C.A 6531 C.A 6533
Contents
1. 36 6 SPECIFICATIONS 2 37 6 1 Reference conditions 37 6 2 Characteristics per function 37 6 2 1 Voltage anf 6 2 2 Insulation trier niente 37 6 2 3 Resistance 38 6 2 4 Capacitance 6531 98 6 2 5 Distance 6531 98 6 2 6 AC DC current 6531 138 6 2 7 AC voltage 6531 1 99 6 3 Power supply 1 99 6 4 Climatic conditions i 39 6 5 Variations in nominal field of use 40 66 Limits iniri 40 6 7 Construction specifications 2 40 6 8 Compliance with international standards 40 6 8 1 Electromagnetic compatibility EC compliance 41 6 8 2 Mechanical protection 7T MAINTENANCE eene 7 1 7 1 1 Replacing the batteries 7 1 2 Replacing the fuse 6531 41 7 14 3 Cleaning een 242 7 1 4 Storage 2 42 7 1 5 Calibration 2 42 7 2 Maintenance 2 42 8 WARRANTY nones 42 97 CTO ORDER usb ates 43 10 ATTACHMENT 107 10 1 Front views he 10 11 CA 65ST intecis etri 107 10 1 2 TCA 6533 4 ia ien epe rent 108 10 2 Examples of applications 109 102. 6531 at 50V 10 kw to 400 Mw at 100 V 20 kw to 400 Mw 6533 at 50V 10 kw to 2 Gw at 100 V 20 kw to 2 Gw at 250 V 50 kw to 20 Gw at 500 V 100 kw to 20 Gw Analogue calibre 70 kw 1 1 Gw Resolution 8 segments per 10 unit interval Accuracy 596 R 1 segment Models C A 6531 and C A 6533 C A 6533 Digital 0 01 to 0 20 to 40 0 to 400 to 4 00 to calibres 0 19 Mw 39 99 Mw 399 9 Mw 3999 20 00 Gw Resolution 10 kw 100 kw 1Mw 10 Mw Accuracy 8 R 5ct 3 R 2ct 5 R 2ct Models C A 6531 and C A 6533 C A 6533 Test Voltage 50V 100 V 250 V 500 V Voltage at lt 75V lt 150 lt 300v lt 600V open circuit Test 31mA 31mA 31mA 31mA t for for for for R 50kw R 100kw R 250kw R 500 kw Short circuit 3mA current The residual voltage present on the terminals when the yellow key is released is discharged through the instrument via the measurement leads in 3 to 6 s uF according to the measurement for the 6531 and in less than 2 s uF for the 6533 6 2 3 Resistance Measurement range 0 to 40 kw for the 6531 0 to 400 kw for the 6533 Models C A 6531 and C A 6533 C A 6533 Auto 0 0 399 9 400 3999 4 00 39 99 40 0 399 9 calibres wW W kw kw Resolution 0 1 W 1w 10 100 w Accuracy 3 2 3 1 Measurement 55 ou 550 acc
3. MEGOHMMETRES MEGOHMMETERS MEGOHMMETER MEGAOHMMETRI MEGAOHMETROS C A 6531 C A 6533 Notice de fonctionnement User s manual Bedienungsanleitung Libretto d Istruzioni Manual de Instrucciones English Meaning of the 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 ni 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 the parts marked with this symbol may be dangerous For safety reasons this symbol will light up on the LCD screen as soon as a voltage is generated Thank you for purchasing a C A 6531 or C A 6533 insulation tester To get the best service from this instrument W read this users manual carefully W respect the safety precautions detailed PRECAUTIONS FOR USE W Comply with the conditions for use temperature humidity altitude degree of pollution and place of use W This instrument can be used on category lll installations for voltages not exceeding 600 V in relation to the earth Category Ill meets severe reliability and availability requ
4. 3 1 1 AC DC voltage measurement 3 1 2 Insulation Measurement we Resistance m aiao aaa vei teats Capacitance 6531 AC DC current C A 6531 sn AC voltage 6531 SPECIAL FUNCTIONS Start stop Automatic shutdown 4 2 1 Deactivation of the automatic shutdown function sess 32 Autotests s endete re duncan rena T 32 4 3 1 Power supply eee 32 4 3 2 Fuse 6531 32 22 sii aiar editi re 32 4 41 different audible signals 32 4 4 2 Deactivation of the buzzer s 93 Alarm thresholds eneen 33 4 5 1 Programming of the alarm thresholds 33 4 5 2 Activation deactivation of the alarm thresholds 4 5 3 Triggering of the alarm Relative measurements DREL Programming the capacitance per unit length 6531 34 5 5 USE ciue ee idees 35 5 1 AC DC voltage and insulation measurement 35 5 2 Resistance measurement 5 3 Capacitance measurement 6531 se 5 4 AC DC current measurement 6531 36 5 5 AC voltage measurement 6531
