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CHAUVIN ARNOUX
C.A 6541 C.A 6543

C.A 6541 C.A 6543

Product catalog summary

Overview: The document provides detailed information about the C.A 6541 and C.A 6543 megohmmeters, which are designed for insulation measurement ranging from 50 V to 1 kV. These instruments are equipped with advanced features for professional use, including a large back-lit LCD screen, automatic calculation of insulation quality ratios, and memory storage capabilities.

Specifications: The megohmmeters offer a measurement range from 2 kΩ to 4 TΩ, with accuracy varying by range. They support test voltages of 50 V, 100 V, 250 V, 500 V, and 1000 V. The C.A 6543 model includes additional features such as a rechargeable battery, RS232 interface, and internal memory for data storage.

Features: Key features include a giant back-lit LCD screen, programmable alarms, a smooth function for stabilizing readings, and a remote control probe for ease of use. The instruments also provide automatic voltage and capacitance tests, and the C.A 6543 model supports data transfer and control via PC software.

Insulation Quality Ratios: The document explains the calculation of Polarisation Index (PI) and Dielectric Absorption Ratio (DAR), which are used to assess insulation quality. PI is calculated as R10min/R1min and DAR as R1min/R30s, with specific thresholds indicating insulation quality.

Data Handling: The C.A 6543 model allows for the memorization of thousands of measurements, classified by object and test address. It supports graph plotting of R(t) for time-controlled testing and offers options for printing results on-site.

Safety and Durability: The instruments are built for on-site use, housed in hard cases with IP54 protection rating, and comply with electrical safety standards CEI 61010-1 + A2 - Cat III - 600 V and CEI 61557. They operate in a wide range of climatic conditions and are designed to withstand harsh environments.

Accessories and Ordering: The document lists optional accessories such as a remote control probe, PC software, and a serial printer. It also provides ordering information for the C.A 6541 and C.A 6543 models, including the contents of the carrying bag and optional accessories.

Catalog excerpts

The benchmark for 50 V to 1 kV insulation measurement Giant back-lit LCD screen with digital display + bar graph 2 kΩ…4 TΩ range Automatic calculation of insulation quality ratios (DAR, PI) Graph plotting R(t) Memory / RS232 / rechargeable battery (C.A 6543)

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Instruments built for on-site use! n their compact hard cases, megohmmeters C.A 6541 and C.A 6543 give you the very best in insulation testing technology. These microprocessor-controlled instruments are equipped with highly advanced functions for measurement of insulation (up to 4 TΩ at 50 V to 1000 V), AC/DC voltage, continuity at 200 mA, resistance, capacitance... Model C.A 6543 also comes with a rechargeable battery, memory and an RS232 serial link, enabling you to control the instrument with a PC. This also makes it possible to transfer data from memory for processing via the specially developed...

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Expert insulation analysis at 50 V to 1 kV! POLARISATION INDEX (PI) AND DIELECTRIC ABSORPTION RATIO (DAR) Insulation test results on rotating machines can be rendered inaccurate due to transient eddy currents that interfere with the measurement before they cancel out. To eliminate their influence on the test it is necessary to measure over a long duration. The absolute insulation value, read off at the end of the measurement, and the calculation of PI and DAR coefficients (automatic on the C.A 6541 and 6543) go to make it possible to qualify the quality and ageing of insulation. Insulation quality...

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Test voltages Range Resolution Accuracy Barring of test voltages 50 V 100 V 250 V 500 V 1000 V 2kΩ…200GΩ 4kΩ…400GΩ 10kΩ…1TΩ 20kΩ…2TΩ 40kΩ…4TΩ from 1kΩ to 1GΩ depending on range +/- (5%R + 3 cts) from 2kΩ…40GΩ then +/- (15%R + 10 cts) for each test voltage Range Resolution Accuracy 0.01 Ω…400 kΩ from 0.01 Ω to 100 Ω depending on range +/- (3%R + 3 cts) I CONTINUITY (1) Audible beep Range Resolution Accuracy Measurement current Lead compensation Automatic voltage test Range Resolution Accuracy Automatic capacitance test Range Resolution Accuracy (1) Before each measurement there is an automatic...

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