C.A 6541 C.A 6543 - produktinfo.conrad.com
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1. This test is carried out internally on a load corresponding to that during functioning Signal that lead compensation is in effect gt 0 lt ei Warning buzzer is activated O Indicates that the automatic switch off function has been deactivated SMOOTH Smoothes the insulation measurements displayed REMOTE Remote control via an interface C A 6543 In this mode all the buttons and the rotary switch on the instrument are non functional except for in the case of switching off the instrument FUSE HI Flashes if the input fuse is defective FUSE G Flashes if the G input fuse is defective 3 MEASUREMENT FUNCTIONS 3 1 AC DC Voltage Select any insulation resistance or continuity measurement position with the rotary selector switch and the device is automatically in AC DC voltage measurement mode The voltage is permanently measured and is shown on the small display Proceeding with a measurement is prohibited if an external voltage is present at the terminals before pressing START STOP Similarly if an interference voltage is detected during measurement the measurement is stopped and the voltage indicated 3 2 Insulation measurement As soon as one of the MQ positions has been selected the main display shows MQ and the small display indicates the voltage present at the device s and terminals If the external voltage present at the device s terminals exceeds the thresholds shown on2. 2 4 AH NiMh Rechargeable battery P01 2960 21 B RS 232 PC cable DB 9F DB 25F X2 eerte tendente p eden P01 2951 72 B RS 232 printer cable DB9F DB 9M N 01 LL rette P01 2951 73 B Maius lead no earth uc oet oan ten ce er eene di P01 2951 74
3. If a new is OBJ is selected TEST is automatically set to the maximum memorised number At this stage it is possible to consult the entire memory with the gt and buttons since the measurement values corresponding to the selected OBJ TEST number are displayed on the main display It is possible to scroll down through them with the R DAR PI button M The V TIME button is active and gives access to the date time V OBJ TEST number for each result If the recording selected by the OBJ TEST number corresponds to a time controlled test the R t values can be accessed by pressing the R t button The small display changes and indicates min sec time of 1 sample and the symbol flashes on the screen You can scroll through the other samples with the A button v To exit from R t mode and return to the normal memory recall mode OBJ TEST press R t or R DAR PI again N To exit the MR function press the MR button once again or turn the selector switch 6 3 Printing out measured values PRINT PRINT MEM button C A 6543 If you use a serial printer choose the appropriate communication speed in the SET UP menu between 300 9600 bauds then program the printer to the format run by the instrument see 6 1 If you are using a parallel printer you should set the signalling speed to Parallel when in SET UP and use the serial to parallel adapter that comes as an optional item to plug in series the supplied cable
4. 50 100 250 50 100 250 50 100 250 50 100 250 250 V 500 1000 V 500 1000 V 500 1000 V 500 1000 V 500 1000V 500 1000V 1500 1000 V Accuracy 5 L 3 ct 15 L 10 ct DC voltage measurement after insulation test W DC Voltage range 25 1000 V B Resolution 0 5 Vpc W Accuracy 1 R 3 cts B Voltage Vs load curve Capacitance measurement following the discharging of test object E Range 0 005 4 999 uF B Resolution 1 nF B Accuracy 10 1 ct Graphs showing the typical changes in test voltage as a function of the load 50 V test voltage Ouput voltage V 100 90 80 70 60 50 40 30 Resistance k 20 10 0 Ouput voltage V Ouput voltage V Ouput voltage V 100 V test voltage 120 100 80 60 40 20 100 90 80 70 60 50 40 30 20 10 0 Resistance k 250 V test voltage 300 250 200 150 100 50 250 200 150 100 50 0 Resistance k 500 V test voltage 600 500 400 300 200 100 500 400 300 200 100 0 Resistance k 1000 V test voltage 1200 1000 800 600 Ouput voltage V 400
5. To stop printing alter the position of the selector switch Only the main results are printed out Example CHAUVIN ARNOUX C A 6543 Instrument number 000 001 CONTINUITY TEST OBJECT 01 TEST 01 BE E 31 03 1998 Start time i Continully 5 c ees 0 45 Q CONTINUITY TEST OBJECT 01 TEST 02 Date RE ES 31 03 1998 Start reme 14 55 Continuily 3 crore VEE 0 91 Q INSUALTION RESISTANCE TEST OBJECT 01 TEST 03 Data Ee 31 03 1998 Start timez ia 14 55 Test duration erc 15 min 30 sec Temperature ees rro F Relative humidity roo 96 Test voltage nn arn ns 1000 V Insulation resistance IR 385 GO DAR RI 17 30 PI RI 10 RI1 e 2 345 COMMONS Este to tld A space for the operator to fill in their signature comes at the end of the printout 6 4 Printing with the serial to parallel adapter 1 Connect the null modem RS232 cable to the C A 6543 2 Connect the cable to the adapter then the adapter to the printer cable 3 Switch on the printer 4 Switch on the C A 6543 5 To start printing out values that haven t been saved immediate printing press PRINT after a measurement 6 To start printing out saved measurements press the PRINT MEM button A WARNING This adapter is designed exclusively for use with the C A 6543 and is not suitable for any other application 7 SPECIFICATIONS 7 1 Reference conditions Influence qua
6. v Second function to decrease the flashing parameter being displayed To move about the list of interval insulation measurements in the R t function If the A and Y buttons are held down the movement between parameters is fast W C A 6543 Only MEM First function to save measured values MR Second function to recall saved data this function is independent of the rotating switch position PRINT First function for the immediate printing of measurement results PRINT Second function for printing of memory contents MEM amp Back lit liquid crystal display 2 1 2 C A 6543 only 6 Mains plug direct operation on AC network battery recharge D RS 232 serial INTERFACE male plug 9 pin for connection to a PC or printer Note The battery compartment C A 6541 or the rechargeable battery compartment C A 6543 is situated inside the unit casing 2 2 Display 10M Econ 18 106 1006 gn A EE H Bap x A Pi H ir cara OE IIA nao ey 2 SMOOTH REMOTE 2 2 1 Digital display The main display indicates values when carrying out insulation measurement resistance DAR and Pl capacitance and continuity and resistance measurement The small digital display indicates the voltage measured or applied by the instrument During insulation measurement the elapsed time or the output voltage is displayed After recording a set of data C A 6543 the small display also indicates the time and date in M
