V - Chauvin Arnoux
Contents
1. Dss PI m m PI The measurement is started by pressing START STOP and stops automatically when the PI ratio has been calculated i e after 10 minutes the time for measuring JotalRunTime___00 10 00 the second insulation resistance value needed for the calculation the sample times Manual Stop can be modified with the A V gt and 4 keys Manual Stop DD Duration Sample Remark in this mode the DAR ratio will also be calculated automatically if the h m m s times needed to calculate it are less than the second time needed to Timed Run 02 30 00 10 calculate the PI ratio Timed Run DD DAR s s 30 60 1 0 10 Important remarks What is the DD Dielectric Discharge index In the case of multilayer insulation if one of the layers is defective but the resistance of all the others is high neither the quantitative insulation measurement nor the calculation of the and DAR quality ratios will reveal the problem This makes it judicious to perform a dielectric discharge test from which the DD term can be calculated This test measures the dielectric absorption of heterogeneous or multilayer insulation and disregards parallel surface leakage currents It involves applying a test voltage for long enough to electrically charge the insulation to be measured typically a voltage of 500 V is applied for 30 minutes At the end of the measurement the instrument causes a rapid discharge during which th2. Range 500 V V 600 500 400 300 200 100 0 0 01 0 1 1 Range 1000 V ia 1000 A 800 600 400 200 0 TTT 0 01 0 1 1 10 Range 2500 V 3000 2 2506 2000 1500 1000 500 o 4 a T 0 01 0 1 1 10 Range 5000 V 6000 5000 4000 L 3000 2000 W E s L 0 01 W Calculation of the DAR and PI terms Specified range Resolution Accuracy 0 02 50 00 5 1 ct 0 1 1 W Calculation of the DD term Specified range 0 02 50 00 Accuracy 10 1 ct W Capacitance measurement after discharge of tested element Specified measurement range 0 005 9 999 uF 10 00 49 99 uF Accuracy x 1096 1 ct 7 3 POWER SUPPLY The instrument is supplied by NiMH rechargeable batteries 8 x 1 2V 3 5 Ah External charging 85 to 256 V 50 60 Hz Minimum battery life as per IEC 61557 2 Test voltage 500V 1000 V 2500 V 5000 V Number of 5 s measurements on nominal load with 25 s pauses 6500 5500 4000 1500 between measurements Mean battery life Assuming 1 minute DAR measurement 10 times a day and a 10 minute measurement 5 times a day the battery life will be approximately 15 working days or 3 weeks Charging time 6 hours to recover 10096 capacity 10 hours if the battery is completely run down 0 5 hours to recover 1096 capacity battery life approximately 2 days Remark it is possible to charg
3. 5 2 STEP FUNCTION MODE ADJ STEP This test is based on the principle that an ideal insulation produces the same resistance whatever test voltage is applied Any negative variation of this resistance therefore means that the insulation is defective the resistance of defective insulation decreases as the test voltage increases This phenomenon is barely observed with low test voltages In consequence at least 2500 V should be applied The usual test condition is a voltage increasing in steps 5 1 min steps Assessment of the result a a deviation of the resistance f test voltage curve that exceeds 500 ppm V generally indicates the presence of mould or other deterioration larger deviation or a sudden drop indicates the presence of localized physical damage arcing perforation of the insulation Procedure Inthe SET UP menu select Set Step Function 1 2 or 3 Example here step function n 3 W Define the step function and the sample interval is automatically adjusted W Once step function is defined set the switch to Adj Step and select Step Function n 3 using the A or V key W Start the measurement by pressing START STOP W During the measurement the following screens can be accessed by pressing the DISPLAY key 8 E A 234 5 MO A 234 5 MO 999 V 224 6 pA 999 V 224 6 pA Remainning Time 00 14 30 Remainning Time 00 14 15 AR MO AM 300 V ko Ga Ta SE 10100 1 101
4. 25 5 2 step function mode Adj Step EE 26 Molzelidc 28 6 1 RS 232 charactenstiCS DE S 28 6 2 Storing recalling measurement results MEM MR KEN 28 6 3 Printing measured values PRINT Key tna nnne enitn nna tma tnnt a N anms natns ENEA oa Rea AEREE 29 7 SPECIFICGATIONS anssen M 34 7 1 eeleren EE 34 FN Characteristics per TUNCTION ecc 34 7 3 ie TT 37 Environmental cORGItIOEIS stennis earn e ey ee bend oat dee mee 37 7 5 Constr ction speclficatiOns sssrinin a ea aaa aaa deneda aparan espa dE A Eed Ra RR LE E x EE exa 37 7 0 Compliance with international standards enden erede oa Feria duende ay daa xao 38 1 7 Variations within domain Of TT 38 8 MAINTENANGE 39 8 1 SEMICING AAA ATE aeeai 39 82 ERR ee ee 39 8 3 39 9 WARRANTY d 40 10 TOP ORDE mE 41 ACCESSORIES C a tbe deden A ve hen ae A Al ee eee leed eee 41 10 2 Replacement saver cseseccseveexeadeccsaaceciadsezeatvsetcaasieenessedesiadscassuedecaacedhuasivensiicaaiheceahanesdaslacesaecadeasedpeassgedessedea
5. 400 999 GO 2 000 4 00 p 9 1 000 3 999 GQ 39 99 GO 399 9 GO 1 000 1 999 TO 3 999 TQ 9 99 TO W Precision and resistance range in variable adjustable voltage mode Max resistance measured test voltage 250 pA e UM Min measured resistance measured resistance 1000 kQ 30k Nas EE 160 0 GO 640 0 GO 2 080 6 40 TQ 640 0 Go 2 040 TO 6 00 TO 10 00 TO Note the precision in variable mode must be interpolated from the precision tables provided for fixed test voltages WB Measurement of DC voltage during insulation test Specified measurementrange 40 0 99 9 V 100 1500 V SOON During the measurement the maximum acceptable voltage the terminals is or U peak U nominal 1 1 dISt where dISt 3 10 or 2096 WB Measurement of DC voltage during discharge phase of an insulation test Specified measurement range 25 5100 V Resolution 0 2 Un Typical curves test voltage versus load
6. AT for R 2 10 Correction to On to perform the calculation W The calculation is performed immediately and the result is displayed Rc Bpel This indicates what the measurement result would have been at the reference temperature Use the A V and 4 keys to modify the temperatures To assign this calculation or only the Probe Temperature to the measurement result press 2nd T again OK is then displayed Remarks W During the procedure pressing the DISPLAY key or turning the switch cancels the modifications If the coefficient AT used for the calculation is not known the instrument can calculate it in advance using at least 3 stored measurements made at different temperatures see 4 5 3 W Detail concerning the calculation performed The insulation resistance varies with the measurement temperature This dependence can be approximated by an exponential function Re KT RT where Rc insulation resistance at reference temperature RT insulation resistance measured at T C Probe Temperature KT coefficient at T C defined as follows KT 1 2 Rc Reference Temperature T AT with T temperature at the time of the measurement Probe Temperature AT temperature difference at which the insulation resistance is halved Rc Reference Temperature temperature for which the temperature corrected resistance Rc is calculated 4 4 Y SMOOTH KEY The SMOOTH secondary function activates deacti
7. te SEENEN P01295172 RS 232 cable to printer DB 9F DB 9M NOOT sccccccissscccsesccssscicetsaceavessuscaaseeseanadeesedbacessaceeuacniseasdieadssedoanstsatasstceateaeties P01295173 Mains power supply cable 2P reor ner Ai ed in eed P01295174 GROUP CHAUVI ARN N OUX 02 2015 Code 689646C02 Ed 2 DEUTSCHLAND Chauvin Arnoux GmbH OhmstraBe1 77694 Kehl Rhein Tel 07851 99 26 0 Fax 07851 99 26 60 UNITED KINGDOM Chauvin Arnoux Ltd Unit 1 Nelson Ct Flagship Sq Shaw Cross Business Pk Dewsbury West Yorkshire WF12 7TH Tel 01924 460 494 Fax 01924 455 328 ITALIA Amra SpA Sant Ambrogio 23 25 20846 Macherio MB Tel 039 245 75 45 Fax 039 481 561 OSTERREICH Chauvin Arnoux Ges m b H Slamastrasse 29 2 4 1230 Wien Tel 01 61 61 9 61 0 Fax 01 61 61 9 61 61 SCANDINAVIA CA Matsystem AB Sj flygv gen 35 SE 18304 TABY Tel 46 8 50 52 68 00 Fax 46 8 50 52 68 10 SCHWEIZ Chauvin Arnoux AG Moosacherstrasse 15 8804 AU ZH Tel 044 727 75 55 Fax 044 727 75 56 HE BOR RARI D CERE 381 573 530 Tel 86 21 65 21 51 96 Fax 86 21 65 21 61 07 ESPANA Chauvin Arnoux Ib rica S A C Roger de Flor 293 1a Planta 08025 Barcelona Tel 90 220 22 26 Fax 93 459 14 43 MIDDLE EAST Chauvin Arnoux Middle East P O BOX 60 154 1241 2020 JAL EL DIB Beirut LEBANON Tel 01 890 425 Fax 01 890 424 USA