5. 2 1 Insulation measurements on electrical installations 109 10 2 2 Measurement on electrical or telecom cable 110 10 2 3 Capacitance measurement between wires 6531 111 10 2 4 Insulation measurements motors 112 10 3 Accessories ii 10 3 1 Shoulder bag 10 3 2 Use of the shoulder bag 10 3 3 Remote control probe 1 PRESENTATION 1 14 General Presentation 1 1 1 The Megohmmeter These portable instruments function with batteries or a vehicle battery They can be used to check insulation and voltages and to measure resistances The C A 6531 can also be used for m measurement of the capacitance of a telephone line m current measurement m measurement of the pure alternating component of a DC voltage These megohmmeters help to ensure the safety of electrical and telephone installations The acquisition processing and display of the measurements are managed by a microprocessor They offer a wide range of advantages such as m automatic detection of the presence of a dangerous voltage on the terminals in Mw calibres all insulation measurement blocked if U gt 25 V m protection of the instrument against external voltage surges m operator safety by means of automatic discharge of the high voltage on the equipment tested m display of the difference
6. compared to a measurement value in memory m measurement of the length of a telephone line according to its capacitance per km unit length C A 6531 m automatic shutdown of the instrument to save the batteries and indication of the battery charge m fuse testing by periodic checks during current measurement C A 6531 m a large backlit LCD screen with a wide range of indicators making it very easy for the user to read 1 1 2 Accessories E Carrying bag part of standard delivery see 10 When placed in the carrying bag the instrument can either be carried on the shoulder to transport it or around the neck for use This leaves the users hands free to perform the measurements Since the instrument is perpendicular to the chest it is easy to read At the bottom of the shoulder bag underneath the instrument there is a pocket for the leads the touch prod the crocodile clamp and the remote control probe W Remote control probe option see 10 This probe is plugged in to a special connector It can be used for all the measurements including activation of insulation testing using the yellow button which works in exactly the same way as the button on the instrument A pushbutton on the back of the probe allows you to light the measuring point approx 500 lux This function is very useful since insulation testing is performed on installations with the power off 2 DESCRIPTION 2 1 Housing See the diagrams of the in
7. display will flash If a lower threshold of 100 Mw is active the display indicates ALARM 100 0 Mw If the measurement falls below this value a continuous beep will be triggered and the whole digital threshold display will flash 4 6 Relative measurements DREL Pressing the DREL key enables you to store the value measured in the memory The measurements that follow are differences compared with the value in memory These differences may be positive or negative The DREL symbol is displayed Another press clears the value from the memory and returns the instrument to normal mode This key can be used at any time except in voltage mode on the Mw positions 4 7 Programming the capacitance per unit length C A 6531 When the switch is set to nF a long press on the ES key activates the programming mode for the capacitance per unit length of the line to be measured The value in memory is displayed on the digital threshold display along with the nF km symbol If no value was programmed previously the display indicates 50 nF km by default It is then possible to modify the value present see 2 2 3 During programming if you change the switch position you lose what you have just done You can quit the programming mode and record the value by another long press on the key 5 USE To display the device software version and series number press the yellow button whilst switching on via the rotating switch To start