7. 200 1000 800 600 400 200 50 Resistance k E Typical settling time of the measurement as a function of the elements tested These values include the influences on the auto range and supply voltage regulation system due to the charge of the capacitive component Non capacitive load Load with 1 uF capacitor 1 MQ insulation 7s 7s 500 GQ insulation 17s 20s B Discharge time of the tested element across a 750 KQ internal resistance up to 25 V Initial voltage Discharge time 1000 V 2 8 s 500 V 2 28 250 V 1 78 100 V 1s 50V 0 5s B Range of DAR and PI ratios 0 000 to 9 999 Accuracy 5 7 2 8 Continuity Method Voltage current method according to EN 61557 4 ed 02 97 Open circuit voltage Max 12 4 Voc lt 15 V with external supply Short circuit current gt 200 mApc Max voltage surge 1200 V AC and DC for 10 seconds between the and terminals 660 V AC and DC between the G and or G and terminals Test lead compensation Ra is measured for the test leads in short circuit when in the SET UP menu see 8 4 7 this value is memorised and subtracted from all continuity measurements The compensation is limited to 5 Q R displayed R measured Ra Continuity measurement range 0 01 to 39 99 O Resolution 0 01 Q M Operating current gt 200 mA from 0 01 to 20 00 Q and gt 140 mA from 20 01 to 39
8. opening up the device casing Exact types of fuses on sticker in battery compartment terminal fuse F1 FUS HI F 2 5 A time delayed fuse 1 2 kV 8 x 50 mm 15 kA G terminal fuse F2 FUS G F 0 1 A fast fuse 660 V 6 3 x 32 mm 20 kA 8 1 4 Cleaning The instrument must be disconnected from any source of electricity Use a soft cloth lightly dampened with soapy water Rinse with a wet cloth and then dry with a dry cloth or a flow of air Do not use alcohol solvents or hydrocarbons 8 1 5 Storage If the instrument is not used for an extended time period longer than two months remove the battery and store separately C A 6541 8 1 6 Calibration It is essential that all measuring instruments are regularly calibrated We advise you to check this instrument at least once a year For checking and calibration of your instrument please contact our accredited laboratories list on request or the Chauvin Arnoux subsidiary or Agent in your country 8 1 7 Maintenance Repairs under or out of warranty please return the product to your distributor 9 WARRANTY Our guarantee is applicable for twelve months after the date on which the equipment is made available extract from our General Conditions of Sale available on request 10 TO ORDER CABAI air P01 1389 01 Delivered with shoulder bag containing 2 x 1 5 m safety leads straight straight red blue 1 x 1 5 m guarded safety lead black 3 x
9. option for the C A 6543 This compact printer enables you to print out test results directly on site whether you ve saved them or not B Serial to parallel adapter The RS232 Centronics adapter available as an option makes it possible to convert the serial interface RS232 into a parallel printer interface Centronics which enables direct printing of all measurements on A4 format office printers without having to resort to using a personal computer 2 DESCRIPTION 2 1 Unit overview Refer to the pictures of the device in Appendix 8 11 found at the end of this user s manual 2 1 1 C A 6541 and C A 6543 D 3x4mm 2 safety terminals labelled G and Next to the terminal there are 2 additional terminal contacts for the connection of the remote control probe 3 contact connector Rotary selector switch with 9 positions m Off instrument is off m MQ 50V insulation measurement up to 200 GO m MO 100V insulation measurement up to 400 GO m MQ 250V insulation measurement up to 1 TO m MQ 500 V insulation measurement up to 2 TO m MQ 1000 V insulation measurement up to 4 TQ m 400 KQ resistance measurement m 40 Q en continuity measurement m SET UP set up of the device configuration O 1 yellow START STOP button start stop of the measurement 6 buttons C A 6541 or 8 buttons C A 6543 in elastomer each with a first and a second function Selection of the second function
10. 99 Q B Accuracy 13 R 4 cts W Max inductive load 5 hrs without damage to the instrument W Max serial mode voltage 3 Vac pc measurement is prohibited above this value 7 2 4 Resistance B Method Voltage current measurement B Open circuit voltage max 12 4 Voc lt 15 V with external supply B Short circuit current lt 6 mA DC W Max voltage surge 1200 V AC and DC for 10 seconds between the and terminals 660 V AC and DC between the G and or G and terminals W Max serial mode voltage 3 Vac or 3 Voc measurement is prohibited above this value Range 0 01 39 99 O 40 0 399 9Q 0 400 3 999 ko 4 00 39 99 kQ 40 0 399 9 KO Resolution 0 01 9 0 19 129 1090 100 Q Accuracy 13 R 3 cts 7 3 Power supply W The device supply is via 8x 1 5 V batteries LR 14 C A 6541 Rechargeables battery NiMh C A 6543 Recharge 85 to 256 V 50 60 Hz electrical safety 256 V Cat III Instrument C A 6541 C A 6543 Measurement Average operating radius Average operating radius Insulation measurement 21 000 x 5 s measurements 5 000 x 5 s measurements with 20 s pause for normal load 1 with 29 s pause for normal load 2 Continuity measurement 16 000 measurements lasting 5 s 4 000 measurements lasting 5 s with pause of 20 s at nominal load 1 with pause of 20 s at nominal load 2 Normal load 1000 V 1 mA 1 If we a
11. can be changed in the SET UP menu The samples are displayed with the R t function see 4 3 as long as a new measurement has not been commenced With each new measurement the previous sample value is erased from the memory These sample values are saved with the last value of the resistance if used with the MEM memory storage function If the selector switch s position is altered or if the STOP button is pressed during measurement then measurement is interrupted This function is only active for insulation measurement 4 3 R DAR PI R t Button B First function R DAR PI The R DAR PI button allows automatic measurement of the Polarisation Index PI and the Dielectric Absorption Ration DAR These two parameters are particularly useful when monitoring the ageing of insulation on electrical machines or on long cables for example On these kinds of parts measurement is disturbed at the beginning due to interference currents from capacitive charges dielectric absorption which eventually cancel each other out Therefore in order to get an accurate measurement of the leakage current that is representative of the insulation itis necessary to carry out the measurement over a long period of time so as to reduce the influence of any interference currents when measurement is commenced Next we calculate the ratios such as the PI or the DAR PI R 10 min R 1 min 2 values to take down during a 10 min measurement DAR R 1 min R 3
12. in yellow italics below each button 2nd First function before insulation measurement use to choose the type of measurement desired from amongst normal measurement the dielectric absorption ratio DAR R DAR PI and the polarisation index Pl After measurement it displays R DAR Pl and capacitance uF R t Second function Show hide the interval values of insulation resistance test voltage and time stamping following a time controlled test buttons V TIME and can also be used V TIME First function When measuring insulation it displays the time elapsed since the beginning of the measurement then the exact voltage generated When carrying out Resistance or Capacitance measurement this button has no effect In MR memory a recall it displays the date and the time at which the measurement was memorised the exact test voltage and the OBJ TEST number Second function activation deactivation of time controlled test mode First function to turn display back lighting on and off ALARM Second function to activate deactivate the alarms programmed in SET UP gt First function to select a parameter to be modified SMOOTH Second function to stop start smoothing of displayed values during insulation testing First function to increase the flashing parameter being displayed To move about the list of interval insulation measurements in the R t function
