of high voltage devices ALWAYS MAKE SURE THE HIGH VOLTAGE INDICATOR IS NOT ON WHEN CONNECTING OR DISCONNECTING THE SPECIMENS The XS series unit can be operated from either 115 or 230 volts 10 47 to 63 Hz power line Before connecting the 3 wires power cord SE1 between the unit and AC power source make sure the voltage indicated on the inlet module Z8 is in accordance with the power source For a change of voltage selection proceed as follows Front panel ON OFF switch in the OFF position Remove the power cord SE1 from the inlet module WAIT AT LEAST 5 MINUTES BEFORE PROCEEDING With a small screwdriver remove the selection sub assembly from the inlet module Remove the fuses Take off the pale gray plastic piece Select voltage 110 for a 115 volts main and 220 for a 230 volts main the 240 position is not used Replace the gray plastic piece to display in the window of the selection sub assembly the required voltage Put the right value for the fuses according to the main voltage Replace the selection sub assembly in the inlet module Connect the SE1 power cord Sefelec 29 XS series operating manual Power ON Make sure the voltage indicated on the inlet module Z8 is in accordance with the power source Connect the unit to the mains AC source with earth connection with the SE1 power cord then press the power button in the ON position After a few seconds the LCD screen must display the
92. rement modes For instance CONF FILT CAP DET DETection OFF 1 Fl 1 DELTA Fl DELTA DELTA Hipot function only sets the mode of the breakdown IDE IDElta lt NR3 gt Hipot function Delta breakdown detection value adjustment expert RDET RDETection OFF 1 1 DELTA DELTA FI Fl DELTA Hipot function Selection of the breakdown detection mode during the high voltage rise and fall times Sefelec 106 XS series operating manual expert IMRA lt NR3 gt Hipot function setting of the break detection value IMAX or FIMAX during the high voltage rise and fall times expert IDERA lt NR3 gt Hipot function setting of the break detection value of Delta during the high voltage rise and fall times expert UDISP ON OFF Hipot function Display control of the value of high voltage during the high voltage rise and fall times expert IDISP ON OFF Hipot function Display control of the value of the current during the high voltage rise and fall times MEAS MEASure Runs the current function STOP Stops the current function QUIT Exits the current function SRQ Similar to the Service Request feature of the IEEE488 2 bus this code allows the emission of the Z character to inform the computer about the events end of test format error interlock open This command has to be sent at the program start after the REM command Device queries MEAS Return the current measurement value s regarding the running f
93. rge resistance 1 5 Mohm WARNING Wait enough for the discharge of the specimen capacitance before disconnection from the unit about 8 seconds per uF e The specimen is tested in only 1 polarity e The test voltage must be higher than the one provided with AC test voltage A common rule is to use a 1 4 correction factor between the DC and the AC voltages square root of 2 ratio between the rms value of a sinusoidal wave and its crest value Udc Uac 1 4 BREAKDOWN DETECTION MODE SELECTION The most common and simple leakage current control mode is the threshold current control mode or IMAX mode This mode allows setting a maximum limit of current flowing through the specimen under test above which the unit detects a breakdown and stops the test by cutting off the HV generation and memorizing the voltage value on the LCD screen As described the HV source has to supply the leakage current as well as the reactive current coming from its capacitance Therefore this requires to adjust the breakdown threshold regarding the reactive current of each specimen and to follow the procedure e Make a test on a good specimen e Collect the total current flowing e Adjust the current threshold to a value greater than the total current The XS series units offer the above described detection mode combined with the A I detection mode called sometimes ARC detection mode The Al mode allows to release from the reactive current flowing through th