8. has ended release the yellow key and wait for the installation tested to discharge voltage 25 V before disconnecting the leads W Ifthe digital value fluctuates greatly for large values gt 500 Mw this means it is a highly capacitive load In this case read the measurement from the bar graph Note The user can control the backlighting as required by pressing the gt key A programmed alarm threshold may be activated with the ALARM key see 4 5 5 2 Resistance measurement Start up the instrument by setting the switch to 40 kw C A 6531 or 400 kw C A 6533 W Connect the and leads to the measurement points W Note the resistance value displayed see 3 2 Note The user can control the backlighting as required by pressing the key A programmed alarm threshold may be activated with the ALARM key see 4 5 5 3 Capacitance measurement 6531 W Start up the instrument by setting the switch to 4000 nF W Connect the and leads to the measurement points W Note the capacitance value displayed see 3 3 and the length of the line after programming its capacitance per unit length Note The user can control the backlighting as required by pressing the key 5 4 AC DC current measurement 6531 Start up the instrument by setting the switch to 400 mA W Connect the leads from the mA and terminals to the measurement points The fuse is checked at start up and after every measureme
9. 2 Bargraph b Insulation 1 1 Gw Insulation 70 kw 2 2 3 Digital display BAT Batteries low must be changed OL Range exceeded Insulation lt 10 kw at 50 V lt 20 kw at 100 V lt 50 kw at 250 V lt 100 kw at 500 V 2 3 Control keyboard 2 3 1 Yellow key When this yellow key is pressed a high voltage is generated for insulation testing However if a voltage greater than 25 V has been detected no insulation testing is allowed and the key becomes inactive The instrument remains in voltage measurement mode 2 3 2 ALARM key The ALARM key can be used to activate deactivate the alarm thresholds during insulation and resistance measurements When associated with the gt and keys it can be used to program the values of these thresholds 2 3 3 P Key This key can be used to program W The alarm thresholds with the ALARM key By pressing the gt key you can make the following elements flash successively the measurement unit digit if there is one the thousands digit the hundreds digit the tens digit the units digit the decimal separators the type of threshold upper or lower and it then returns to the measurement units W The capacitance per unit length in nF km with the I key on the CA 6531 By pressing the key you can make the following elements flash successively the tens digit the units digit and it then returns to the tens digit 2 3 4 A Key Whe
10. 35 g m Materials Polycarbonate housing Crystal polycarbonate screen Elastomer external mouldings Silicon keyboard m Stand Enables the instrument to be tilted at 30 It clips onto the bottom of the housing when not in use 6 8 Compliance with international standards m Electrical safety IEC 1010 1 A2 Nov 95 IEC 61557 Feb 97 and DIN EN 61557 m Dual insulation 6 m Pollution level 2 m Installation category III m Rated voltage 600 V 6 8 1 Electromagnetic compatibility EC compliance m Emission NF EN 55 081 1 Ed 92 m Immunity NF EN 55 082 1 Ed 95 6 8 2 Mechanical protection IP54 as per NF EN 60529 Oct 92 IK04 as per NF EN 50102 June 95 7 MAINTENANCE To display the device software version and series number press the yellow button whilst switching on via the rotating switch 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 7 1 Upkeep 7 1 1 Replacing the batteries Before performing any measurements make sure that the symbol does not appear on the display after the start up phase If it does appear you must change all the batteries taking all the necessary precautions when you open the instrument Check that none of the terminals is connected and that the switch is set to OFF before opening the battery compartment The hatc