13. the W button is activated In this case it only disappears when the yz button is pressed again or if other function buttons are pressed This allows you to rapidly decrease parameters with the W button without having to press the ar button every time 42 V TIME C Button B First function V TIME With this button all the secondary information available can be displayed on the small display For insulation measurement The time elapsed since the start of the measurement The voltage between the instrument s and terminals Date time test voltage and OBJ TEST number in memory recall mode MR For resistance or continuity measurement Voltage between the instrument s and terminals Date time test voltage and OBJ TEST number in memory recall mode MR B Second function time controlled test The small display indicates the measurement duration programmed in SET UP the symbol lights up Pressing the START button commences measurement The measurement duration is set to 15 minutes by default programmed in during manufacturing As soon as the measurement is commenced the small display counts down the remaining duration of the measurement Once this duration reaches zero measurement stops As the time controlled test is carried out interval samples resistance voltage values as a function of time are automatically saved The time between each sample is set to 30 s by default but this value
14. 0s 2 values to take down during a 1 min measurement The quality of insulation depends on the results found DAR Pl State of the insulation lt 1 25 lt 1 Inadequate even a2 dangerous lt 1 6 lt 4 Good gt 1 6 gt 4 Excellent m Using the R DAR PI function During or after measurement the R DAR PI button allows you to scroll through the following values DAR for measurements lasting gt 1 min PI for measurements lasting gt 10 min Capacitance in uF only after the measurement has stopped and the circuit has been discharged Insulation resistance in MQ GQ or TQ Automatic measurement of DAR or PI If the R DAR PI button is pressed when in voltage measurement mode before proceeding with a measurement then the following is displayed MQ gt DAR gt PI 1 Depending on the choices DAR or PI the measurement goes as follows a DAR press START the DAR symbol flashes and the display indicates as long as the calculation of the coefficient is not possible t lt 1 mn N L X e g PAR um After 1 min measurement stops and the main display automatically shows the DAR value During or after measurement the R DAR PI button can be used to see the insulation measurement carried out but it does not give the Pl value since the measurement has not lasted long enough b Pl press START the PI symb
15. 1 or the battery charge status indicator C A 6543 a large back lit LCD with comprehensive range of symbols easily read by the user The C A 6543 has the following additional features m Integral rechargeable battery recharged from the mains Operation directly powered from the mains 128 kB memory real time clock and serial interface Piloting of the instrument from a PC with the optional MEGOHM VIEW software Printing in RS 232 or Centronics mode 1 2 Accessories B Remote control probe optional see 11 3 This probe plugs in via a specific connector It can be used to carry out all measurements the yellow button operates in just the same way as the device s START STOP button A push button on the back of the probe enables you to light up the measurement point approx 500 lux illumination a useful feature since insulation measurements are made on dead installations hence in darkness B Megohm View PC software option for the C A 6543 The PC software makes it possible to retrieve data from memory to plot graphs of the changes in insulation as a function of the time over which the test voltage is applied R t to print out protocols of personalised tests depending on the user s needs to create text files for use on spreadsheets Excel to set up and control the instrument entirely via the RS 232 The minimum configuration recommended for the PC is a 486DX100 processor Wi Serial printer
16. 2 June 95 8 MAINTENANCE For maintenance use only specified spare parts The manufacturer will not be held responsible for any accident occuring following a repair done other than by its After Sales Service or approved repairers 8 1 Upkeep 8 1 1 Replacing the batteries C A 6541 The battery voltage comes up on the small digital display for 2 seconds when switching on the instrument The main display indicates bAt This test is made internally on a load corresponding to that during functioning Before making the measurement make sure that the symbol is not flashing on the screen after the switching on stage the battery voltage appears for 2 seconds on the small display If this is not the case it is essential that you should change all the batteries taking all the necessary precautions whilst opening the instrument Check that none of the terminals is connected and that the selector switch is definitely on OFF before accessing the battery compartment found inside the instrument Exact type of batteries specified LR14 alkaline To open up the instrument unscrew the 4 captive screws situated on the underside of the case As soon as they turn freely place the instrument on a table and press on the screws to extract the front panel Turn over the instrument to entirely remove the front panel unit from the casing The batteries are then accessible at the back of the panel unit after having unscrewed the battery compartment s
17. 4 measurement when sampling at the rate chosen in SET UP the default value is 30 seconds It is possible to save more than 20 samples available processing memory space permitting On the C A 6543 the number of samples that can be saved is only limited by the read write memory space available After pressing the R t button the instrument is in display mode the small display indicates the time 00 30 if the sampling frequency is 30 s the main display shows the corresponding R value Using the V TIME button it is possible to alternate between the time and voltage on the small display associated with the R value on the main display A The Y button is used to scroll down through the all the samples saved during measurement This makes it possible to read off the information in order to draw out R t and an V t graphs This makes it possible to carry out R t analysis on site without a printer or a PC Pressing the R t or the R DAR PI again exits from this function 44 X ALARM Button E First function This function allows the display back light to be turned on or off M Second function ALARM Activates deactivates the ALARM function The corresponding symbol is displayed when activated If this function is activated and the high or low threshold value programmed in the SET UP menu is crossed the ALARM symbol flashes and the buzzer if activated sounds continually It is possible to program a different limit in each fun