94. s The syntax of the commands complies with the IEEE488 2 standard 1992 revision IEEE488 2 numerical formats Format NR1 lt digit gt lt digit gt Format NR2 lt digit gt lt digit gt lt digit gt lt digit gt Format NR3 lt digit gt lt digit gt lt digit gt lt digit gt E lt digit gt lt digit gt Note Codes in brackets are expensed codes which can be understood by the unit General commands REM REMote Go to remote mode WARNING first command to be sent For security reasons this command is active only just after power on starting screen displayed GTL GoToLocal Go back to the local mode LLO LLockOut Return to the local mode is locked Common commands SRE lt NR1 gt Service Request Enable Register Enables the corresponding summary messages bits in the status byte register Thus the application programmer can select reasons for the device to issue a service request Z character See STB code ESE lt NR1 gt Standard Event Enable Status Select which event bits in the corresponding Event register will cause a TRUE summary message when set By use of the enable bits the programmer can program the device to request for a single event or an inclusive OR of any group of events CLS Sets all the standard registers in the state the programmer founds them after a power on RST The Clear status command almost resets the apparatus as a power on WARNING
95. s set to a value lt IMAX e If the measured current is lt IMAX and gt IMIN then the test is PASS otherwise the test is FAIL breakdown or lt IMIN WARNING This detection mode can require between 200 and 300 msec for the limit detection and during this time the current can increase quickly over the limit Fast maximum current limit F ast IMAX Specifications are identical to the IMAX detection mode However in the FIMAX mode the breakdown detection is fastest 20 msec than in IMAX mode because the comparison with the current limit is performed directly by electronic circuits and not by the embedded software The comparison accuracy is lower than the IMAX mode Fast maximum current and variation current limit FIMAX Al This mode combines the FIMAX mode and the Delta mode Maximum current and variation current limit IMAX Al This mode combines the IMAX mode and the Delta mode Minimum current limit IMIN In the above detection modes it is possible to set a minimum value of current flowing through the specimen under test IMIN value adjustable from 0 00 mA up to 9 99 mA to insure that the specimen under test is correctly connected Without detection In this mode there is no current monitoring There is no output high voltage adjustement according to the load WARNING Permanent operation on heavy loads in this mode can heat the electronic amplifier The internal fan will start automaticaly to reduce
96. t Memory storage of the breakdown voltage Memory storage of the leakage current in IMAX mode Cut off of the high voltage at the first zero crossing of the control sinusoidal signal of the HV transformer thus without over voltage Timer mode MANUAL The timer is not used during the test The voltage output is manually controlled by pressing on the UP DOWN arrows The test stops when a breakdown occurs or when pressing on the red push button on the front panel mode DEFAULT The timer is not used during the test The voltage output is defined in the parameter VOLTAGE line The test stops when a breakdown occurs or when pressing on the red push button on the front panel mode AUTO The test is defined by three consecutive times during which the output voltage rises linearly up to the preset value RISE time then is hold to the preset value HOLD time and finally bring back to zero FALL time The RISE and FALL times can be set from 0 to 1 sec by 0 1 sec step and from 1 to 999 sec by 1 sec step The HOLD time can be set from 1 to 999sec by 1 sec step Sefelec 13 XS series operating manual 2 DIELECTRIC STRENGTH TEST 500VA hipot 500VA test Output voltage e Alternative 50 or 60Hz DC voltage on XS506 model e From 100V to 5 kVAC in one range 100V to 6 KVDC e Stability lt 3 for AV mains of 10 e Positive pole to earth with DC voltage e Residual lt 1 for Is 100 uA with DC voltag
