Chauvin Arnoux CA6543 1kV Megohmmeter with Memory Storage

  • High performance 50V to 1kV tester which has a large range up to 4T Ohms and continuity at 200mA
  • The CA6543 has an internal memory storage for up to 1500 test results that can be classified by object and test
  • Automatically samples and memorises the insulation values at a rate specified by the user during the test
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Chauvin Arnoux CA6543 1kV Megohmmeter - Digital Insulation Tester

The C.A.6543 Megohmmeter is a high-performance 50V to 1kV digital insulation tester that supports the most demanding site conditions and is ideal for qualitative insulation analysis. The Chauvin Arnoux CA 6543 megohmmeter is a micro-processor-controlled unit that is equipped with highly advanced functions for measurement of insulation up to 4TΩ, AC/DC voltage, continuity at 200mA, resistance and capacitance. In addition the CA6543 megohmmeter has an internal memory storage for up to 1500 test results that can be classified by object and test (OBJ and TEST) for systematic storage. This insulation tester is also compatible with an optional printer for on-site production of result data and the CA 6543 can be used in conjunction with PC software to plot graphs, create spreadsheets and to set up complete control of the instrument via the RS232.

The 6543 mega ohmmeter can automatically calculate the polarisation index (PI) and dielectric absorption ratio (DAR) which can be used to qualify the quality and ageing of insulation. The CA 6543 employs time-controlled testing to give a better understanding of the quality of the insulation. When a programmable time-controlled test has begun, the CA6543 automatically samples and memorises the insualtion values at a rate specified by the user. A smooth function is also available for when the measurement values are unstable. For every measurement function, a high or low alarm threshold can be stored which will be triggered when exceeded.

Chauvin Arnoux CA6543 1kV Megohmmeter Features:

  • Insulation up to 4 Tera Ohms at up to 1,000V DC
  • Automatic calculation of insulation quality ratios: DAR and PI
  • Programmable test period and plotting of R(t) curve (auto memorisation of 20 samples)
  • Automatic indication of voltage before and after measurement: 1 to 1000V AC/DC
  • Resistance from 0.01Ω to 400kΩ
  • Continuity range 0.01Ω to +40Ω (audible beep and lead compensation)
  • Automatic measurement capacity after each insulation measurement: 0.005 to 4.999 µF
  • Microprocessor-controlled
  • Large backlit LCD screen with bargraph
  • SMOOTH function
  • Insulation test voltages can be locked
  • Programmable alarms
  • Long battery life up to 21,000 insulation tests of 5s each
  • Hard, watertight case with rating of IP54

What's In The Box?

  • C.A. 6543 Megohmmeter/ insulation tester
  • 2 x 1.5m test leads
  • 1.5m black guarded lead
  • 3 x crocodile clips
  • Test probe
  • Simplified operating manual
  • Operating manual
  • 2m mains power cable
  • Communication cable
  • Accessories bag


  • 50V range: 2kΩ - 200GΩ
  • 100V range: 4kΩ - 400GΩ
  • 250V range: 10kΩ - 1TΩ
  • 500V range: 20kΩ - 2TΩ
  • 1000V range: 40kΩ - 4TΩ
  • Accuracy: ±5% ±3 counts (2kΩ - 400GΩ), ±5% ±10 counts (400GΩ - 4TΩ)
  • Programmable test duration: 1 - 59 minutes
  • DAR (1min/30sec): 0.000 - 9.999
  • PI (10min/1min): 0.000 - 9.999
  • Customisable PI: 30s - 59min as required
  • Voltage test/Safety: 0 - 1000V AC/DC
  • Voltage alert: >25V
  • Test inhibition: >25V
  • Smooth function: Yes


  • Range: 0.01 - 39.99Ω
  • Current: >200mA - 20Ω


  • Range: 0.01 - 400kΩ


  • Range: 0.005 - 4.999µF
  • Memory Storage: 128 kbyte memory ( 1500 test results)
  • Direct report printing: On local printer - fixed format
  • Communication port: RS232
  • Display: Giant LCD & bargraph
  • Power supply: NiMH rechargeable battery
  • Compliance: IEC 61010 CAT III 600V, IEC 61557
  • Dimensions: 270 x 250 x 110mm
  • Weight: 3.4kg

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