8. PI 1 0m 10m see ko q MO 4 GO 4 TO Capacitance 10 100 10 100 10 100 10 Available information Insulation resistance Insulation resistance Measured voltage Measured voltage Measured current Measured current Elapsed test duration Elapsed test duration Resistance bargraph DAR PI capacitance After the measurement 8 FIXED VOLTAGE 234 5 MO 0 1 V 507 V 224 6 pA 500 V 0 0 Hz 24 6 pA Elapsed Time 01 02 43 AC DAR 30s 60s 2 64 PI 1 0m 10m 1 05 Input voltage 0 1 V AC V Capacitance 320nF Frequency 0 0 Hz 0 250 500 750 1000 Input current 24 6 pA 100 vty a Doa ala a Date 24 06 2008 Time 15 31 Available information First screen Press on DISPLAY 2nd press on DISPLAY Insulation resistance Selected test voltage Input voltage Measured voltage Input voltage Frequency Measured current Frequency Input current DC only Elapsed test duration Input current DC only Voltage bargraph DAR PI capacitance Date time B MANUAL STOP DD mode Before the measurement 8 FIXED VOLTAGE 500 V 0 0 Hz 24 6 pA AC Input voltage 0 1 VAC V Frequency 0 0 Hz 0 4 250 500 750 1000 Input current 24 6 pA 100 rt uti 4 Date 24 06 2008 Time 15 32 Available information Selected test voltage Input voltage Input voltage Frequency Frequency Input current DC only Input current DC only Voltage bargraph Date time During the
9. Primary function store measured values Secondary function recall stored data 2 3 DISPLAY 2 3 1 GRAPHIC DISPLAY UNIT The display unit is a graphic display unit with a resolution of 320 x 240 pixels It has a built in backlighting that can be activated or deactivated using the 7 We key The various screens that are accessible are presented and explained throughout this manual We explain below however the various symbols that may appear on the screen 2 3 2 SYMBOLS REMOTE Indicates that the instrument is controlled remotely via the interface In this mode all of the keys and the rotary switch are inactive except for shutdown of the instrument OFF position COM Indicates that the instrument is sending data to the printer via the interface 2nd Indicates that the secondary function of a key will be used 9 Indicates that the programmed time test mode was selected before the measurement was started DAR Indicates that the automatic calculation of Dielectric Absorption Ratio mode was selected before the measurement was started PI Indicates that the automatic calculation of Polarization Index mode was selected before the measurement was started DD Indicates that the automatic calculation of Dielectric Discharge Index mode was selected before the measurement was started SMOOTH Indicates that smoothing of the insulation resistance indication is activated ALARM Indicates that the alarm is enabled An audible alar
10. see 4 5 W Data format 8 data bits 1 stop bit no parity protocol W Connection to the serial printer DB9F gt DB9M 222 535 323 626 434 828 W Connection to a PC or to a parallel printer DB9F gt 23 535 322 624 426 827 Note check that there is no connection between pins 6 and 8 of the RS232 port of the instrument 6 2 STORING RECALLING MEASUREMENT RESULTS MEM MR KEY 6 2 1 MEM PRIMARY FUNCTION STORAGE This function is used to store the results in the instrument s RAM The results can be stored at addresses identified by an object number OBJ and a test number TEST An object represents a box in which 99 tests can be stored An object can thus represent a machine or an installation on which a number of measurements are performed m When the MEM key is activated the following screen is displayed Store MEMORY ObjTest Date Tim Fet The flashing cursor identifies the next free Obj Test location here 13 59 Ga gt TET 2550V 1358 28042009 09 00 1020V6 It is always possible to modify Obj Test to another free address using the A V 0203 14042009 1507 510V gt or 4 keys 0202 14042009 1504 1020V 0201 14042009 14 56 5000V 2 0102 01 04 2009 1043 510 If an empty Obj is selected Test is set to 01 Press the MEM key again to store the 0102 01 04 2009 1038 current measurement results at the selected free location MEMORY To store at an already occupie
11. Chauvin Arnoux Inc d b a AEMC Instruments 200 Foxborough Blvd Foxborough MA 02035 Tel 508 698 2115 Fax 508 698 2118 http www chauvin arnoux com 190 rue Championnet 75876 PARIS Cedex 18 FRANCE T l 33 1 44 85 44 85 Fax 33 1 46 27 73 89 info chauvin arnoux fr Export T l 33 1 44 85 44 38 Fax 33 1 46 27 95 59 export chauvin arnoux fr
12. MODE key is to select the Range of the current automatic default or fixed Number s 2 3 J Press the MODE key then the gt key to select the Range then the A or V key to modify it The choice of Range of current is validated by pressing the MODE key again The choice remains active until the switch is turned In the Adj Volt position the MODE key can be used to modify the voltage value during the measurement 4 1 3 SECONDARY FUNCTION The PRINT secondary function is described in 6 3 Printing of measured values 4 2 DISPLAY GRAPH KEY 4 2 1 PRIMARY FUNCTION DISPLAY This key is used to browse through the various accessible screens containing all information available before during or after the measurement The screens vary depending on the mode selected before the measurement is started B MANUAL STOP mode Before the measurement E FIXED VOLTAGE 0 1 500 V 0 0 Hz 24 6 pA AC Input voltage 0 1 V Frequency 0 0 Hz 0 4 250 500 750 1000 Input current 24 6 pA 100 l p il Date 24 06 2008 Time 15 32 Available information Selected test voltage Input voltage Input voltage Frequency Frequency Input current DC only Input current DC only Voltage bargraph Date time During the measurement LB A 234 5 MO A 234 5 MO 507 V 224 6 pA 507 V 224 6 pA Elapsed Time 00 00 43 Elapsed Time 00 00 43 DAR 30s 60s
13. Time 00 10 00 Input voltage 0 1 VAC Frequency 0 0 Hz Input current 24 6 pA Date 24 06 2008 Time 15 32 DD 0 1 V 0 0 Hz V 0 100 250 500 24 6 pA 750 1000 Available information Selected test voltage Programmed test duration Input voltage Frequency Input current DC only Insulation resistance Measured voltage Measured current Test duration DAR PI capacitance Current for the calculation Date time of DD DD DAR mode Before the measurement DAR DAR B FIXED VOLTAGE 0 1 500 V 0 0 Hz 24 6 pA Test Run Time 00 01 00 Input voltage 0 1 V AC Frequency 0 0 Hz Input current 24 6 pA Date 24 06 2008 Time 15 32 2nd press on DISPLAY Input voltage Frequency Input current DC only Voltage bargraph Available information Selected test voltage Input voltage Programmed test duration Frequency Input voltage Input current DC only Frequency Voltage bargraph Input current DC only Date time During the measurement DAR DAR A 234 5 MO A 234 5 5007 V 24 6 pA 5007 V 24 6 pA Remaining Time 00 00 43 Remaining Time 00 09 43 DAR 30s 60s PI 1 0m 10m Sep 4 MQ 4 GO 4 TO Capacitance 10 100 10100 10 100 10 Available information Insulation resistance Insulation resistance Measured voltage Measured voltage Measured current Measured current Remaining test duration Remaining test durati
14. measurement E S A 234 5 MQ A 234 5 MO 507 V 2246pA 507V 224 6 pA Elapsed Time 00 00 43 DAR 30s 60s PI 1 0m 10m MQ TO Capacitance 1 1 1 10100 10100 10100 10 DD cartent ip m o DD Available information Elapsed Time 00 00 43 Insulation resistance Insulation resistance Measured voltage Measured voltage Measured current Measured current Elapsed test duration Elapsed test duration Resistance bargraph DAR PI capacitance Current for the calculation of DD DD After the measurement 8 E FIXED VOLTAGE 234 5 MQ 500 V 0 1 V 507 V 224 6 pA 0 0 Hz 24 6 pA Elapsed Time 00 22 43 Ai DAR 30s 60s 2 24 V PI 1 0m 10m 1 56 Input voltage 0 1 V AC Capacitance 220nF Frequency 0 0 Hz 0 un 250 500 750 1000 DD current 11 55 pA Input current 24 6 pA Lala a Doa iti DD 2 55 Date 24 06 2008 Time 15 32 Available information Insulation resistance Measured voltage Measured current Elapsed test duration DAR PI capacitance Current for the calculation of DD DD Selected test voltage Input voltage Frequency Input current DC only Date time TIMED RUN mode Before the measurement 8 ADJUSTABLE VOLTAGE 2 0 1 V 2300 V 0 0 Hz 24 6 pA Test Run Time 00 10 00 Input voltage 0 1 V AC V Frequency 0 0 Hz 499 250 500 750 1000 Input current 24 6 pA 79 li Date 24 06 20
15. selected a start printing press the PRINT key again m To exit without printing turn the rotary switch stop printing turn the rotary switch The printing of each group of data is reduced to the main results Depending on the measurements performed the following models are obtained W All measurements except step function measurements CHAUVIN ARNOUX C A 6549 Instrument number 700 016 Eu VE ele RE le d KEE OBJECT 01 TEST 01 INSULATION RESISTANCE TEST Date 30 04 2009 Starting time 14h55 Duration 00 15 30 Temperature 23 C Relative humidity Saale 90 Test voltage 1000 V Insulation resistance 385 GOhm Rc calculated resistance118 5 GOhm at reference temperature 40 C with AT for R 2 10 C DAR 1 30 1 234 PI 10717 2 345 DD 110 nF OBJECT 01 TEST 02 INSULATION RESISTANCE TEST Date 28 04 2009 Starting time 17h55 Duration 00 17 30 Temperature 23 C Relative humidity waer YO Test voltage 1000 V Insulation resistance 385 GOhm Rc calculated resistance118 5 GOhm at reference temperature 40 C with AT for R 2 10 C DAR 1 30 1 234 PI 10717 2 345 DD 110 nF etc Date of next test thal Meee Remarks iret tnnt is Operator el IC W Step function measurement CHAUVIN ARNOUX C A 6549 Instrument number 700 016 elle D