97. t circuit current e lt 15mA in AC for the maximum voltage adjustment e lt 15 mA in DC for the maximum voltage adjustment Breakdown detection Current variation mode Al The ATEST detector automatically carries out the subtraction between the current which flows normally in the device under test I U Z and the one which occurs at the time of a fault I I Ifault e Amplitude adjustable between 1 mA and 10mA 10 by 1 mA step e Width of current pulse 10u 20 Sefelec 11 XS series operating manual Maximum current limit IMAX Adjustable from 0 01 mA to 9 99 mA by 0 01mA step The unit monitors permanently the current flowing through the sample under test and compares according the 2 following possibilities The high limit IMAX gt 0 the low limit IMIN is set to 0 e If the measured current is gt or to the IMAX then the test is FAIL breakdown The high limit IMAX gt 0 the low limit IMIN is set to a value lt IMAX e If the measured current is lt IMAX and gt IMIN then the test is PASS otherwise the test is FAIL breakdown or lt IMIN WARNING This detection mode can require between 200 and 300 msec for the limit detection and during this time the current can increase quickly over the limit Fast maximum current limit F ast IMAX Specifications are identical to the IMAX detection mode However in the FIMAX mode the breakdown detection is fastest 20 msec than in IMAX mode bec
98. t digit gt lt digit gt Format NR2 lt digit gt lt digit gt lt digit gt lt digit gt Format NR3 lt digit gt lt digit gt lt digit gt lt digit gt E lt digit gt lt digit gt Note Codes in brackets are expensed codes which can be understood by the unit Sefelec 98 XS series operating manual Commands The command set for the IEEE 488 interface is the same as the RS232 It is described with a lot of details in the next subject RS232 interface Sefelec 99 XS series operating manual RS232C interface IMPORTANT The RS232 function must be selected in the SETUP menu page 2 on the line INTERFACE RS232 The test units of the XS series are equipped with a RS232C interface operating in talker and listener modes This option makes possible the integration of any unit of the series in an automatic measurement or test system in manufacturing or incoming inspection department A 9 pins connector is provided on the rear panel for the interface connection The RS232C standard defines electrical specifications for the transmission of serial information The use of the RS232C port requires five lines e Receive data RXD e Transmit data TXD e Data terminal ready DTR e Data set ready DSR e Signal ground GND This interface also requires a cable type CO179 Refer below for the cable wiring FOLD THE BRAIDED WIRES AND TIGHTEN THEM INTO THE CLAMPING RING 1 D a H 3 a 4 q i The
99. t the specimen is correctly connected This mode is independent from the breakdown detection modes To set the detection mode Move the reverse video line in front of the DETECTION line with the UP DOWN arrows keys Press on the RIGHT arrow or ENTER key Display shows HETELT INA LIMIT IMIN LIMIT I LIMIT lt PAGE 12 gt fig 8 7 With the UP DOWN arrow keys scroll the various detection modes available A I IMAX A I IMAX OFF FIMAX Al FIMAX Enter the selected mode with the ENTER key Sefelec 53 XS series operating manual IMIN and IMAX threshold adjustment The unit includes 2 comparison thresholds making possible to check if the specimen under test is good or bad The IMIN LIMIT defines the minimum current value which must flow through the specimen in order to detect a possible bad connection of the test probes on the specimen The IMAX LIMIT defines the maximum current value which is allowed to flow through the specimen under test According to the selected breakdown detection mode a specimen is good PASS if the supplied current is lt IMAX LIMIT and gt IMIN LIMIT otherwise the specimen is declared bad FAIL The thresholds are adjustable from 0 00 mA up to 9 99 mA for 50VA and from 0 00 mA up to 99 9 mA for 500VA A IMIN LIMIT set to 0 00 mA cancels the comparison to the minimum current threshold Move the reverse video line in front of the IMAX LIMIT line Press on the RIGHT arrow o
100. tection values in A I or IMAX modes the unit declares breakdown with cut off of the high voltage at the next zero crossing The display shows SOKUAC DIMA e Z I fig 8 18 The memorized voltage is the breakdown voltage and the leakage current is also memorized and is corresponding to the IMAX value Press on the DISCHARGE red push button to cancel the memorization on the LCD screen The HV indicator goes out Display shows figure 8 1 Press on the ESC key to escape the function Sefelec 61 XS series operating manual Dielectric strength test error messages The following error messages may appear during the measurement message SAFETY LOOP the safety loop is not closed There is no connection between the points 1 9 and 2 