11. ch it back on again 4 3 Autotests 4 3 1 Power supply The power supply voltage is measured automatically once every second The voltage range ensuring correct operation is between 7 V and 10 V Depending on the result of the autotest there are four possible cases W The voltage is correct The symbol is not displayed on the screen W The remaining charge life is low U 7 1 V the symbol flashes W Measurement accuracy is no longer guaranteed change the batteries U 6 9 V the symbol remains lit continuously W The voltage is close to interrupting operation of the clock U 6 7 V the digital display indicates BAT and then after 5 seconds the shutdown buzzer sounds and the automatic shutdown function is activated The instrument shuts down 4 3 2 Fuse C A 6531 The fuse is automatically tested when switching on the instrument and at the end of each current measurement 4 4 Buzzer 4 4 1 The different audible signals When the 2 symbol is displayed the buzzer is active It gives out different audible signals depending on the situation Wi Short buzz 65 ms at 2 kHz in the following cases press on a key automatic shutdown W Continuous buzz at 2 kHz in the following cases when the measurement is lower than the minimum threshold when the measurement is higher than the maximum threshold E Short higher buzz 65 ms at 4 kHz when an inactive key is pressed W Series of short high buzzes 4
12. e its measurement range If the insulation resistance is greater than 400 Mw C A 6531 2 or 20 Gw C A 6533 the OL symbol is displayed on the digital measurement display When the measurement is greater than 1 1 Gw even on the C A 6531 the p gt symbol lights up on the right hand side of the bargraph Similarly the digital measurement display indicates if the insulation resistance is less than 6531 10 kw at 50 V or 20 kw at 100 V 6533 10 kw at 50 V or 20 kw at 100 V or 50 kw at 250 V or 100 kw at 500 V When the measurement is less than 70 kw only the lt symbol lights up on the left hand side of the bargraph To measure high insulation values you are advised to use the G guard terminal to remove the influence of superficial leak currents and hand capacitance see 10 2 2 3 2 Resistance Resistance measurement corresponds to the 40 kw position of the switch on the C A 6531 and the 400 kw position on the C A 6533 The measurement is indicated on the digital measurement display accompanied by the w or kw symbol if necessary The instrument indicates if the value measured is outside its measurement range If the resistance is greater than 40 kw or 400 kw depending on the instrument the OL symbol is displayed on the digital measurement display A programmed threshold may trigger an alarm see 4 5 3 3 Capacitance 6531 Capacitance measurement corresponds to the 4000
13. ed and black 6 LR6 batteries and this 5 language user s manual Accessories Remote control probe P01 1019 35 Spare parts m 2 elbowed straight safety leads red black 1 5 m long P01 2950 88 m 3 x 1 5 m long straight straight safety leads red blue guarded black P01 2951 71 m 5 crocodile clips red black blue white green yellow P01 1018 49 m 2 wire grips red and black P01 1018 53 m 1 shoulder bag for transport and hands free use P01 2980 49 m 1 set of 5 fuses 0 63 P01 2970 78
14. h is located on the back of the unit It can be opened and closed using a coin or a large screwdriver 1 4 turn captive Screw To avoid errors the symbol on the power supply board shows the direction in which the 2 x 3 LR6 1 5 V batteries should be mounted Make sure that you put the hatch back properly and close it after changing the batteries 7 1 2 Replacing the fuse C A 6531 If FUS appears on the digital measurement display during the start up phase or when measuring continuity you must change the fuse taking all the necessary precautions when opening the instrument Check that none of the terminals is connected and that the switch is set to OFF before opening the battery compartment on the back of the instrument It can be opened and closed using a coin or a large screwdriver 1 4 turn captive screw The fuse is placed on a fuse carrier welded to the power supply board To avoid any errors the text F 0 63 A is written next to the fuse carrier Make sure that you replace the faulty fuse with a new fuse of the same rating and type and then replace and close the hatch Exact type of fuse FF 0 63 A 660 V 6 3 x 32 mm 30 kA printed on the battery compartment label 7 1 3 Cleaning The instrument must be disconnected from any source of electricity Use a soft cloth slightly moistened with soapy water Rinse with a wet cloth and dry quickly with a dry cloth or pulsated air Do not use alcohol solvents or hydrocarbo