16. voltage using the gt key then the A or V keys Calculate AT from Memory 2 tMaximum Output Voltage 5100V Set Defaut Parameter This function prohibits the use of certain test voltages for the insulation measurement Clear Memory V Disturbance V Output 3 PPA Buzzer On The instrument can then be used by less experienced persons for specific Power Down On applications telephony aeronautics etc where it is important not to exceed some BaudRate 9600 RS 232 maximum test voltage For example if the maximum output voltage is set to 750 V the measurement will be made at 500 V in switch position 500 V and at not more than 750 V in all other positions 4 6 LIST OF CODED ERRORS If an anomaly is detected when the instrument is started up or in operation the display indicates an error code The format of this error code is a 1 or 2 digit number This number identifies the anomaly and the action to be taken Error 10 There is an error in the user memory for storing measurement data Use Clear Memory then Clear All in SET UP to initialise the memory Attention all stored data will be lost Error 21 There is an error in the user settings Use Set Default Parameter in SET UP to initialise the settings Error 25 There is an error in the printer file format A new format must be loaded into the instrument If the error message Memory not initialized is displayed proceed as described in Error 10 All other errors requ
17. 0 1 0 10 During the execution of a timed run test the intermediate samples are automatically stored they are used to plot insulation resistance vs time This curve can be displayed after the measurement by pressing the GRAPH key as long as no new measurement has been started The samples are automatically stored with the final value of the resistance if it is stored During the measurement if the position of the rotary switch is changed or the STOP key is pressed the measurement is stopped m TIMED RUN DD MODE This mode is identical to the previous one except that 1 minute after the end of the JotalRunTime__02 30 00 measurement the instrument calculates and displays the DD term Manual Stop The measurement duration is therefore duration of timed run 1 minute Manual Stop DD Duration Sample The insulation resistance vs time curve can be displayed after the measurement h m m s by pressing GRAPH as long as no new measurement has been started Timed Run 02 30 00 10 DAR s s 30 60 m m 1 0 10 W DAR MODE The measurement is started by pressing START STOP and stops automatically Total Run Time 00 01 00 when the DAR ratio has been calculated i e after 1 minute the time for measuring Manual Stop the second insulation resistance value needed for the calculation the sample time Manual Stop DD can be modified with the A V gt and 4 keys Duration Sample h m m s Timed Run 02 30 00 10 Timed Run DD
18. 00 1 10100 10 AR R AV mmm W At end of the measurement the following results are indicated SET UP Instr Nr 700016 SW Version 1 8 PI m m 1 0 10 Set Step Function 1 Set Step Function 2 Set Step Function 3 Temperature Unit Celsius Defaut Probe Temperature 23 Rc Reference Temperature 40 AT for R 2 10 SET UP Step Function 3 Step Voltage Duration h m EN 1000V 00 01 2 2000V 00 02 3 3000V 00 03 4 4000V 00 04 5 5000V 00 05 Total Run Time h m 00 15 Sample Time m s 00 30 8 STEP FUNCTION 3 Min 1000 V r Max 5000 V Test Run Time 00 15 00 Input voltage 0 1 V DC Frequency 0 0 Hz Input current 24 6 nA Date 24 06 2008 Time 15 31 m the difference AR in insulation resistance between the resistance at the highest test voltage and the resistance at the lowest test voltage the difference AV between the highest and lowest test voltage the slope of the curve in ppm V the capacitance W Pressing the GRAPH key displays the resistance versus time curve Using the 4 and gt keys it is possible to move along the curves and view the exact values of each sample 6 MEMORY RS 232 6 1 RS 232 CHARACTERISTICS W The baud rate can be set to 300 600 1200 2400 4800 9600 or Parallel for printing on parallel printers via the optional serial parallel adapter This adjustment is performed in the SET UP menu
19. 08 Time 15 32 Available information Selected test voltage Programmed test duration Input voltage Frequency Input current DC only Date time Input voltage Frequency Input current DC only Voltage bargraph During the measurement 8 A 234 5 MO A 234 5 MO 2307 V 24 6 pA 2307 V 24 6 pA Remaining Time 00 09 43 Remaining Time 00 09 43 DAR 30s 60s PI 1 0m 10m SE 4 MO 4 GO 4 TO Capacitance 10 100 10 100 10 100 10 2 9 press on DISPLAY Input voltage Frequency Input current DC only Voltage bargraph Available information Insulation resistance Insulation resistance Measured voltage Measured voltage Measured current Measured current Remaining test duration Remaining test duration Resistance bargraph DAR PI capacitance After the measurement S E ADJUSTABLE VOLTAGE 2 0 1 2945MO 2300 V MET TIME 00 10 00 Test Run Time 00 10 00 DAR 305 605 264 ee _ PI 1 0m 10m 1 05 Input voltage 0 1 VAC V Capacitance 320 nF Frequency 0 0 Hz 0 250 500 750 1000 Input current 24 6 pA 100 Date 24 06 2008 Time 15 32 Available information First screen Press on DISPLAY 219 press on DISPLAY Insulation resistance Selected test voltage Input voltage Measured voltage Programmed test duration Frequency Measured current Input voltage Input current DC only Test duration Frequency
20. AR PI and DD terms and the capacitance and leakage current measurements are included in the quantity MQ 8 MAINTENANCE Except for fuse the instrument contains no parts can be replaced by personnel who have not been specially trained and accredited Any unauthorized repair or replacement of a part by an equivalent may gravely impair safety 8 1 SERVICING 8 1 1 BATTERY CHARGING If the instrument is charging in the OFF position the battery symbol is displayed and the 3 bars flash throughout the charging Charging Battery is also indicated When the battery is full the symbol and its 3 bars are lit steadily and Battery Full is indicated If the instrument is charging in a measurement position the battery symbol flashes There is no full charge indication The Battery Full indication is displayed only when the instrument is returned to the OFF position The battery should be replaced by a repairer approved by CHAUVIN ARNOUX Attention changing the battery causes a loss of stored data Carry out a complete erasure of the memory in the SET UP menu see 4 5 to be able to use the MEM MR functions again 8 1 2 REPLACING THE FUSES If Guard fuse blown appears on the display you must change the fuse accessible on the front panel after checking that none of the terminals is connected and that the switch is OFF For safety reasons this fuse must always be replaced an identi
21. ART STOP and stopped by pressing START STOP again The user determines the duration which is indicated by the measurement duration chronometer MANUAL STOP DD The measurement is started by pressing START STOP and stopped by pressing START STOP again One minute after the end of the measurement the instrument calculates and display the DD term The time remaining during this minute is displayed B TIMED RUN Timed run test This mode is used to perform a measurement for a duration defined in advance with a predetermined number of measurement samples the measurement is started by pressing START STOP and stops automatically after the time programmed by the user This duration Duration and the time interval between samples Sample can be modified using the A V and 4 keys when the Timed Run mode is selected When the measurement is started the chronometer counts down the time remaining When this time Remaining Time is zero the measurement is stopped MODE Total Run Time D METER eye Manual Stop DD Duration Sample h m m s Timed Run 02 30 00 10 Timed Run DD DAR s s PI m m 30 60 1 0 10 MODE Total Run Time Manual Stop Duration Sample h m m s Timed Run 02 30 00 10 Timed Run DD DAR s s PI m m 30 60 1 0 10 MODE Total Run Time Manual Stop Manual Stop DD Duration Sample h m m s 02 30 00 10 02 30 00 Timed Run DD DAR s s m m 30 6