10 of the C5 connector of the rear panel Make the connection press again on the MEASUREMENT green push button to trigger the measurement mode message VOLTAGE ERROR the test voltage has not reached its final value impedance of the specimen under test too low in DC voltage wait for the end of the charge in AC voltage check with the current specifications of the power supply In case of over heating a built in thermal switch cuts off the high voltage generator Wait for 3 5 minutes before going on message I lt IMIN during the HOLD time the leakage current flowing through the specimen under test has not reached the minimum value set by the IMIN parameter possible bad connection
101. test 100 1U CAPACITANCE mode from 1 00MQ to 200GQ or 2 TQ for option 20 with an accuracy equal to the NORMAL mode accuracy 100kQ Input impedance 10 MQ 1 Sefelec 19 XS series operating manual Measurement threshold The megohmmeter function can operate either with one or two measurement threshold s between 50kQ up to 200GQ 2TQ with option 20 A measurement is PASS after comparison between the displayed value and the thresholds When looking for a value only higher than a limit the LOW THRESHOLD is used to set the limit and the HIGH THRESHOLD is not used by setting a value equal to the maximum resistance basically 200GQ When looking for an insulation resistance higher than a limit but not too much high which can means that the specimen is not correctly connected then the LOW THRESHOLD is set the minimum insulation value expected and the HIGH THRESHOLD is set to the maximum insulation value expected Setting examples LOW MEASURED HIGH Result THRESHOLD value THRESHOLD 10 MQ 15 4 MQ 200 GQ PASS insulation gt LOW limit 10 MQ 9 0 MQ 100 MQ FAIL insulation lt LOW limit 55 MQ 63 2 MQ 80 MQ PASS insulation gt LOW limit lt HIGH limit 45 MQ 110 GQ 75 MQ FAIL insulation gt HIGH limit threshold not active Timer The measurement voltage can stay permanently timer value set to 0 sec or during a time between 1 and 999 sec adjustable by 1 sec step
102. tie el RE EN le te EI tre ss Sawa oe a note eee aia eta ore eR asta estes la te Oh Sia 33 kang age SESE OM EE 33 Beep on FAIL HEET 34 Filtering configuration for Capacitive spechmen 34 mode CAPA CIT EE 34 mode R H TIME Real Hold Tmel EE 34 mode NORM EE 34 Access control to the parameters EEN 35 Sefelec 6 XS series operating manual faccess UINEOCK ED ici cuir ae Cer ae eee Rua ab ai aa ee uted as 35 LEE Ee 35 access EOC EE terre 35 Password DRETTEN eeneg eeneg lee engel eege eege eege e 35 Measurement display asc cecice sence sinner eserves van caieseian Eege EEEE vanidceseaiemd en cea nie an Menem dee 37 tege Le Tee EE 38 Electrical connection EE eege 38 Interface selection EE 39 Sequence selection Option BEE 39 EXPERT mode Activati M neicinrcce nia a A a a a a a 40 7 Insulation resistance measurement ENEE 41 Parameter SettiNg esanei eai E A A A A A 41 Measurement voltage selection EE 42 Measurement threshold eelechon 42 te op rA O endiech ee a EAA EA SEE A EEEa 43 Parameter memortzaton 45 Insulation resistance measurement EEN 46 EEGEN 47 8 Dielectric strength test hipot Test 48 ln EE 48 Test voltage selection aise 5 cence credited de nace cuits doasdtee Grete e hashed detain tnideicdaed tepedesemennsae 49 Test voltage application on the specimen EE 50 Moser the HOLD Ee 50 To setthe RISE and RAL E e EE 51 Breakdown detection mode selection ENEE 52 KRESCHEL Ee 52 Maximum current limit IMAX cccc
103. tive memory see MEMx indication in the LCD screen right hand side Connect the measurement leads on the specimen before starting the measurement by pressing on the green MEASUREMENT push button In the following example the thresholds are in ohm Priority is given to the resistance measurement the voltage drop is recalled in a small window in the right hand side LCD screen corner If the thresholds are set in volts the R and U display windows are exchanged if Ge UH SH 100m Sp H m Mas fig 9 10 If the AUTO test time has been selected every second the value of the RISE time counts down one unit then the value of the HOLD time and at least the value of the FALL time When the FALL time reaches 0 the output current is cut off automatically According to the resistance value during the test time in comparison with the H LIMIT and L LIMIT limits the red LED FAIL or the green LED PASS is illuminated At the end of the test the unit cut off the current and END OF TEST appears at top of the screen FIN DE TEST m 0 334 v lm 7 zs UD SH 100m SB Omit TSAUTO fig 9 11 e Press on the DISCHARGE push button e Press on the ESC key to escape the function Sefelec 69 XS series operating manual Ground continuity measurement error messages The following error messages may appear during the measurement message OVERRANGE The ground continuity resistance is greater than the unit measurement specificat