15. he DC component is not measured If the voltage measurement is greater than 400 V AC the OL symbol is displayed on the digital measurement display 4 SPECIAL FUNCTIONS 4 1 Start stop When you move the switch from the OFF position to one of the active positions the instrument is started up All the display segments light up at the same time for 1 second Then all the segments go out except for 2 seconds the E h lt and gt symbols which delimit the size of the bargraph The bargraph indicates the battery charge life and the digital measurement display indicates the charge life available 0 00 to 1 00 0 to 100 The instrument can be shut down at any time by resetting the switch to OFF 4 2 Automatic shutdown After 5 minutes without any activity by the user on the instrument key press on the keyboard or on the yellow key on the remote control probe or turn of the rotary switch the instrument shuts down automatically It is then on standby When this is the case to start up the instrument again all you have to do is press one of the keys turn the switch or press the yellow key on the remote control probe 4 2 1 Deactivation of the automatic shutdown function Press the gt button whilst switching on the device with the rotating switch The displayed indicates that the device is in continuous use mode To reactivate the automatic shutdown function switch the instrument off turn the switch to OFF and then swit
16. irements corresponding to permanent use on fixed industrial installations see IEC 1010 1 A2 W Use connection accessories that comply with the applicable IEC safety standards with a minimum voltage and voltage surge category at least equal to those that you use for your measurements W 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 W Do not perform any insulation or resistance measurements when the presence of a voltage is indicated W Check that none of the terminals is connected and that the Switch is set to OFF before opening the instrument 2 1 2 2 2 3 3 1 3 2 3 4 3 5 4 1 4 2 4 3 44 4 5 4 6 4 7 CONTENTS PRESENTATION General Presentation eee 1 1 1 The Megohmmeter ES 1 1 2 Accessories Housing m Dito CIA 6531 icone ep a 21 2 0 A 6539 cac e ee etu Display 2 2 4 Symbols 2 2 2 Bargraph 2 2 3 Digital display Control keyboard Ae 2 3 1 Yellow key eene 2 3 2 ALARM Key eec 23 9 Ue aen bee eet tete ose 2 34 A Kay tee tee ed 2 3 5 gt Key 2 8 6 DREL MEASUREMENT FUNCTIONS Insulation Raiano
17. kHz if the voltage measured is greater than 25 V and the user is pressing the yellow key 4 4 2 Deactivation of the buzzer Press the ALARM button when switching on the device with the rotating switch The symbol is no longer displayed To reactivate the buzzer switch the instrument off and then back on again 4 5 Alarm thresholds Thresholds can only programmed for insulation and resistance measurement The thresholds can be upper or lower thresholds They can be active or inactive and will be stored in the memory even after the instrument has been switched off 4 5 1 Programming of the alarm thresholds You can select the threshold programming mode by a long press on the ALARM key The ALARM symbol is displayed and the value of the threshold corresponding to the switch position is indicated on the digital threshold display If no value was programmed previously the display indicates a default threshold W On the 6531 0 050 Mw for the Mw 50 V position 0 100 Mw for the Mw 100 V position 10 00 kw for the 40 kw position W On the 6533 0 05 Mw for the Mw 50 V position 0 10 Mw for the Mw 100 V position 0 25 Mw for the Mw 250 V position 0 50 Mw for the Mw 500 V position 10 00 kw for the 400 kw position At this moment it is possible to program the threshold using the see 2 3 3 and A keys see 2 3 4 During this programming if you change the switch position you l