22. C A 6549 MEGOHMMETER CHAUVIN ARNOUX User s manual CHAUVIN ARNOUX GROUP Thank you for purchasing a C A 6549 megohmmeter To obtain the best service from your instrument read this user manual carefully comply with the precautions for use WARNING risk of DANGER The operator must refer to this user s manual whenever this danger symbol appears Equipment protected by double insulation WARNING Risk of electric shock The voltage of the parts identified by this symbol may be gt 120 For safety reasons this symbol is displayed when such a voltage is generated Earth The CE marking indicates conformity with European directives in particular LVD and EMC The rubbish bin with a line through it indicates that in the European Union the product must undergo selective disposal in compliance with Directive WEEE 2002 96 EC This equipment must not be treated as household waste Definition of measurement categories W Measurement category IV corresponds to measurements taken at the source of low voltage installations Example power feeders counters and protection devices W Measurement category lll corresponds to measurements on building installations Example distribution panel circuit breakers machines or fixed industrial devices W Measurement category Il corresponds to measurements taken on circuits directly connected to low voltage installations Example power supply to electro
23. P button at the end of this time Similarly if the DAR or PI mode is selected as measurement mode the measurement is stopped after the time needed to calculate them Note When measuring resistances smaller than the resistance range indicated for the selected test voltage the test voltage is automatically reduced So 10 kQ can be measured as the minimum resistance regardless of the selected test voltage 3 3 CAPACITANCE MEASUREMENT The capacitance measurement is performed automatically during the insulation measurement and is displayed after the measurement stops and the circuit has been discharged 3 4 RESIDUAL CURRENT MEASUREMENT The residual current circulating in the installation is measured automatically upon connection to the installation then before and after the insulation measurement 4 SPECIAL FUNCTIONS 4 1 MODE PRINT KEY 4 1 1 PRIMARY FUNCTION BEFORE THE MEASUREMENT The primary function of the MODE key is very important it is used before the measurement to define the course of the measurement This key is inactive in the Adjust Step and SET UP positions Pressing the MODE key gives access to the list of possible measurement modes Select the mode using the A and or W keys To validate the mode selected press the MODE key again The various measurement modes are as follows B MANUAL STOP This is the conventional quantitative insulation measurement mode The measurement is started by pressing ST
24. Print result mode Print memory Baud rate Port 9600 RS 232 a Print memory Printing of stored measurements a Baud rate Port Baud rate selected in the SET UP menu see 4 5 The COM symbol in the top right corner of the display indicates data transmission to the printer 6 3 1 PRESENT MEASUREMENT RESULT PRINT RESULT When this printing mode is selected the following are printed in order general information concerning the measurement wm the measurement result a if the T function was activated the measurement result referred to the reference temperature a fora Timed Run test the list of recorded samples To stop printing turn the rotary switch Depending on the measurement performed the following forms are obtained All measurements except step function measurements CHAUVIN ARNOUX C A 6549 Instrument number 700 016 COMPANY ele Description ertet OBJECT 01 TEST 01 INSULATION RESISTANCE TEST Date 30 04 2009 Starting time 14h55 Duration 00 15 30 Temperature 23 C Relative humidity saaa 0 Test voltage 1000 V Insulation resistance 385 GOhm Rc calculated resistance118 5 GOhm at reference temperature 40 C with AT for R 2 10 C DAR 1 30 1 234 PI 10717 2 345 DD mmm Capacitance 110 nF 00 00 10 1020V 35 94 GOhm 00 00 30 1020 V 42 0 GOhm 00 00 50 1020 V 43 5 GOhm etC Date of next test T Remarks asemien aan Op
25. Voltage bargraph DAR PI capacitance Input current DC only Date time TIMED RUN DD mode Before the measurement DD DD ADJUSTABLE VOLTAGE 2 0 1 2300 V 0 0 Hz 24 6 pA AC Test Run Time 00 10 00 Input voltage 0 1 VAC V Frequency 0 0 Hz 0 250 500 750 1000 Input current 24 6 pA Ee Le Date 24 06 2008 15 32 3 Available information Selected test voltage Input voltage Programmed test duration Frequency Input voltage Input current DC only Frequency Voltage bargraph Input current DC only Date time During the measurement DD DD A 234 5 MO A 234 5 MO 2307 V 24 6 pA 2307 V 24 6 pA Remaining Time 00 09 43 Remaining Time 00 09 43 DAR 30s 60s PI 1 0m 10m MQ 4 TO 10 100 10 100 10 100 10 DD current pA DD Available information Insulation resistance Measured voltage Measured current Remaining test duration DAR PI capacitance Current for the calculation of DD DD Insulation resistance Measured voltage Measured current Remaining test duration Resistance bargraph After the measurement DD DD B 234 5 MO 2307 V 224 6 pA Elapsed Time 00 10 00 DAR 30s 60s 2 24 PI 1 0m 10m 1 56 Capacitance 220 nF DD current 11 55 pA DD 2 55 ADJUSTABLE VOLTAGE 2 2300 V Test Run
26. When it is not known the instrument can calculate it from three or more stored measurements Attention these 3 measurements must have been made by the same device identical insulation resistance but at 3 different temperatures and the temperatures must have been recorded function 2nd T at the same time as the measurements without applying the correction Resistance Correction OFF Procedure SET UP W In SET UP select Calculate AT from Memory and press gt Instr Nr 700016 SW Version 1 8 Calculate AT from Memory Maximum Output Voltage 5100V The display unit proposes all values recorded with a temperature Set Defaut Parameter Clear Memory V Disturbance V Output 396 Buzzer On Power Down On BaudRate 9600 RS 232 W Select at least 3 measurements using the A V gt 4 SET UP AT is calculated and recorded automatically once 3 stored measurements have AT Calculation fot R 2 23 7 been selected and updated as more measurements are selected Obj Test Res Vol Temp W The larger the number of measurements the more accurate the calculation ei UV 23 C 47 99 2085 50780 30 C 178 5 50780 37 C 0201 of AT 3285 5078V 23 3285 5078V 23 3285 5078V 23 0102 3285 50780 23 4 5 4 MAXIMUM OUTPUT VOLTAGE W Inthe SET UP menu select Maximum Output Voltage nox eSNG e n nstr INr ersion 1 Adjust the maximum output
27. and metrological checks must be performed by competent and accredited personnel CONTENTS 1 PRESENTATION me 4 Lets Nun eene EE A 125 Huel EE 4 2 DESCRIPTION E 5 2 E x E US 5 2 2 CI I E 6 212 M x o 6 3 MEASUREMENT FUNCTIONS 8 Sl AGT DG VONAQC C RR 8 3 2 Insulation measurement eta 8 3 9 Capacitance un Een EE 9 3 4 Residual rrentimeas tement 5 2 ee pee ice ere ba cee gedane ee ea respuat eua ci ae eee 9 4 SPECIAL FUNCTIONS 10 PRINT K Y on Len aia AMETE FR NOR Red c a LR ane 10 4 2 DISPLAY A GRAPH E 13 43 ET 19 4 4 SMOOTH EE 20 4 5 SETUP function instrument ConfiguratiOn sens sa asco rp Fo ek Eta ERES Pn Soa EARS RES ER eR ae RENE Re Rs 20 ANG coded ERR RETE RTL 24 5 PROCEDURE E EE ka ES a eege snawsessusdasundedvansuededumcvadnssvesauniasuiceaine 25 5 1 COUrSE Of measurements nnen denderen
28. bly reflect whether the insulation is in good or poor condition In addition changes in these ratios over time can be observed and used for predictive maintenance e g to monitor the ageing of the insulation of a population of rotating machines The DAR and PI ratios are calculated as follows PI R 10 min 1 min 2 values to be noted during a 10 min measurement DAR 1 min 30 sec 2 values to be noted during a 1 min measurement Remark Note that the times of 1 amp 10 min for the calculation of Pl and 30 amp 60 seconds for the calculation of DAR are those currently used and programmed as defaults in the instrument They can however be modified in SET UP to adapt to a possible change in a standard or to the needs of a specific application A capacitance in parallel to the insulation resistance extends the settling times of the measurements This can affect or even inhibit the measurement of DAR or PI depending on the time set for recording the first resistance value The following table shows typical values for the capacitance in parallel to the insulation resistance at which a successful DAR or Pl measurement is still possible at the default time for recording the first resistance value roo kay ioma 1660 10060 Interpretation of the results oan eenen lt 1 Poor or even dangerous 4 1 2 PRIMARY FUNCTION DURING THE MEASUREMENT During the measurement the first function of the
29. cable with 4mm safety connector blue 3m alligator clip blue P01295232 HV cable with alligator clip blue 8 aram vendere Eee A PAPER RETO Sce OR P01295214 HV cable with alligator clip red 8m orig unie terc Rede cata evn eve cede Eege P01295215 HV cable with alligator clip and earth pick up plug 8 m long P01295216 HV cable with alligator clip 15m JONG zer rir itr kadaden a xm ENEE P01295217 cable withi alligator clip red t5 m Ong coe eiecti er eroi a Aden ruere Ani e lee rore dese uen P01295218 HV cable with alligator clip and earth pick up plug 15 m long P01295219 Thermocouple thermometer CA D P01650101Z Therrmo hygromiter GA B40 ecrit ihe P01156301Z 10 2 REPLACEMENT PARTS HV cables blue guarded black 8 m P01295220 035 m cond withsr ar PICK WEE P01295221 2 Nsrelied tee i M P01298061A Fuse FF 380 V 5x 20 mm 10 kA set of 10 ieu eed eneen ca de Be eg dea Xara dabas P03297514 Battery 96 V 35 Ah iNIMh sassen M P01296021 232 DB OF DB 25F geen