104. totale 1 km x Length 100 Mohm km For the same cable with 10 wires the value for 1 wire will be 100 Mohm km x 10 1000 Mohm km C The insulation resistance value of a cable being a function following a time exponential law it is important to make sense to the measured value to indicate the duration of the measurement The units of the MG series allow complying with this requirement with the built in timer able to measure times going from 1 second up to 16 minutes MEASUREMENT VOLTAGE SELECTION The insulation resistance measurements intending to verify that materials or equipments comply with standard requirements it is important to refer to these standards to select the voltage The standard voltages are generally 50 100 250 500 VDC In case of no standard select a 100 VDC value When measuring on capacitive specimens and when studying the voltage influence on the insulation resistance values it is important to start always with the lowest voltage and then to follow the measurements in increasing the voltage A procedure in the reverse way could give incoherent results Sefelec 116 XS series operating manual DIELECTRIC STRENGTH TESTS The dielectric strength test is intended to stress components and sub assemblies of electrical equipments and to check that the leakage lines either between points or between points and ground are correctly designed according to the used technology The principle of a dielectric strengt
105. tween Umin and Umax Logical state LOW no voltage Output Logical state HIGH closed contact Logical state LOW opened contact Sefelec 83 XS series operating manual Connections The Input Output signals are available on the unit rear panel on screw terminals C6 and C7 Warning each screw terminal has a key to avoid wrong connection Connector C6 1 INO10V 2 OUTO10V 3 GND10V 4 25V 5 COMIN 6 CTRLIN 7 INO 8 Ni 9 N2 10 N3 fig 12 1 Internal 25VDC power supply none regulated and protected by Polyswitch fuse with a maximum current of 1A If the Polyswitch breaks the circuit in case of over current please reduce the external current consumption and wait for a few minutes before trying again DTR input not used in the XS series Don t connect any signal on that pin Sefelec 84 XS series operating manual Description of the input output signals COM_IN electrical common between input signals COM_OUT electrical common between output signals CTRLIN input request for remote control of the measurement unit TYPE input selection of the measurement function DXS models only Logical state HIGH Megohmmeter Logical state LOW Strength Test MES DCH input selection of the measurement or discharge state Logical state HIGH Measurement Logical state LOW Discharge NO N1 N2 N3 input binary coded data lines for the number of the param
106. unction A Following characters in the function Insulation OHM 4 700E 06 Dielectric strength VOLT 9 900E 02 AMP 7 000E 05 Continuity OHM 3 210E 1 VOLT 2 810E 00 main unit OHM Continuity VOLT 2 830E 00 OHM 3 230E 1 main unit VOLT B Following characters in sequence mode For instance L1 CO 0 15mQ 0 00V L2 RO 1 50KV 0 02mA L3 MO 41 7 GQ L4 F0 q 0 01mA 223V A2 L5 L6 L7 L8 The syntax rules are the following e the end of the message is CR Carriage Return e each test step starts with a L and ends with except for the last one Sefelec 107 XS series operating manual the L letter is followed by a number between 1 and 8 giving the test step number and then by a space then comes a letter according to the type of the test step French English Function Insulation M M M Dielectric strength R H Continuit C G Void R Ee Pause OK OK the measurement type is followed by the memory number which contains the measurement parameters then by a separator character if the test step is void the measurement will be replaced by a space otherwise the next character gives the test step result e Space indicates that the test is good e q indicates that the test is bad for the insulation and dielectric strength tests the previous character is followed by 1 space and for the ground continuity test by 2 space th