18. EST number as the final measurement B Estimation of the memory capacity Total memory space 128 kb Data management 8 kb Free memory space 120 kb An insulation measurement result takes up approximately 80 bytes Fora time controlled test a sample takes up 10 more bytes A resistance or continuity measurement takes up 26 bytes It is therefore possible to record about 1500 insulation measurements or about 4000 resistance or continuity tests B Free memory space This function is automatically activated when a result is saved Press MEM once in order to get the following free OBJ TEST number the bar graph indication is in proportion to the available free memory space If the entire memory is free all of the bar graph segments show up If the entire memory is full the left arrow to the left of the bar graph flashes As soon as the saving is over with the bar graph disappears Each segment of the bar graph equates to approximately 50 recordings 6 2 2 Second function MR With the MH function it is possible to recall any saved data from the memory no matter the position of the rotary selector switch W When the button is pressed the MR symbol is displayed without flashing The small display indicates the last OBJ TEST number to be assigned e g 02 11 02 11 flashes opposite the TEST symbol the usual modification procedure using the p and A buttons should be used to select the desired OBJ TEST number v
19. M gohmm ras C A 6541 Megohmmeters Megohmmeter Megeohmmet C A 6543 Megaohmetros Notice de fonctionnement User s manual Bedienungsanleitung Libretto d Istruzioni Manual de Instrucciones English Meaning of the A symbol Warning Please refer to the User s Manual before using the instrument In this User s Manual the instructions preceded by the above symbol should they not be carried out as shown can result in a physical accident or dammage the instrument and the installations Meaning of the El symbol This device is protected by a double insulation or by a reinforced insulation No linking is required from the protection earth terminal to ensure the electrical security Meaning of the A symbol WARNING Risk of electric shock The voltage of parts indicated with this symbol can be 120 V DC For safety reasons this symbol lights up on the LCD screen as soon as a voltage is generated Thank you for purchasing a C A 6541 or C A 6543 megohmmeter To get the best service from this instrument W read this user s manual carefully W respect the safety precautions detailed A SAFETY PRECAUTIONS W Observe the conditions for use temperature humidity altitude pollution level and place of use M This instrument can be used on category Ill installations with voltages not exceeding 600 V in relation to the earth Category Ill meets with the severe reliability and environmental requisites corresponding to perma
20. R memory recall mode It also indicates the memory address with the OBJ TEST number see 2 2 3 Symbols 2 2 2 Bar graph The bar graph is active for insulation measurement 0 1 MO to 1 TQ It also serves to indicate the battery charge as well as the free memory space one segment representing approximately 100 groups of saved values 2 2 3 Symbols MEM MR Memory address C A 6543 the number is displayed above on the small digital display OBJ TEST Memory address C A 6543 the number is displayed above on the small digital display COM Flashes on the screen when data is transmitted to the serial interface C A 6543 or remains permanently displayed if there is a problem during transfer DAR PI Indicates the mode chosen before insulation measurement or the results of these measurements A Dangerous voltage generated V gt 120 V A External voltage present symbol is activated after pressing START if V gt 25 Vac 3 V or gt 35 Vpc a Activation of time controlled test mode or clock adjustment when in SET UP C A 6543 eh Indicates that the second function of a button is to be used h Flashes if the battery voltage C A 6541 or the rechargeable battery C A 6543 is low The batteries should be replaced or the rechargeable battery should be recharged See 8 Maintenance The voltage is displayed on the small digital display for 2 seconds whilst the instrument switches on The main display indicates bat
21. adapter Centronics printer cable There are two different printing modes possible Instantaneous printing of measurement PRINT Printing of recorded data PRINT memory If the data transmission to the printer is successful the COM symbol flashes on the screen If a problem is experienced the COM symbol remains permanently on the LCD screen without flashing 6 3 1 Instantaneous printing of measurements PRINT button Following a measurement or after accessing values in MR mode use the PRINT function to print off the measurement results Pressing the button brings about the printing of 1 set of measurements U R DAR Pl date time for normal tests the R t values if the time controlled test has been used To stop printing alter the position of the selector switch According to the function used the following models are obtained B Insulation measurement CHAUVIN ARNOUX C A 6543 Instrument number 000 001 INSULATION RESISTANGE TEST OBJECT 01 TEST 01 only printed in MR mode Description ccs EE N Date 91 03 1998 start MGE icai eere 14 55 Test duration Temperature eee isos F Relative humidity eese 96 Test voltage emnes 1000 V Insulation resistance R 385 GOhm DAR R 1 R 30 PIR TOR A EE meret 2 345 Comments ct id Date of next test AE ERR After a time c
22. are preferable to test probes held in the hand see 8 11 As soon as insulation measurement is stopped the test circuit is automatically discharged over the instrument s internal resistance 5 3 Continuity measurement see 3 3 In this function the measurement current is gt 200 mA from 0 to 20 Q and gt 140 mA from 20 to 40 This measurement serves to test the low resistance of PE ground cables for example The measurement ranges increase automatically up to 40 with a maximum resolution of 0 01 M Select 40 Q position with rotary switch W Connect the instrument to the test object M If the voltage present is gt 3 V then measurement is prohibited H Start the measurement and read off the results NOTE It is possible to compensate for the lead resistance see 8 4 10 3 The R DAR PI and V TIME buttons are not active for this function There is no automatic polarity change in continuity measurement 5 4 Resistance measurement see 3 3 In this function the measurement current is limited to 6 mA The measurement ranges increase automatically in increments up to 400 kQ with maximum resolution of 0 01 Q M Select 400 kQ position with the rotary switch W Connect the instrument to the test object H If the voltage present is gt 3 V then measurement is prohibited M Start the measurement and read off the results During measurement the potential difference at the input is indicated on the small display useful for measureme
