Chauvin Arnoux CA 6524 insulation tester content_copy

The Chauvin Arnoux CA 6524 is a digital insulation and continuity tester for industrial maintenance, enabling insulation resistance measurements up to 200 GΩ. The device is designed for test voltages of 50 V, 100 V, 250 V, 500 V, and 1000 V and complies with IEC 61557-2, which requires a measurement range of at least 2 GΩ. Measurement is performed in multiple ranges: from 50 V to 1000 V, with the measurement range varying between 10 kΩ and 200 GΩ depending on the test voltage. The accuracy of insulation measurement is ± (3 % + 2 pts), with an input impedance of 400 kΩ. The test voltage can be selected in five fixed steps, with a maximum test voltage of 1000 V. Measurement is carried out in the DC range and in the frequency range from 15.3 Hz to 800 Hz, with frequency measurement resolution of 0.1 Hz (up to 399.9 Hz) and 1 Hz (from 400 Hz), achieving accuracy of ± (1 % + 2 pts) or ± (1 % + 1 pt).

Applications include preventive maintenance of industrial installations, where checking insulation quality is necessary to avoid malfunctions and accidents. The device is suitable for diagnosing insulation conditions in electrical installations, motors, transformers, and other equipment. The functions for calculating DAR (Dielectric Absorption Ratio) and PI (Polarization Index) allow detailed assessment of insulation quality, with measurements taken over a period of 10 minutes (for PI) or 1 minute (for DAR). Measurement can be performed in four operating modes: manual, locked, with timer, or as PI/DAR determination. The timer function allows measurements with a predefined duration from 0:00 to 39:59 minutes.

Functions and equipment in detail include a standard-compliant continuity test with test currents of 200 mA or 20 mA, performed according to IEC 61557. The continuity test features an active protection circuit that detects existing voltages and disables the function, eliminating the need for fuses. Continuity measurement is performed in the range of 0.00 Ω to 10.00 Ω at 200 mA and 0.0 Ω to 100.0 Ω at 20 mA, with accuracy of ± (2 % + 2 pts). The open-circuit voltage is ≥ 6 V. Line compensation allows compensation of test lead resistance up to 9.99 Ω to improve measurement accuracy. The display consists of an illuminated dual digital display with a logarithmic bar graph, showing the measured value, actual test voltage, test current, and timer.

Technology explained simply shows that the device functions as a multimeter, supporting voltage measurements up to 700 V (TRMS and DC), resistance measurements up to 1000 kΩ, and frequency measurements up to 800 Hz. Voltage measurement is performed in two ranges: 0.3 V to 399.9 V with resolution of 0.1 V and 400 V to 700 V with resolution of 1 V. Voltage measurement accuracy is ± (3 % + 2 pts). Test current measurement is performed in the ranges of 0.01 µA to 39.99 µA (resolution 10 nA), 40.0 µA to 399.9 µA (resolution 100 nA), and 0.400 mA to 2.000 mA (resolution 1 µA), with accuracy of ± (10 % + 3 pts). Test voltage display accuracy is ± (3 % + 3 pts). Discharge time at 25 V is less than 2 seconds per microfarad.

Compatibility and accessories include the use of accessories such as a continuity test probe, a remote control probe (with integrated light), test leads with 4 mm connectors (1.5 m, 15 A, CAT IV, 1000 V, silicone, red + black), crocodile clips (CAT IV-1000 V, 15 A, red + black), test tips with 4 mm socket (CAT IV and CAT III, 1000 V, PVC, red and black), and a carrying case. The remote control probe enables measurement in dark environments, as it has an integrated light that illuminates the measurement point. The magnetic folding stand allows the device to be attached to steel surfaces, freeing both hands for measurement.

Mounting and installation require no special mounting, as the device is portable and features a magnetic folding stand that allows attachment to metallic surfaces. Operation is via a TEST button, which can also be operated with insulated protective gloves. The display is illuminated, enabling measurements even in poorly lit environments.

Operational advantages include high measurement accuracy, versatility of operating modes, integrated multimeter function, and the ability to store and compare measurement values. The device features internal memory for 300 measurements, with the ΔREL function displaying deviation from a stored reference value. The alarm function provides two fixed threshold values and one programmable threshold value to visually signal measurement results. Power supply is via six LR6 batteries (AA), with autonomy of 1,500 insulation measurements (5 s ON / 55 s OFF) and 3,000 continuity measurements (5 s ON / 55 s OFF). Automatic shutdown occurs after 5 minutes, but can be disabled. The device complies with protection class IP54 (dust- and splash-proof) and mechanical protection class IK04, with the housing meeting measurement category 600 V CAT IV. Compliance with standards IEC 61557-1, -2, -4, and -10 is ensured. EMC compliance is according to IEC 61326-1, and electrical safety according to IEC 61010-1 and IEC 61010-2-030.

Dimensions and weight are 211 x 108 x 60 mm and 850 g, making the device compact and easy to handle. The robust construction and ergonomic design ensure high user comfort. The display is large and illuminated, ensuring readability even in poor lighting conditions. The remote control probe with integrated light supports work in dark environments. The combination of insulation testing, continuity testing, and multimeter functions makes the device a versatile tool for industrial maintenance.

Batteries are not included in the delivery scope.

Eigenschaften
Test voltage	50 - 100 - 250 - 500 - 1.000 V
Range at maximum test voltage	200 GΩ
Measurement range: 50 V	10 kΩ - 10 GΩ
100 V	20 kΩ - 20 GΩ
250 V	50 kΩ - 50 GΩ
500 V	100 kΩ - 100 GΩ
1.000 V	200 kΩ - 200 GΩ
Test current / resolution	0,01 µA - 39,99 µA / 10 nA ; 40,0 - 399,9 µA / 100 nA ; 0,400 - 2,000 mA/ 1 µA
Discharge time (at 25 V)	< 2 s/µF
Communication	-
Dimensions / Weight / IP rating	211 x 108 x 60 mm / 850 g / IP 54 / IK 04

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