18. n programming the alarm thresholds the key can be used to scroll through all the possible values of the flashing elements and then loop back to the beginning W Mw or Gw for insulation kw or w for resistance for the measurement units 1 2 _ for the thousands digit 0 1 2 3 4 5 6 7 8 and 9 for the hundreds tens and units or or or for the decimal separator gt or lt for the upper or lower threshold When programming the capacitance per unit length in nF km the key can be used to change the values of the flashing digits to 0 1 2 3 4 5 6 7 8 or 9 2 3 5 gt Key W C A 6531 and C A 6533 When this key is pressed the backlighting of the display comes on It will be turned off automatically one minute later When it is lit you can turn the backlighting off by pressing this key again 6531 When the switch is on 4000 nF a long press on this key enables you to program the unit length value see 4 7 2 3 6 DREL key A long press on this key enables you to memorize a value The measurements that follow will be the positive or negative deviation compared with the value memorized does not function for voltage on the Mw positions 3 MEASUREMENT FUNCTIONS 3 1 Insulation The insulation measurements correspond to the Mw positions of the switch 3 1 1 AC DC voltage measurement As soon as the switch is set to one of the Mw positions the instrume
19. nF position of the switch The measurement is shown on the display accompanied by the nF symbol The length of the telephone line measured is indicated in km on the digital threshold display according to the programmed capacitance per unit length If the leads are set up in a short circuit the instrument indications OL on the digital measurement display and the distance is km If the capacitance measurement is greater than 4000 nF the OL symbol is displayed on the digital measurement display If the distance measurement is greater than 80 km the OL symbol is displayed on the digital measurement display If the leads are not connected the digital measurement display indicates 0 00 and ____ km 3 4 AC DC current 6531 Current measurement corresponds to the 400 mA position of the switch The measurement is shown on the display accompanied by the mA symbol The fuse is checked periodically If the current measurement is greater than 400 mA AC DC the OL symbol is displayed on the digital measurement display If the value of the current is negative the instrument detects that the fuse is not functional only at the end of measurement It is advised therefore to swap over the leads so as to always have a positive current measurement 3 5 AC voltage C A 6531 AC voltage measurement corresponds to the V position of the switch The measurement is shown on the display accompanied by the V AC symbol In this function t
20. ns 7 1 4 Storage If the instrument is not used for a long period more than two months remove the batteries and store them separately 7 1 5 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 7 2 Maintenance Repairs under or out of guarantee please return the product to your distributor 8 WARRANTY Our guarantee is applicable for 3 years for C A 6431 and C A 6433 after the date on which the equipment is made available extract from our General Conditions of Sale available on request 9 ORDER 6531 iaia P01 1408 04 Delivered with a shoulder bag for transport and hands free use of the instrument and its accessories 2 elbowed straight safety leads red black 1 5 m long 1 red crocodile clip 1 black touch prod 2 wire grips red and black 6 LR6 batteries and this 5 language user s manual C A 6533 cot eet oerte roe tees ies P01 1408 05 Delivered with a shoulder bag for transport and hands free use of the instrument and its accessories 2 elbowed straight safety leads red black 1 5 m long 1 x 1 5 m long guarded safety lead triple banana plug black 1 red crocodile clip 1 blue crocodile 1 black touch prod 2 wire grips r
21. nt BI Note the current value displayed see 3 4 Note The user can control the backlighting as required by pressing the key 5 5 voltage measurement 6531 W Start up the instrument by setting the switch to V W Connect the and leads to the measurement points W Note the voltage value displayed see 3 5 Note The user can control the backlighting as required by pressing the key gt lt 6 SPECIFICATIONS The instrument displays a measurement every 400 ms which corresponds to 2 5 measurements per second for the digital display The bargraph is refreshed every 100 ms The digital measurement is smoothed while the bargraph always indicates the instantaneous measurement 6 1 Reference conditions Influence quantities Reference conditions Temperature 23 C 3K Relative humidity 45 to 55 RH Supply voltage 8V 0 2V DC or 45 to 65 Hz DC or 45 to 65 Hz Frequency of measured voltage Frequency of measured current Capacity in parallel on resistance nil Electrical field nil Magnetic field 40 A m 6 2 Characteristics per function 6 2 1 Voltage Measurement range 0 to 600 V AC DC Frequency DC and 15 400 Hz Automatic calibres 0 0 399 9 V AC DC 400 599 V AC DC Resolution 0 1 V 1V Accuracy 3 R 2 ct 3 R 1 ct Input impedance 4 Mw C A 6531 300 kw C A 6533 6 2 2 Insulation Measurement range