23. croc clips red blue and black 1 x black test probe 8 x LR14 batteries 5 x condensed user s manuals 1 per language and this user s manual in 5 languages X TL P01 1389 02 Delivered in shoulder bag containing 2x 1 5 m safety leads straight straight red blue 1 x1 5 m guarded safety lead black 3 x croc clips red blue and black 1 x black test probe 1x2 m mains lead 5 x condensed user s manuals 1 per language and this user s manual in 5 languages Accessories B Remote control probe orina ir P01 1019 35 E Setot 2testorobes red Dacia aa P01 1018 55 E Set of 3 x 3 m safety leads red blue black guarded nnen P01 2951 70 I PG software G A 6543 see ER ER EER SEE REENEN GEKEER veces AAEE OAE YET Re Re ep Ee REK Roe see been a d P01 1019 38 m Serial printer GA 6548 inicia P01 1029 03 E Serial to parallel adapter C A 6543 oo ee se se Ee ee Ge Re ee ee Re ee rana nennen PO1 1019 41 Spares W 3x 1 5 m safety leads straight straight red blue black guarded PO1 2951 71 W 5 x croc clips red black blue white green yellow nennen eenen PO1 1018 49 W Shoulder bag N 6 for accessories see P01 2980 51 E F2 5A 1200V time delay fuse 15 KA 8x 50 mm set of 5 P01 2970 71 W F 0 1 A 660 V fastfuse 20 kA 6 3 x 32 mm set of 10 ne P01 2970 72 W 9 6 V
24. ction and these limits will be stored in memory after the device is switched off 45 P SMOOTH Button m First function P Used to select the desired parameter to be modified the selected parameter flashes It is modified using the gt button see 4 6 W Second function SMOOTH Used to activate a digital filter for insulation measurement It only has an effect on the displayed values which are smoothed and not the actual measurements This function is useful for instances when the displayed insulation values are highly unstable brought about due to a capacitive component in the tested element for example 46 Button This function is used to change the flashing parameters being displayed or to consult R t values see 8 4 3 As a general rule two figures day month hour min sec OBJ TEST flash The A and V functions have a follow on mode i e as soon as the high or low modification limit is reached the parameter to be modified switches automatically to the following low or high limit E First function A By pressing the button briefly the displayed number can be increased unit by unit When pressed for a longer time the number is increased at a faster rate B Second function Y By pressing the button briefly the displayed number can be decreased unit by unit When pressed for a longer time the number is decreased at a faster rate Unlike all the other second functions of other buttons it is not
25. d 41 4 4 E ALARM BUON AE ace t rette ee ee Pt eeen 43 45 P SMOOTH Button anneer tenere 44 A 4 6 v Button sys 47 SETUP TUnCtiom AA EE RE EE e dte RE 44 USE 47 Del Measurement proc ARE di a ir s 47 5 2 Insulation measurement ME RSA ERAS RENEE GRAS GR EE EE GR AE GEN GN ER AANGESE RAGE EDE EE RA FAEERE FRA XA ERE RR AE KEER 47 5 3 Continuity measurement 48 5 4 Resistance measurement 5 5 Capacitance measurement MEMORY RS 232 C A 6543 6 1 RS 232 Specifications 6 2 Saving recalling values MEM MR button eee 49 6 3 Printing out measured values PRINT PRINT MEM button C A 6543 su 52 6 4 Printing with the serial to parallel adapter eene 54 SPECIFICATIONS 2 an EE EE EE EE OE EE d 54 7 1 Reference conditions 54 7 2 Specifications per function 54 7 3 Power supply 2 98 7 4 Environmental conditions 08 7 5 Mechanical specifications 2 nente tocadas dea daens 59 7 6 Conformity to international Standard Sssnake dg eiad eee 59 MAINTENANCE EE e eh ien n E eh ee e re A E e E N ts 59 8 1 UPKEEP M M 59 WARRANTY ide hd ed de ea d n EE OE EE ed c N 60 TO OBDER oon eie en p ni EE etg E d Eg Vf Lei 61 ATTACHMENT 11 1 Front view 11 2 Examples Of applications o
26. d W buttons The display of Parallel means that parallel mode has been selected for printing on a parallel printer via the serial to parallel adapter RS 232 Centronics 4 7 3 Lead resistance compensation In SET UP press the K button three times The p lt symbol appears and the small display indicates On It is possible to select OFF with the button In this instance the lead resistance will not be subtracted when carrying out continuity measurement To memorise the lead resistance Connect them together and press START in SET UP position y y The resistance of the leads will be memorised and indicated on the main display Note This value is stored in memory even when the instrument is switched off The lead compensation only comes into effect when carrying out continuity measurement To activate deactivate this function simply select On or OFF on the small display with the button The memorised value will be stored and displayed on the main display but can be activated or deactivated depending on what the small display indicates Values between 0 and 5 Q can be saved for leads compensation Beyond this value nothing is saved 4 7 4 Default device configuration lt gt In SET UP press the i button four times The small display indicates SEt flashing The main display indicates DFLt Press START to select the default configuration settings see the previous table 4 7 5 Barri
27. e warning symbol flashes and the measurement in progress is stopped Note There are several special functions that can be used see 4 5 2 Insulation measurement see 3 2 When using this function the instrument can measure insulation from 1 kQ to 40 GQ at a test voltage of 50 V 100 V 250 V and up to 1 TQ at 500 V and 1000 V M Select with the rotating switch MQ 50 V or MQ 100 V or MQ 500 V or MQ 1000 V W Connect the instrument to the insulator to be tested If the voltage present exceeds 8 V for MQ 50 V or 16 V for MQ 100 V or 25 V at all the other test voltages then measurement is prohibited M Start the measurement and read off the results It is possible to scroll through the results on the main display with the R DAR PI button or on the small display with the V TIME button see 3 2 Using R t when carrying out a time controlled test it is possible to scroll through the interval measurement values saved at the sampling rate specified in SET UP These samples are available until another measurement is got underway or the selector switch is turned see 4 3 When measuring high levels of insulation gt 1 GQ it is advised that the guard terminal should be used to eliminate the influence of surface leakage currents The guard is connected between the two measurement contact points to the surface susceptible to surface currents e dusty or damp cable or transformer insulation In this case croc clips