30. cal model Exact type of fuse printed on the front panel label FF 0 1 A 380 V 5x 20 mm 10 Remark This fuse is in series with a 0 5 A 3 kV internal fuse active only if there is a major fault in the instrument If the display unit still indicates Guard fuse blown after the fuse on the front panel is changed the instrument must be sent in for servicing see 8 2 8 1 3 CLEANING Disconnect the unit completely and turn the rotary switch to OFF Use a soft cloth dampened with soapy water Rinse with a damp cloth and dry rapidly with a dry cloth or forced air Do not use alcohol solvents or hydrocarbons 8 1 4 STORAGE If the instrument is left unused for a long time more than two months fully charge the instrument before using it again 8 2 METROLOGICAL CHECK AN Like all measuring or testing devices the instrument must be checked regularly This instrument should be checked at least once a year For checking and calibration contact one of our accredited metrology laboratories information and contact details available on request at our Chauvin Arnoux subsidiary or the branch in your country 8 3 REPAIR For all repairs before or after expiry of warranty please return the device to your distributor 9 WARRANTY Except as otherwise stated our warranty is valid for twelve months starting from the date on which the equipment was sold Extract from our General Conditions of Sale provided on request Th
31. can be stored Ordinary measurements need much less memory space Up to 1184 of such measurements can be stored 6 2 2 MR SECONDARY FUNCTION The MR function is used to recall any data from memory whatever the active position of the rotary switch except for the OFF and SET UP positions When the MR key is activated the following screen is displayed Recall MEMORY Obj Test Date Time Fet ET 131359 28042009 0904 2550V The flashing cursor identifies the highest occupied Obj Test number here 13 59 1358 28042009 0900 1020 6 1357 28042009 08 50 5000V Use the A and keys to move the cursor to the desired Obj Test number 0203 14 04 2009 1507 510V 0202 14 04 2009 15 04 1020V 0201 14 04 2009 14 56 5000 Press the gt key to recall the measurement and show the results Use the DISPLAY 0102 01042000 1043 510VO key to browse through the data 0102 01 04 2009 1038 Depending on the measurement mode a graph may be available by pressing the GRAPH key Except for Adjustable Step measurements the TEMPERATURE menu is available by pressing the T key To enter the PRINT menu to print of the measurement press the PRINT key To exit from the MR function press MR again or turn the switch 6 3 PRINTING MEASURED VALUES PRINT KEY Pressing the PRINT key gives access to the menu below a Print result PRINT Present measurement result following a measurement or after access to the MR
32. d address to overwrite a previously stored result move the cursor in the list of stored results shown below the current measurement WAR N NG result and press the gt or MEM key A warning screen is displayed and prompts the user to confirm or cancel erasure of the content of the address Old data set wil be overwritten I3O K To validate use the gt key CANCEL W Pressing the MEM key again stores the current measurement results at the selected address All information about a measurement will be stored at a single location in memory date time test mode and voltage insulation resistance capacitance residual current and possibly DAR PI DD resistance referred to the reference temperature etc Note To exit from the MEM menu without storing the results press the DISPLAY key Memory space available The bargraph indicates memory usage a black already occupied memory space a white free memory space a grey amount of memory space the current measurement will need if stored not always visible because size depends on measurement The number of measurements that can be stored depends on the kind of measurements Programmed time tests need a different amount of memory space depending on test duration and sample interval for recording intermediate results A test duration of one hour and a sampling interval of 5 seconds takes the most amount of memory space a maximum of 16 of such measurements
33. d m y current date or setting of date Time h m current time or setting of time 4 5 2 MEMORY ERASURE In SET UP select Clear memory To erase the content of one or more specific OBJ TEST numbers a Select Select Data Sets to Clear by pressing gt m Then each stored measurement to be erased using A V P 4 a Validate by pressing DISPLAY The operation is confirmed or cancelled by pressing gt SET UP SET UP SET UP Clear Memory Clear Memory Select Data Sets to Clear Obj TestDate Time Fet WA R N G Clear All 4799 15 12 2008 07 04 625V 07 12 2008 18 39 3800VO 24 11 2008 1504 50 31 08 2008 15 47 2150V cA 29 06 2008 16 56 975 0201 30 04 2008 08 43 5000VO 0102 16 03 2008 0907 Li All selected data sets will be cleared 3O K CANCEL B To erase the entire memory Select Clear All by pressing gt The operation is confirmed or cancelled by pressing gt SETUR SET UP 00 Clear M Sree Sets to Clear WAR N N G Clear All All data sets will be cleared CANCEL 4 5 3 CALCULATION OF AT FROM STORED DATA The coefficient AT is used to calculate the insulation resistance at a temperature other than the measurement temperature see 4 3 It is the temperature difference at which the insulation resistance concerned is reduced to half its value This coefficient is variable it depends on the type of insulation
34. domestic devices and portable tools PRECAUTIONS FOR USE This device is compliant with safety standard IEC 61010 2 030 and the leads are compliant with IEC 61010 031 for voltages up to 1000 V with respect to earth in category III Failure to observe the safety instructions may result in electric shock fire explosion and destruction of the instrument and of the installations The operator and or the responsible authority must carefully read and clearly understand the various precautions to be taken in use Sound knowledge and a keen awareness of electrical hazards are essential when using this instrument If you use this instrument other than as specified the protection it provides may be compromised thereby endangering you Do not use the instrument on networks of which the voltage or category exceeds those mentioned Do not use the instrument if it seems to be damaged incomplete or poorly closed Before each use check the condition of the insulation on the leads housing and accessories Any item of which the insulation is deteriorated even partially must be set aside for repair or scrapping Use personal protection equipment systematically Use only the accessories delivered with the instrument Respect the value and type of the fuse to avoid damaging the instrument and cancelling the warranty Set the switch to OFF when the instrument is not in use The battery must be charged before metrological tests All troubleshooting
35. e capacitance of the insulation is measured 1 minute later the residual current circulating in the insulation is measured The DD term is then calculated as follows DD current measured after 1 minute mA test voltage V x measured capacitance F The insulation quality rating as a function of the value found is as follows Value of DD Quality of insulation Note The dielectric discharge test is especially well suited to insulation measurements on rotating machines and in general to insulation measurements on heterogeneous or multilayer insulations containing organic materials What are the DAR Dielectric Absorption Ratio and the PI Polarization Index It is useful to calculate insulation quality ratios in addition to the quantitative insulation resistance value because they can be used to eliminate the influence of certain parameters likely to invalidate the absolute insulation measurement The most important of these parameters are a temperature and relative humidity with which insulation resistance varies according to quasi exponential law the disturbance currents capacitive charging current dielectric absorption current created by the application of the test voltage Even though they gradually vanish they perturb the measurement at the start for a length of time that depends on whether the insulation is in good condition or degraded These ratios complete the absolute insulation value and relia