22. nt measures the voltage between its and terminals The value of this voltage is displayed 0 to 600 V AC DC max If the voltage present is less than 25 V the insulation can be tested but the lower the test voltage the greater the possibility of error If the voltage is greater than 25V gt 25 V is displayed Pressing the yellow key does not trigger insulation measurement but causes a series of buzzes buzz buzz buzz and makes the symbol flash until the yellow key is released These warnings only end if the voltage falls below 25 V disconnection of the leads or removal of the voltage or if the yellow key is released or naturally if you turn off the instrument by returning the switch to the OFF position The instrument indicates if the value measured is outside its measurement range Above 600 V the digital display indicates OL 3 1 2 Insulation Measurement If there is not a dangerous voltage see 3 1 1 the user can then measure the insulation by pressing the yellow key The high voltage is then generated between the terminals marked and The value of the measurement is shown on the logarithmic scale of the bargraph and on the digital display with the corresponding Mw or Gw symbol As soon as the yellow key is released the instrument returns to voltage measurement mode If the voltage generated may be dangerous the A symbol is displayed The instrument indicates if the value measured is outsid
23. ording to the measurement current Voltage at 7V Uopen 9 V open circuit 6 2 4 Capacitance C A 6531 Measurement range 0 to 4000 nF Calibre 0 00 399 9 nF 400 3999 nF Resolution 0 1 nF 1nF Accuracy 2 R 1 ct Measurement 55 ou 550 pA current according to the measurement 6 2 5 Distance 6531 Measurement range 0 to 80 km Calibre 0 000 3 999km 4 00 39 99 km 40 0 80 0 km Resolution 1m 10m 100m Accuracy 2 R 2ct 2 R 1 ct 6 2 6 AC DC current C A 6531 m Measurement range 0 to 399 9 mA AC DC m Frequency DC and 15 400 Hz m Resolution 0 1 mA m 3 2 m Internal impedance 1 w 6 2 7 voltage 6531 m Measurement range 0 to 399 9 V AC 6 3 Power supply Frequency 10 Hz to 1 MHz Resolution 0 1 V AC Accuracy 3 ct Internal impedance 4 Mw The instruments are powered by 6 x 1 5 V alkaline batteries type LR6 Average Average Mossuremtn consumption charge life Voltmeter C A 6531 6533 57 600 Ammeter C A 6531 25 5 seconds measurements Resistance C A 6531 6533 Capacitance meter 6531 50 mA 28 000 5 seconds measurements Isulation C A 6531 6533 Mw 50 V R 2 50 kw 90 mA 15 000 5 seconds measurements Mw 100 V R 100 kw 120 10 800 5 seconds measurements Isulation C A 6533 Mw 50V 140 mA 8 800 5 seconds measurements Mw 100 V 150 mA 8 000 5 seconds meas
24. ose what you have just done You can quit the programming mode and record the threshold by another long press on the ALARM key If the programmed threshold is too high it is corrected when it is stored in the memory the maximum value is entered For example a 2 Gw insulation threshold will be stored in the memory as 399 9 Mw on the C A 6531 while for resistance measurement 700 kw will become 399 9 kw on the C A 6533 If the threshold has been wrongly programmed it is corrected when it is stored in the memory For example 002 Mw will become 2 00 Mw 4 5 2 Activation deactivation of the alarm thresholds The threshold corresponding to the switch position can be activated by a short press on the ALARM key The ALARM symbol the lt or gt symbol the programmed value of the threshold and the corresponding unit are then displayed on the digital threshold display The threshold can be deactivated by a second short press on the key The ALARM symbol the lt or gt symbol the programmed value of the threshold and the corresponding unit disappear If the DREL function is on and you activate a threshold it will apply to the absolute value of the value displayed 4 5 3 Triggering of the alarm Examples in insulation measurement if an upper threshold of 100 Mw is active the display indicates ALARM gt 100 0 Mw If the measurement exceeds this value a continuous beep will be triggered and the whole digital threshold