28. ions the main display indicates Q for continuity or KQ for resistance and the small display indicates the voltage present on the and terminals A If the voltage is gt 3 V Ac pc and the START STOP button is pressed the y symbol flashes and the audible alarm gives out beeps for 2 seconds telling you that the measurement was denied then the device goes back to its normal voltage measurement A If the voltage is lt 3 Vac and the START STOP button is pressed the measurement goes ahead B The main display indicates the continuity or resistance value in progress and the small display indicates the voltage present on the and terminals A Buttons R DAR PI V TIME and SMOOTH are not active for these functions There is no automatic polarity change for continuity measurement If during continuity or resistance measurement an external voltage gt 25 Vac 3 V or 35Vpc is detected the measurement is stopped whilst the voltage is applied to the instrument The A symbol flashes and the voltage value is indicated on the small digital display If the ALARM function is activated a buzzer is triggered as soon as the measurement crosses the threshold programmed in the SET UP configuration menu 4 SPECIAL FUNCTIONS 4 1 4 Button Use this button to select the second function activated by the buttons it is always associated with the oe symbol This symbol disappears upon pressing the function button chosen except if
29. mall symbols values Duration of O 15 00 min sec 1 59 min time controlled test 1 and 2 times for R DAR PI second time first time min sec 00 59 PI calculation 10 min 1 min Time between interval samples in 7 R t 00 30 min sec 5s 10 min time controlled test Limit for MQ 50 V ALARM 50 kQ 50V ALARM lt 2k 200 G and lt gt Limit for MQ 100 V ALARM 2 press 100 kQ 100 V ALARM lt 4k 400 Gand lt gt Limit for MQ 250 V ALARM 3 press 250 kQ 250 V ALARM lt 10 k 1 T and lt gt Limit for MQ 500 V ALARM 4 press 500 kQ 500 V ALARM lt 20 k 2T and lt gt Limit for MQ 1000 V ALARM 5 press 1000 ko 1000 V ALARM lt 40 k 4 T and lt gt Limit Toro ALARM 6 press 100 ke rES ALARM e 001 400 ke resistance measurement and lt gt Limit Tor 40 f2 ALARM 7 press 20 Cont ALARM lt 0 01 40 2 and lt gt continuity measurement hh 0 23 Time V TIME 12 55 i mn 0 59 Date European version V TIME 2 press 17 03 1999 dd mm yyyy Version USA European V TIME 3 press USA Euro USA Euro Memory wipe MEM then MEM 2 s cLr ALL MEM Selective wiping of MEM then gt and cLr OBJ TEST MEM 00 99 memory and MEM 2 s number OBJ TEST Baud PRINT 9600 bAUd 200 2000 or parallel Buzzer pa On ei On OFF RP Auto switch off i 2 press On qe On OFF D Compensation i 3 press On On OFF then A and START value if START 0e and 0 01 5 Q RP Default configuration i A pres
30. necessary to press the 4 button each time to get to the W function The 4 symbol remains displayed and thus valid for the Y function only as long as the user does not deactivate it by pressing 4 or another button 4 7 SET UP function This function found on the rotary selector switch is used to alter the device configuration by directly accessing the parameters to be modified After having selected SET UP with the rotary selector switch all the display segments are lit up for 1 second the software version number is displayed the instrument serial number is displayed PUSH comes up on the small display and btn on the main display inviting the operator to press a button The SET UP function is used to directly access the parameters to be modified by pressing the corresponding button After having pressed a button the figures or the symbols corresponding to the selected function appear on the screen The figures or the symbols that can be modified flash on the screen The usual modification procedure using the and buttons should be followed All the parameters are immediately and permanently saved The table on the following page defines the buttons that are functional when in SET UP and the corresponding display with the possible range of adjustment Parameters Command button Display to modify main s
31. nent use on fixed industrial installations see EN 61010 Ed 95 W Use connection accessories with overvoltage category and service voltage that are above or equal to that of the test instrument 600 V Cat III Only use accessories that comply with the safety standards EN 61010 2 032 B Observe the correct value and type of fuse see 8 1 3 at risk of damaging the device and rendering your guarantee void M Select the OFF position on the selector switch when the device is not in use M Check that none of the terminals are connected and that the selector switch is set to OFF before opening up the instrument M All repairs and metrological verification procedures must be carried out by qualified personnel 10 11 CONTENTS PRESENTATION cem EE EE OR EE N 1 1 Megohmmeters au EE oe od OE EE N ie cont erede vere reet vv eve s EO eee ears atten ek vespa vr eer da DESCRIPTION niece ce ede cere aes iH ee EE EE Ee EE 2 1 Unit overview wigs 22 DISDIAY MEASUREMENT FUNCTIONS sn rrr nre t e ENE ERGER NEE EKKE R na orae excu 39 31 AGZDG Vollage ii teo eti tette iia 39 3 2 Insulation measurement rore ba tene ttn ennen kai I o Fa dieen ERK EEA REK RES GE ER EE Ee Ge SNR Ai 39 3 3 Continuity 40 Q ey resistance 400 KO nanne GEREGEER GER Ee KERSE ER Ge ER Ge Re gek ee Re 40 SPECIAL FUNCTIONS AA MEN A 4 2 V TIME Button es 43 Ee GE SR ON Button sanne OE EE ease
32. ng of insulation measurement This function prohibits insulation measurement from being carried out at certain test voltages This makes it possible the entrust the instrument to less experienced operators for specific applications for example telephone In SET UP press K 5 times or more depending on voltage to be barred The test voltages appear in succession on the small display with the K button and On OFF on the main display Choose On or OFF using the button for each test voltage to bar OFF or to reinstate On the access to the insulation tests at these voltages 5 USE 5 1 Measurement procedure M Start up the device by selecting the corresponding position MQ 40 Q ey or 400 kQ with the selector switch All the segments on the LCD screen are displayed then the battery or rechargeable battery voltage M Connect the leads to the and terminals and the points of measurement W The input voltage is constantly measured and displayed on the small display If an external voltage is present that is greater than the thresholds described in 5 2 5 3 and 5 4 then measurement is prohibited E Pressing START STOP starts measurement M Pressing START STOP once again stops measurement The last result remains displayed until the next measurement or turn of the selector switch If a voltage gt 25 Vac or 35 Voc is detected during all measurements the instrument indicates this voltage on the small display th
33. nt of multi junction components thyristors high voltage diodes The open circuit voltage is equal to the voltage of the battery C A 6541 or rechargeable battery voltage C A 6543 NOTE the R DAR PI and V TIME buttons are not active in this function 5 5 Capacitance measurement Capacitance measurement is automatically carried out during insulation measurement and is displayed after the measurement is stopped and the circuit is discharged using the R DAR PI button 6 MEMORY RS 232 C A 6543 6 1 RS 232 Specifications W The signalling speed in Bauds can be set to 300 600 1200 2400 4800 9600 or Parallel for the printing of results on parallel printers via the optional serial to parallel adapter This setting is carried out in the SET UP menu see 4 7 M Data format 8 data bits 1 stop bit without parity Xon Xoff protocol Wi Serial printer connection Front view Front view 9 pin female connector 9 pin male connector to C A 6543 to serial printer W Connection to a PC or to a parallel printer 9 pin connector to C A 6543 9 pin connector to PC 25 pin connector 25 pin connector to PC or serial to parallel adapter Necessary links DB9 gt B25 O m DB25 gt DB9 conversion 0 null cable standard modem 128 6 20 223 222 725 322 3293 824 725 426 9222 5237 6 2 Saving recalling values MEM MH button 6 2 1 First function MEM save With this function res