36. e the batteries while making insulation measurements provided that the values measured are greater than 20 MO In that case the charging time is longer than 6 hours and depends on the frequency of the measurements made 7 4 ENVIRONMENTAL CONDITIONS WB Range of use 10 to 40 C while batteries are charging 10 to 55 C during measurement 10 to 80 relative humidity Storage 40 to 70 C 10 to 90 relative humidity Altitude lt 2000 m 7 5 CONSTRUCTION SPECIFICATIONS W Overall dimensions of the instrument L x W x 270 x 250 x 180 mm W Weight approximately 4 3 kg 7 6 COMPLIANCE WITH INTERNATIONAL STANDARDS Electrical safety as per IEC 61010 1 IEC 61557 Double insulation Pollution level 2 Measurement category 111 Maximum voltage relative to earth 1000 V 7 6 1 ELECTROMAGNETIC COMPATIBILITY Emissions and immunity in an industrial setting compliant with EN 61326 1 7 6 2 MECHANICAL PROTECTIONS IP 53 as per IEC 60529 IK 04 as per IEC 50102 7 7 VARIATIONS WITHIN DOMAIN OF USE Range of Quantity Influence Influence quantity influence influenced Typical Maximum Battery voltage 9 12V lt E B gt 5 V 0 15 10 C 0 3 10 C 1 ct i i GES 0 20 1 0 C 1 1 0 2 ct V 1 2 ct Humidity 10 80 HR MO 10 40 GQ 1 5 ct MQ 40 GQ 10 TO 15 5 ct V AC voltage superimposed on 0 2096Un 0 196 96 Un 0 5 Un 5 ct test voltage 1 The D
37. e warranty does not apply in the following cases Inappropriate use of the equipment or use with incompatible equipment Modifications made to the equipment without the explicit permission of the manufacturer s technical staff Work done on the device by a person not approved by the manufacturer Adaptation to a particular application not anticipated in the definition of the equipment or not indicated in the user s manual Damage caused by shocks falls or floods 10 TO ORDER 6549 Megohmmeter 5 erred Aires ee dee eel ees eee gee ee eee el ee P01139703 Delivered with bag containing 2 x3 m safety leads fitted with a HV plug and a HV alligator clip red and blue 1x 3 m guarded safety lead fitted with a HV rear pick up plug and a HV alligator clip black 12 m mains power lead W 1 cable with rear pick up plug 0 35 m 1 DB9F DB9F cable 1 DB9M DB9M adapter W User s manuals on CD one per language 10 1 ACCESSORIES eX P01102095 Ned cde M P01102903 DC m 01101941 Set of 2 HV cables with 24 safety connector red guarded black 8m seen P01295231 Setot2 alligator clips red black e ret i eec et ee le see eon P01295457Z Set of 2 test contact tips red black nnen ettet ecrire rue bere rares isles a puse ege ENEE P01295458Z HV
38. erator retenti el ICT Step function measurement CHAUVIN ARNOUX C A 6549 Instrument number 700 016 Greece Address Description OBJECT 01 TEST 01 STEP FUNCTION TEST Date 30 04 2009 Starting time 14h55 Duration 00 15 30 Temperature 23 C Relative humidity 23 90 Step Duration True def Resistance N him voltage 1 00 10 1020 V 2 627 GOhm 2 2 411 GOhm 3 00 10 3060 V 2 347 GOhm 4 00 10 3755 V 2 182 GOhm 5 00 10 3237 V 2 023 GOhm AR 604 GOhm AV 4000 V printed only in MR mode after timed run test printed only in MR mode AR R AV ppm v 57 ppm Capacitance 100 nF 00 00 10 1020V 2 627 GOhm 00 00 30 1020V 2 627 GOhm 00 00 50 1020V 2 627 GOhm etc Date of next test Remarks eese OperatOr certet ira eee Signature re 6 3 2 PRINTING OF STORED MEASUREMENTS PRINT MEMORY When this printing mode is selected the content of the memory is displayed Stored measurements to be printed are selected using the A V gt and 4 keys Here the measurements to be printed are PRINT 13 58 Obj Test Date Time Fet 13 57 28042009 09 04 25501 02 03 28 04 2009 09 00 102VO 02 02 28 04 2009 08 50 5000 14 04 2009 15 04 1020V 14 04 2009 14 56 5000V 01 04 2009 10 43 bie 01 04 2009 1038 1359 14042009 1507 510V 0201 0102 0102 Once they have been
39. escription OBJECT 01 TEST 01 STEP FUNCTION TEST Date 30 04 2009 Starting time 14h55 Starting time 00 15 30 Temperature 23 C Relative humidity 2502 900 Step Duration True def Resistance N him voltage 1 00 10 1020 V 2 627 GOhm 2 00 10 2043V 2 411 GOhm 3 00 10 3060 V 2 347 GOhm 4 00 10 3755 V 2 182 GOhm 5 00 10 3237 V 2 023 GOhm AR 604 GOhm AV 4000 V AR R AV ppm v 57 ppm Capacitance 100 nF OBJECT 01 TEST 02 etc Date of next test ad aun Remarks nanna nan cR Signat re 6 3 3 PRINTING WITH THE SERIAL PARALLEL ADAPTER Connect the RS232 null modem cable to the C A 6549 Connect this cable to the adapter then the adapter to the printer cable Power up the printer Power up the C A 6549 Select Parallel for the Baud Rate setting in SET UP Press PRINT ATTENTION This adapter is designed be used only with the C A 6543 6547 and C A 6549 and is unsuitable for any other application 7 SPECIFICATIONS 7 1 REFERENCE CONDITIONS 7 2 CHARACTERISTICS PER FUNCTION 7 2 1 VOLTAGE Characteristics W Input impedance 750 to 3 MQ depending on voltage measured Measured voltage 1 0 900 V 901 1800 V 1801 2700 V 2701 4000 V Measurement category 1000 V CAT III or 2500 V CAT transients lt 2 5 kV 7 2 2 LEAKAGE CURRENT MEASUREMENT W Before an insulation
40. f temperature unit Default value C Range C or F Default Probe Temperature measurement temperature Default value 23 C Range 15 C 75 C Rc Reference Temperature reference temperature to which the measurement result must be referred Default value 40 C Range 15 C 75 C AT for R 2 estimated AT to obtain an insulation resistance 2 Default value 10 C Range 15 C 75 C Calculate AT from Memory used to calculate AT from 3 stored measurements made using the same probe at different temperatures see 4 5 3 Maximum Output Voltage imposes maximum locking of test voltage Default value 5100 V 40 5100 V Range Set Default Parameter default configuration reinitializes the instrument with the default values of all parameters Clear Memory can be used to partially or completely erase stored data see 4 5 2 V Disturbance V Output 0151 factor see 3 2 Important remark Default value 3 Range 3 10 or 20 Buzzer enabling disabling of buzzer keys measurements alarms Default value Range On or Off d n Power Down automatic power save mode of the instrument after 1 min if no key is activated Default value ff Range On or Off d Baud Rate RS 232 communication format and rate see 6 1 Default value 9600 RS 232 300 9600 RS 232 or Parallel Units defines in which style the Date is displayed a Date
41. ing it possible to print all measurements directly on A4 format office printers without using a personal computer 2 DESCRIPTION 2 1 HOUSING STANT ATOP C A 6549 MEGOHGAMETER 3 4mm dia safety terminals identified as and Access to the fuse that protects terminal G 8 way rotary switch OFF switches instrument power off 500V 2TO insulation measurement at 500 V up to 2 TQ 1000V ATO insulation measurement at 1000 V up to 4 TO 2500V 10TQ insulation measurement at 2500 V up to 10 TO 5000V 10TQ insulation measurement at 5000 V up to 10 TO Adjust 50V 5000V insulation measurement with adjustable test voltage from 40 V to 5100 V 10 V steps from 40 to 1000 V and 100 V steps from 1000 to 5100 V Adjust STEP insulation measurement with voltage step function the test voltage varies in steps SET UP adjustment of instrument configuration 1 yellow START STOP key beginning end of measurement 8 elastomer keys each having a main function and a secondary function 1 backlit graphic screen 1 socket for connection to line power direct operation on line power and or battery charging 1 RS 232 serial INTERFACE male connector 9 pins for connection to a PC or printer 2 2 KEYS 8 keys each having a main function and a secondary function 2nd Select the secondary function indicated in yellow italics below each key MODE Primary function select the desired ty
42. ire returning of the instrument for repair 5 PROCEDURE 5 1 COURSE OF MEASUREMENTS W Start up the instrument by setting the switch to the position corresponding to the measurement to be made The instrument can measure insulation values from 10 to 10 TQ depending on the test voltage selected from 40 to 5100 The screen displays E a Fus charge condition FIXED VOLTAGE test voltage selected a the voltage frequency and residual current on the input terminals 2500 the date and time Input voltage A 230 50 0 Hz Connect the cables of the and terminals to the measurement points Input current 24 6 nA Date 24 06 2008 Time 15 31 W Connection diagram for measurement of low insulation values example of a motor To measure high insulation values gt 1 GO we recommend using guard terminal G to avoid leakage and capacitive effects or eliminate the influence of surface leakage currents The guard terminal is connected to a surface where leakage currents may flow through dust and humidity e g the insulation surface of a cable or transformer between two measurement points W Connection diagram for measurement of high insulation values 8 Example of a motor reduction of capacitive effects b Example of a cable reduction of surface leakage effects Braid Insulator External insulator Guard Cable a Unless the step function m