25. struments in 10 appendix at the end of this users manual 2 1 1 C A 6531 D 3 safety terminals 4 mm marked mA Next to the terminal there are two additional contacts for connecting the remote control probe 3 point connector 7 position switch OFF Mw 50 V Mw 100 V 40 kw 4000 nF 400 mA 400 V Keys Yellow to activate insulation measurement ALARM A P gt and DREL Backlit liquid crystal display amp Battery compartment stand not shown in the drawing 2 1 2 6533 D 2 x 4 mm safety terminals labelled and a 3 point jack for the guarded lead or the remote control probe labelled 6 position switch OFF Mw 50 V Mw 100 V Mw 250 V Mw 500 V 400 kw Keys yellow to activate insulation measurement ALARM A P gt and DREL Backlit liquid crystal display amp Battery compartment stand not shown in the drawing 2 2 Display 2 2 1 Symbols ALARM Threshold active or threshold programming in progress gt Upper threshold lt Lower threshold A Dangerous voltage generated only comes on if test at 50 V See the user s manual 25V Voltage gt 25 V present on the instrument s terminals DREL Difference between actual measurement and measurement in memory does not function for voltage on the Mw positions 2 Buzzer active Constant operation no automatic shutdown Batteries flat 2 2
26. up the machine set the rotary switch to the type of measurement to be performed and then connect the instrument to the installation to be tested The unit is displayed and the calibre is selected automatically for the best reading The instrument can be shut down manually by setting the switch to OFF Otherwise the instrument will be shut down automatically after 5 minutes without any sign of the presence of a user see 4 2 5 1 AC DC voltage and insulation measurement see 10 2 Examples of applications Start up the instrument by setting the switch to the Mw position which will provide the required voltage W Connect the lead from the terminal to the cold point and the lead of the terminal or the remote control probe to the hot point Wi The instrument first measures the AC DC voltage present between its terminals see 3 1 1 If there is no voltage gt 25 V W Press the yellow key keeping it pressed down until the measurement is displayed The yellow key on the remote control probe acts in exactly the same way as the yellow key on the instrument see 3 1 2 To measure high insulation values 1 Gw you are advised to use the guard terminal to remove the influence of superficial leak currents and hand capacitance see 10 2 2 In this case it is preferable to use crocodile clips or wire grips rather than touch prods held in the hand E Note the value displayed W When measurement
27. urements Mw 250V 130 mA 9 800 5 seconds measurements Mw 500 V 190 mA 5 600 5 seconds measurements Add approximately 45 mA when the backlighting is on 6 4 Climatic conditions Storage without battery Use EE Reference Humidity in of HR non condensing atmosphere Temperature in 6 5 Variations in nominal field of use Operating Measurement Influence range quantities lati variations Typical Maximum Temperature 1010 55 C TX RE G9 R 2 aD 1076 Relative humidity 20 to 80 HR 2 R 2 ct 3 R 2ct Supply voltage 710 10V 196 1 ct V 2 R 2 ct V Frequency DC and inV and in mA 15 400 Hz 1 R 1 ct 296 R 2 ct Capacity 0105 uF at i en parallel nominal current Negligible 1 1 ct on the resistance 6 6 Limits The instrument is protected across all ranges against a constantly applied voltage between any two terminals of 600 V AC DC on the C A 6531 and 720 V AC DC on the C A 6533 The C A 6531 is protected for 10 s against an accidental overvoltage of 720 V across all the ranges The current input on the C A 6531 accepts 0 63 A beyond which it is protected by fuse 6 7 Construction specifications m Overall dimensions of the unit L x x h 211 x 108 x 60 mm m Dimensions of the display 73 mm x 54 3 mm m Weight approx 8
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