34. ntity Reference values Temperature 23 C 3K Relative humidity 45 to 55 Supply voltage 9to12V Frequency range DC and 15 3 65 Hz Parallel resistance on the resistor 0 uF Electric field nil Magnetic field lt 40 A m 7 2 Specifications per function 7 2 1 Voltage Measurement range Resolution Frequency range A 1000 V 1V DC 16 420 Hz A W Accuracy 1 R 3 cts AC sinusoidal or DC voltage W Input resistance approx 750 ko WARNING This instrument is Cat III 600 V according to EN 61010 1 A2 ed 95 It shall not be connected to voltages 600 V in relation to the earth 7 2 2 Insulation resistance M Method Voltage current method according to EN 61557 2 ed 02 97 B Nominal output voltage 50 100 250 500 1000 Voc B Open circuit voltage 1 1 x Vn 5 V 50 100 250 500 1000 V B Nominal current gt 1 mApc at the nominal voltage B Short circuit current lt 6 mApc B Max overvoltage Urms max 1200 V AC and DC for 10 seconds between the and terminals 660 V AC and DC between the G and or G and terminals B Measurement ranges 50V 2kQ 200 GQ 100V 4kQ 400 GQ 250V 10kQ 1 TQ 500V 20k0Q 2TQ 1000 V 40 kQ 4 TO FETE Ea KIS anea o OWE ms woso Es 1 000 3 999 MQ MQ 1 000 3 999 GQ GQ 1 000 3 999 MQ GQ TQ Resolution 1kQ 10 kQ 100 kQ 1MQ 10 MQ 100 MQ 1GQ Voltage 50 100 250 50 100 250
35. ol flashes and the display shows as long as the calculation of the coefficient is not possible t 10 mn e g PI Sete 2 After 10 min measurement stops and the main display automatically shows the PI value During and after measurement the R DAR PI button makes it possible to display the DAR after 1 min the PI after 10 mn and the insulation measurement Note If during DAR or Pl measurement automatic or not a high external interference voltage becomes present or the insulation resistance goes off the device s measurement range then the DAR or Pl measurements are interrupted and the screen indicates NI N Ef DAR gt MQ aj NA WON or Nl IN I Pl Zes MQ d NA UN Note The 10 min 1 min measurement durations for Pl calculation can be modified in the SET UP menu see 4 7 allowing adaptation to possible changes in standards or to suit a particular application B Second function R t The R t button is used to access the interval insulation resistance values as a function of time after a measurement in Time controlled test mode 7 see 4 2 The time between each saved sample is programmed in the SET UP menu This function is also available on model C A 6541 which has neither a read write memory for saving measured data nor an interface for data retrieval from the instrument by a PC On the C A 6541 up to 20 samples can be recorded by the instrument during
36. ontrolled test other results are printed interval samples Time Resistance Voltage 00 30 35 94 GOhm 1005 V 01 00 42 00 GOhm 1005 V 01 30 43 50 GOhm 1005 V etc A space for the operator to fill in their signature comes at the end of the printout E Continuity or resistance measurement CHAUVIN ARNOUX C A 6543 Instrument number 000 001 CONTINUITY TEST or RESISTANCE TEST OBJECT 01 TEST 01 only printed in MR DESCTIPION imita Date coimas 31 03 1998 Statt time 3 ngen 14 55 Test current gt 200 mA Lead compensation 0 120 Potential difference 0 9V Continuity or Resistance 0 45 Q Comments cueste tf Date of next test nnen en A space for the operator to fill in their signature comes at the end of the printout 6 3 2 Printing of memorised data PRINT MEM button Use this function to print out the contents of the device s read write memory The small display indicates 01 01 for the OBJ TEST number starting address of printing The main display indicates the last recording in memory the end address of printing e g 12 06 01 flashes opposite the OBJ position the usual modification procedure should be used gt and buttons in order to define the start end addresses of the print out To quit without printing alter the position of the selector switch To go ahead with printing press the PRINT button once more
37. s DFLt SEt then START l Barring of insulation test i 5h press On 50V On OFF KP Barring of insulation test i 6 press On 100V On OFF RP Barring of insulation test i 7 press On 250V On OFF RP Barring of insulation test i 8 press On 500 V On OFF lt gt Barring of insulation test i 9 press On 1000 V On OFF The values shown on this table in the Display main and Display small columns are the default values programmed in during manufacturing In case they are accidentally changed it is possible to get them back see 4 7 4 4 7 1 Wiping the memory In SET UP press the MEM button The MEM symbol flashes The small display indicates ALL The main display indicates cLR To wipe the entire memory press the MEM button again for 2 seconds The MEM symbol is displayed without flashing The main display indicates FrEE To wipe the contents of a specific OBJ TEST number Select the number using the and buttons cLr remains displayed on the main display Press the MEM button again for 2 seconds to wipe the contents The OBJ TEST number is indicated on the small display The main display indicates FrEE 4 7 2 Signaling speed in Bauds RS 232 In SET UP press the PRINT button The main display indicates the signalling speed in bauds either 300 600 1200 2400 4800 9600 or Parallel On the small display baud appears The value can be changed using the A an
38. ssume that a 10 minute long Pl measurement is made 5 times a day the operating radius will be 67 days or 10 weeks or 2 5 months 2 If we assume that a 10 minute long Pl measurement is made 5 times a day the operating radius will be 16 days or 2 5 weeks or 0 5 months EB Recharging time C A 6543 4 5 hours to reach 100 of its capacity Max recharge time 6 hours 0 5 hours to reach 10 of its capacity gives operating radius 1 day approx W The CA 6543 can make measurements whilst the internal batteries are being recharged from the mains 74 Environmental conditions B Operating range 10 to 40 C during recharging of batteries 10 to 55 during measurement 20 to 80 RH W Nominal temp range 0 to 35 W Storage 40 to 70 C 10 to 90 RH W Temperature influence on measurement accuracy for all functions 0 15 per C E Altitude lt 2000 m 7 5 Mechanical specifications m Outside dimensions of casing L x W x H 240 x 185 x 110 mm m Weight approx 3 4 kg 7 6 Conformity to international standards m Electrical safety according to EN 61010 1 A2 ed 95 EN 61557 ed 97 m Double insulation Al m Pollution level 2 m Installation category III m Max voltage in relation to earth 600 V 7 6 1 Electromagnetic Compatibility m Emission NF EN 55 081 1 June 92 m Immunity NF EN 55 082 1 June 95 7 6 2 Mechanical protection IP 54 according to NF EN 60529 Oct 92 IK 04 according to NF EN 5010