43. lt value 01 10 m m 0 5 30 0 5 then 1 min steps 1 90 0 5 then 1 then 5 min steps a Set Step Function 1 2 3 for each predefined step function definition of the various voltages of the duration of each step and of the interval for the recording of samples To skip a step set the duration or the voltage to Default value Range Voltage Duration oltage Duration h m h m V Step Function 1 40 5100 V 50V in 10 V then 100 V steps 00 09 09 59 100 V 00 09 09 59 150 V 00 09 09 59 200 V 00 09 09 59 250V 00 09 09 59 sample time see note 00 05 59 59 The limit depends on the duration set for the Timed Run Step Function 2 40 5100 V 100 V in 10 V then 100 V steps 00 09 09 59 300 V 00 09 09 59 500 V 00 09 09 59 700V 00 09 09 59 900 V 00 09 09 59 sample time see note 00 05 59 59 The limit depends on the duration set for the Timed Run Step Function 3 40 5100 V 1000 V in 10 V then 100 V steps 00 09 09 59 2000 V 00 09 09 59 3000 V 00 09 09 59 4000 V 00 09 09 59 5000 V 00 09 09 59 sample time see note 00 05 59 59 The limit depends on the duration set for the Timed Run Note the minimum sample time depends on the total duration of the test Total Run Time It is equal to Sample Time Seconds h 1 5 where h hours of the Total Run Time Temperature Unit selection o
44. m will be emitted if the value measured is below the limit value defined in the SET UP menu Indicates the battery charge condition see 8 1 1 Voltage generated dangerous U gt 120 External voltage present U gt 25 VRMS 3 MEASUREMENT FUNCTIONS 3 1 AC DC VOLTAGE Turning the switch to an insulation position position other than OFF or SET UP sets the instrument to automatic AC DC voltage measurement The voltage between the input terminals is measured at all times and indicated as RMS value on the display unit Input Voltage Switching between AC and DC mode is automatic When switch is turned the frequency and the residual DC current between the terminals of the instrument are also measured The residual current is measured in order to evaluate its impact on the insulation measurement to come FIXED VOLTAGE 2500 V Input voltage A 230 Frequency 50 0 Hz Input current 24 6 nA Date 24 06 2008 Time 15 31 The insulation measurements cannot be started if there is an excessively high external voltage on the terminals in which case the A symbol is displayed next to the measured external voltage see 3 2 3 2 INSULATION MEASUREMENT W When the switch is turned to an insulation position one of the following displays appears Case 1 You select an insulation measurement with a fixed standard test voltage in manual moge FIXED VOLTAGE Positi
45. measurement Measurement range 0 000 0 251 10 00 100 0 1 000 10 00 100 0 1000 DC 0 250 9 999 99 99 nA 999 9 nA 9 999 uA 99 99 pA 999 9 HA 3000 pA W During an insulation measurement RES Eu Errore RIRs ome Even Or 9 0 250 9 999nA 99 99 999 9nA 9 999 uA 99 99 uA 999 9 uA 3000 pA 7 2 3 INSULATION RESISTANCE W Method voltage current measurement as per IEC 61557 2 or per DIN VDE 0413 Part 1 09 80 B Nominal output voltage 500 1000 2500 5000 or adjustable from 40 V to 5100 V Accuracy x 296 adjustable from 40 to 1000 in 10 V steps adjustable from 1000 to 5100 Voc in 100 V steps B Nominal current gt 1 Short circuit current lt 1 6 mApc 5 3 1 mA maximum at start up Maximum acceptable AC voltage 1 1 9150 x Un 60 V Measurement ranges 500 V 10 kQ 1 999 1000V 10 3 999 TQ 2500V 10 9 99 TQ 5000V 10 9 99 Var 40 V 5100 V to be interpolate between the fixed values above Ee and resistance range in fixed voltage mode Test Test voltage 500 V 1000 V 2500 V 5000 V Specified measurement range 10 999 4 00 39 99 MQ 399 9 REI NM 9 999 MQ Resolution Test voltage 500 V 1000 V 2500 V 5000 V Specified measurement rande 400 999 MO 4 00 40 0
46. ode is selected Adj Step select the measurement mode to be used Manual Stop Manual Stop DD Timed Run Timed Run DD DAR or Pl by pressing the MODE key see 4 1 Apress on START STOP triggers the measurement If the voltage present is greater than the maximum allowed value the measurement will be disabled see 3 2 The DISPLAY key can be used to consult all information available during the measurement This information depends on the measurement mode selected see 4 2 If the insulation values displayed are very unstable a digital filter can be activated by pressing SMOOTH to smooth them see 4 4 The alarm mode can be activated by pressing ALARM An audible beep will sound if the measurement result is below the value defined in SET UP see 4 5 Pressing START STOP again stops the measurement The last result remains displayed until the next measurement is made the MODE is changed or the switch is turned When the insulation measurements stop the circuit tested is automatically discharged via a resistor in the instrument The DISPLAY key can be used to consult all information available after the measurement This information depends on the measurement mode selected see 4 2 If the measurement was in a programmed time test mode DAR PI Timed Run or Timed Run DD pressing GRAPH displays the insulation measurement versus time curve see 4 2 Pressing T enters the TEMPERATURE menu see 4 3
47. on Resistance bargraph DAR PI capacitance After the measurement DAR g DAR g DAR FIXED VOLTAGE 0 1 V 9000 V hea suns Elapsed Time 00 01 00 Test Run Time 00 01 00 DAR 305 605 jh wor Ee V PI 1 0m 10m Input voltage 0 1 VAC Capacitance 220 nF Frequency 0 0 Hz 0 250 500 750 1000 Input current 24 6 pA 100 Date 24 06 2008 Time 15 32 Available information First screen Press on DISPLAY 2 9 press on DISPLAY Insulation resistance Selected test voltage Input voltage Measured voltage Programmed test duration Frequency Measured current Input voltage Input current DC only Elapsed test duration Frequency Voltage bargraph DAR PI capacitance Input current DC only Date time PI mode Same as DAR mode except a Plinstead of DAR at the top left of the display unit a Remaining Time 10 min m After the measurement display of DAR and PI 4 2 2 GRAPH SECONDARY FUNCTION This function is used to display the insulation resistance versus measurement time curve after a time limited measurement Timed Run or Timed Run DD This curve is plotted from the samples recorded during the measurement The A V and 4 keys can be used to move along the curve to display the exact values of each sample GRAPH 5078 V 2428 5 MQ 00 02 30 3000 2500 2000 1500 1000 500 T T T T 0 0 30 1 00 1 30 2 30 3 00 4 3 4 T KEY The T secondary f
48. ons 500V 2TO 2500 V 1000V 4TO 2500V 10TO EEE MCI 5000V 10TO Input voltage 230 Frequency 50 0 Hz Input current 24 6 nA Date 24 06 2008 Time 15 31 Case 2 You select an insulation measurement with a test voltage other than those proposed ADJUSTABLE VOLATGE 1 as standard 2300 V Position Adjust 50V 5000V You can choose from the 3 adjusted voltages predefined in SET UP using the A Input voltage 20 and V keys or define another voltage by selecting it with the gt key and adjusting Frequency 50 0 Hz it with the A and V keys Input current 24 6 nA Date 24 06 2008 Time 15 31 Case 3 You select an insulation measurement with a test voltage that varies in steps this is the step function mode STEP FUNCTION 1 Min 2300 V d Max 3900 V Position Adjust Step Test Run Time 08 38 30 Input voltage 1VAC Frequency 50 0 Hz Input current 24 6 nA Date 24 06 2008 Time 15 31 You can choose among the three step functions and W keys you defined earlier in SET UP W Pressing the START STOP key immediately triggers the measurement An audible beep is emitted every 10 seconds to indicate that a measurement is in progress Important remark These insulation measurements cannot be started if there is an excessively high external voltage on the terminals f when the START key is pressed the external voltage on the terminals of the instrument is greater than
49. pe of measurement before an insulation measurement or select the current range during a measurement PRINT Secondary function enter the PRINT menu to print measurement results DISPLAY Primary function browse through the various screens accessible before during and after the measurement GRAPH Secondary function display insulation resistance versus duration after a time limited measurement Primary function select a parameter one step to the right of the current cursor position from the end of the line the cursor jumps to the beginning of the line Secondary function activate deactivate display backlight Primary function deselect a selection or move the cursor one parameter to the left Secondary function enter the TEMPERATURE menu to refer the measurement to a specified temperature Primary function move the cursor up or increment the selected parameter flashing or indicated by the cursor If the key is kept pressed the rate of change of the parameters is increased Secondary function activate deactivate the alarms programmed in the SET UP menu or move the cursor one page up in a long menu Primary function move the cursor down or decrement the selected parameter flashing or indicated by the cursor If the key is kept pressed the rate of change of the parameters is increased SMOOTH Secondary function enable disable smoothing of the insulation resistance indication or move the cursor one page down in a long menu