107. utions for the use of units connected to the mains must be taken during its use In particular this unit must be connected to earth The specifications of this manual the correct operation of the unit as well as the operator s security are guaranteed only when the supplied accessories are used The measurement probes can include limitation or protective elements therefore it is forbidden to modify without written agreement from SEFELEC Company In case of use under other conditions than the one specified in this manual the security of the user will be in danger Except for the ground continuity function this unit can supply voltages and currents which could be lethal Comply with the safety regulations related to the use of high voltage devices ALWAYS MAKE SURE THE HIGH VOLTAGE INDICATOR IS NOT ON WHEN CONNECTING OR DISCONNECTING THE SPECIMENS MEANING OF THE DIFFERENT SYMBOLS ON THE INSTRUMENT Warning See document attached Warning risk of electric chock DC voltage AC and DC voltages AC voltage Earth connection Do not connect to earth Sefelec 23 XS series operating manual PRODUCT OVERVIEW The XS series is a range of units performing very easily insulation resistance measurements dielectric strength tests and ground continuity tests The RXS50 56 and RXS500 506 are dielectric strength testers under 50VA or 500VA and the DXS50 56 and DXS500 506 are dielectric strength testers under 50VA or 500VA
108. w resistance measurement except that it has to be performed with a high current mostly in AC The principle is to flow a current between each metallic accessible parts and the protective earth connection to measure the voltage drop between the 2 parts and to check with the Ohm s law that the equivalent resistance is lower than the standard required value Current selection The measurement current is defined by the safety standards which have to be used for each product According to the main standards this high current is comprised between 10 and 25 A AC or equal to 2 times the nominal operating current of the device The choice is justified by the fact that the protective earth connections have to be able to flow the fault current for the maximum value of the unit operating current and this during the reaction time of the other protective devices fuses breakers etc Voltage selection This is the open voltage of the current generator used for the measurement This voltage mostly given by each safety standards is mandatory a low value lower than the threshold defining a hazardous voltage but it must allow the measurement current flowing taking care of the voltage drops between the generator and the measurement points The open voltages are comprised between 6 and 12 AC volts Test time Unlike a simple resistance measurement the time that the current is being flowing for the ground continuity measurement is important because
109. wered a t is possible to connect a RED GREEN lamp CO160 XS on the rear connector C5 in order to indicate in a visible way if the HV is ON or OFF on the outputs of the unit Sefelec 30 XS series operating manual Connection to a specimen Connection for the insulation resistance measurement and dielectric strength test any model fig 5 5 Connect the measurement probe TE54 on the B1 connector Secure the probe by tightening the knurled plastic ring Proceed the same way for the return probe CO175 on the B2 connector Connect the specimen to be tested as shown on the picture Specimen to be tested fig 5 6 Guard cable Only necessary in Insulation resistance measurement for high values R gt 100 Gohms WARNING the voltage can reach 1000VDC Sefelec 31 XS series operating manual Connection for the ground continuity measurement fig 5 7 e Connect the measurement probe CO183 or CO184 on the UA IA UB IB safety banana terminals GREEN terminal CURRENT GREY terminal VOLTAGE e Connect the specimen to be tested as follows fig 5 8 WARNING measurement of a specimen already connected to the earth When measuring a ground continuity on specimen already connected to the earth it is mandatory to keep the accuracy specifications not to connect the IB and UB terminals label with a cross over the earth symbol to the specimen side connected to the earth Sefelec 32

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