39. surement has been stopped the main result remains displayed It is possible to scroll down all the other results available on the main display using the R DAR PI button This button can also be used before measurement is begun see 4 3 If the Time controlled test mode has been selected the R t button makes it possible to access all the saved interval measurements automatically see 8 4 2 and 4 3 If the ALARM function is activated a buzzer is triggered as soon as the measurement crosses the threshold programmed in the SET UP configuration menu see 8 4 4 W Display of values after measurement The following information may be displayed R DAR PI button V TIME button Main Small Small display Display display if the MR button is pressed C A 6543 Resistance duration min sec date time test voltage OBJ TEST DAR duration min sec date time test voltage OBJ TEST Pl duration min sec date time test voltage OBJ TEST Capacitance R t duration min sec last voltage i Capacitance uF measurement is only displayed after the measurement is finished and the circuit has been discharged 3 3 Continuity 40 Q e resistance 400 KQ Continuity measurement is carried out on the 40 Q current position with a test current gt 200 mA up to 20 Q resistance measurement on the 400 kQ position with a test current 6 mA B Once the selector switch has been turned to one of these 2 posit
40. the table below then pressing the yellow START STOP button does not bring about insulation measurement but instead triggers a discontinuous audible signal beep beep beep and the A symbol flashes for 2 seconds then the device goes back to automatic voltage measurement If the external voltage present at the device terminals is below the thresholds shown below then insulation measurement can go ahead Test Max voltage allowed voltage for measurement 50V 8V 100 V 16 V 250 V 50 V 500 V 50 V 1000 V 50 V Pressing START immediately begins the measurement The measurement value is displayed on the main digital display and on the bar graph An audible beep is given out every 10 seconds to indicate that measurement is in progress If the generated voltage is liable to be dangerous gt 120 V the A symbol is displayed If during insulation measurement an external voltage gt 25 Vac 3 V or 35Voc is detected the measurement is stopped as long as the voltage is applied to the instrument The A symbol flashes and the voltage value is indicated on the small digital display If the measurements fluctuate greatly it is possible to use the SMOOTH function see 8 4 5 By pressing the V TIME button during measurement you can alternate between displaying on the small display the duration of the voltage measurement and the exact voltage generated see 4 2 Pressing the STOP button stops the measurement After the mea
41. two screws Take care not to damage the seal during removal and replacement of the front panel unit 8 1 2 Recharging the battery C A 6543 If the symbol appears flashing then it is necessary to recharge the battery Connect the instrument to the mains AC network via the connector charging starts automatically E bAt on the small display and CHrG on the main display signifies fast charging in progress E bAton the small display and CHrG flashing on the main display signifies slow charging starts off with fast charge temperature conditions permitting E bAt on the small display and FULL on the main display signifies that charging is over If the instrument is started up and the battery voltage is 8 V then the normal use of the device is permitted The battery should be changed by Manumesure or a repairer recognised by CHAUVIN ARNOUX Changing the battery causes data to be lost from the memory Press the MEM MR button and OFF is displayed Procede with a total memory wipe in SET UP see 4 7 1 so the MEM MR functions can be used again 8 1 3 Replacing the fuses If FUS HI or FUSE G flashes on the LCD when switching on or during continuity measurement then it is imperative that the corresponding fuses should be changed taking all the necessary precautions when opening up the instrument see 8 8 1 1 for opening procedure Check that none of the terminals are connected and that the selector switch is set to OFF before
42. uch rtt da dit rens 153 111 3 ACCEESOM S 156 1 PRESENTATION 1 1 Megohmmeters Megohmmeters C A 6541 and C A 6543 are portable instruments each housed in robust casing with lid and operating on batteries C A 6541 or on a rechargeable battery and the mains C A 6543 They can be used to measure voltage insulation continuity resistance m capacitance These megohmmeters contribute to the safety of electrical installations and equipment Their functioning is micro processor controlled for data acquisition processing displaying measurements memory storage and the printing of results C A 6543 They offer a number of advantages such as m digital filtering of insulation measurements running measurements with the help of a remote control probe automatic voltage measurement in all functions automatic detection of external AC or DC voltages on the terminals before or during measurements which prohibits or stops measurement no matter what function you re in threshold programming in each function triggering audible alarms timed control of measurement duration fuse protection of the device with defective fuse detection operator safety thanks to the automatic discharge of the residual high voltage on the tested device automatic device switch off to save the batteries C A 6541 or the rechargeable battery C A 6543 the battery wear indicator C A 654
43. ults may be recorded on the device s read write memory These results are stored under addresses defined by an object number OBJ and a test number TEST An object represents a box into which we can place 99 tests Thus an object can represent a machine or an installation upon which a certain number of various measurements insulation resistance continuity are carried out 1 When the button is pressed the MEM symbol flashes and the small display indicates the first free OBJ TEST number e g 02 01 The main display indicates FrEE The OBJ number is the same as that of the last saved measurement but the TEST number goes up in 1 s It is always possible to modify OBJ TEST with gt and t If the user happens to select a memory address that is already occupied then OCC appears on the main screen If a new OBJ is selected TEST goes back to 01 2 By pressing MEM once again the present measurement results will be recorded in the selected memory address occupied or otherwise The MEM symbol stops flashing and remains displayed The time and the date of this recording are memorised with the available data R V t If a button other than MEM or the selector switch is activated before pressing MEM a second time the instrument exits from MEM mode without having saved the results 3 If a time controlled test has been carried out interval values samples are available see S 4 3 They are automatically saved under the same OBJ T
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