50. perature 40 Power Down On Date d m y 27 04 2009 DAR s s 30 60 for R 2 10 C mBaudRate 9600 RS 232 caTime h m 10 21 Description of each instrument configuration parameter a Display Contrast modification of display unit contrast 0 255 Attention the display unit is no longer legible above 130 Alarm Settings programming of measurement threshold values below which an audible alarm is triggered Default value 500 V lt 500 kQ 1000 V lt 1 0 2500 lt 2 5 5000 lt 5MQ Adj Voltage 1 lt 50kQ Adj Voltage 2 lt 100 kQ Adj Voltage 3 lt 250 Note to return to the SET UP menu press the DISPLAY key a Adjustable Voltage 1 2 3 adjustable voltage different values can be predefined Default value Adjustable Voltage 1 50V 40 5100 V Adjustable Voltage 2 100V in steps of 10 V from 40 to 1000 V Adjustable Voltage 3 250V in steps of 100 V from 1000 to 5100 V Timed h m duration of test in Timed run mode Default value 00 10 h m 00 01 49 59 h m Sample Time m s time interval between samples recorded in Timed Run mode for plotting R t 00 10 m s 00 05 59 59 m s The limit depends on the duration set for the Timed Run DAR s s 157 and 2 times for the DAR calculation Default value 30 60 s s 10 90 15 180 s s 5 second steps PI m m 197 et 2 times for the PI calculation Defau
51. sene 41 1 PRESENTATION 1 1 THE MEGOHMMETER The C A 6549 megohmmeter is a portable unit fitted into a rugged construction site casing with cover operating on battery or line power Its main functions are W automatic detection and measurement of voltage frequency input current quantitative and qualitative insulation measurement measurement at 500 1000 2500 5000 or other test voltage between 40 and 5100 adjustable voltage measurement in voltage step mode the applied voltage increases in steps automatic calculation of DAR PI and DD dielectric discharge index quality ratios a automatic calculation of measurement result referred to a reference temperature W automatic capacitance measurement W automatic measurement of residual current This megohmmeter helps to ensure the safety of electrical installations and equipment Its operation is controlled by microprocessor for the acquisition processing measurement display storage and printing of results It offers a wide range of advantages such as digital filtering of insulation measurements automatic voltage measurement threshold programming to trigger alarms using audible beeps the timer for measurement duration checks protection of the device by fuse with detection of defective fuses operator safety by means of automatic discharge of the test voltage on the equipment tested automatic power save mode of the device to save battery po
52. the value U peak defined below the insulation measurement is not triggered and an audible alarm is emitted the instrument then returns to automatic voltage measurement U peak gt 2 x dISt x Un where Upeak external voltage peak or DC on the terminals of the instrument dist coefficient that can be adjusted in SET UP 396 default value 1096 or 2096 Un test voltage selected for the insulation measurement W Similarly if during the insulation measurements an external voltage greater than the value U peak defined below is detected the measurement is stopped and the symbol appears next to the value of the external voltage measured U peak gt dISt 1 1 x Un where Upeak external voltage peak or DC on the terminals of the instrument dlSt coefficient that can be adjusted in SET UP 3 default value 10 or 20 Un test voltage selected for the insulation measurement Note Adjust the 9151 factor to optimize the measurement build up time If there is no disturbance voltage 9151 can be set to its minimum value to obtain the shortest possible measurement build up time If there is a large disturbance voltage dISt can be increased so that the measurement can be started and will not be interrupted B Pressing the START STOP key again stops the measurement If a programmed time test mode Timed Run or Timed Run DD was selected as measurement mode the measurement is stopped without action on the START STO
53. unction can be used in two ways One is to assign a Probe Temperature to an insulation resistance measurement the other to refer the resistance to a temperature different from the measurement temperature This makes it possible to observe the insulation resistance over time and judge its evolution under comparable temperature conditions This is because insulation resistance varies with temperature according to a quasi exponential law As part of a maintenance program covering a population of motors for example it is important to perform periodic measurements under similar temperature conditions Otherwise the results obtained must be corrected to refer them to a fixed reference temperature This function can do this Attention The T function is not available in the Adjustable Step position If the result of the insulation resistance measurement is out of range lt or gt no temperature corrected resistance can be calculated Procedure W You have just made a measurement and have not yet stored it Make sure that the result is not out of range then enter the T mode by pressing 2nd then T TEMPERATURE W Enter the Probe Temperature at which you made the measurement by default the Probe Temperature 23 C instrument proposes the value set in SET UP Resistance Correction On 1 f you want to know the resistance of the probe at another temperature set Resistance Rc Reference Temperature 40 E EE
54. vates an insulation measurement digital filter It affects only the display which is smoothed not the measurements This function is useful if the insulation values displayed are very unstable The filter is calculated as follows RSMOOTH RSMOOTH RSMOOTH N Since N is set to 20 the time constant of this filter is approximately 20 seconds 4 5 SET UP FUNCTION INSTRUMENT CONFIGURATION This function located on the rotary switch can be used to change the configuration of the instrument by accessing directly the parameters to be modified Turning the rotary switch to SET UP gives you access to the menu of all modifiable parameters Select the parameter to be modified and its value using the A V gt and 4 keys 4 5 1 SET UP MENU SET UP SET UP SET UP SET UP Instr Nr 700016 SW Version 1 8 Instr Nr 700016 SW Version 1 8 Instr Nr 700016 SW Version 1 8 Instr Nr 700016 SW Version 1 8 Display Contrast 80 PI m m 1 0 10 Calculate AT from Memory Clear Memory Alarm Settings Set Step Function 1 Maximum Output Voltage 5100V V Disturbance V Output 396 Adjust Voltage 1 50V Set Step Function 2 Set Defaut Parameter Buzzer On Adjust Voltage 2 100V Set Step Function 3 Clear Memory Power Down On Adjust Voltage 3 250 V Temperature Unit Celsius V Disturbance V Output 396 BaudRate 9600 RS 232 Timed Run h m 0 10 Defaut Probe Temperature 23 Buzzer On Units Europe Sample Time m s 0 10 Rc Reference Tem
55. wer indication of battery charge condition large graphic display with backlight capability memory 128 kB real time clock and serial interface PC control of the device using PC software optional printing in RS 232 or Centronics mode 1 2 THE ACCESSORIES 1 2 1 MEASURING CABLES The megohmmeter is delivered with 4 measuring cables as standard W 23m safety cables red amp black with rear pick up with an HV plug for connection to the instrument and an HV alligator clip for connection to the item tested W 2 blue cables 3 m and 0 3 m with rear pick up to measure high insulation values see 5 1 Optionally you can order the same cables in lengths of 8 m and 15 m and also simplified cables the alligator clip is replaced by a 4 mm banana jack to which standard alligator clips or contact pins can be connected 1 2 2 PC SOFTWARE OPTIONAL This PC software is used to W download data stored in the instrument print customised test protocols in accordance with user needs create Excel spreadsheets W configure and control the unit via the RS 232 The minimum recommended configuration is a PC with a 486DX100 processor 1 2 3 SERIAL PRINTER OPTIONAL This compact printer can be used to print measurement results directly in the field 1 2 4 SERIAL PARALLEL ADAPTER OPTIONAL The optional RS232 Centronics adapter converts the serial interface RS232 into a parallel printer interface Centronics mak
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