General
Test current automatic	50 A, 100 A, 150 A, 200 A

The Chauvin Arnoux C.A 6292 is a Micro-Ohmmeter for precise measurement of very small electrical resistances. It is designed for use in industrial environments such as construction sites, workshops or laboratories and features a robust, construction-site suitable housing. Operation is via a rotary knob or a PC interface, with measurement results displayed on an illuminated LCD display. The device enables resistance measurements starting at approximately 0.1 µΩ with a maximum resolution of 0.1 µΩ, making it suitable for high-precision applications. Accuracy is approximately 1 % of the measured value.

Applications

The C.A 6292 is used for testing contact resistances in high-voltage substations, disconnecting devices, switches and relays. It is also suitable for measurements on current bars, windings, surface inspections, as well as for checking weld seams and continuity tests. Measurements are performed using a test current that can be set between 20 A and 200 A. Automatic adjustment occurs in steps of 50 A, 100 A, 150 A and 200 A, making the device suitable for a wide range of applications.

Functions and Equipment in Detail

The device operates using the four-wire measurement method, in which lead and connection resistances do not affect the measurement, thereby increasing accuracy. Measurement values can be stored in an integrated memory, which provides space for up to 8000 measurements. Data can be evaluated, analysed and presented in reports using the DataView software. The software also allows device configuration and export of stored measurement files.

Technology Explained Simply

Measuring very small resistances requires high stability and precision. The C.A 6292 achieves this through the combination of four-wire measurement and a stable test current. The protection rating IP53 protects the device against dust and splashing water, making it suitable for outdoor use or in damp environments. The category 50 V CAT III indicates the safety class of the device for measurements in electrical installations. The illuminated LCD display ensures clear readability even in poor lighting conditions.

Compatibility and Accessories

Optionally, the device can be combined with a clamp current transformer MR 6292, enabling measurements using the BSG method (bilateral grounding). This method prevents electromagnetic induction and increases safety when measuring currents up to 50 A. Additionally, Kelvin test probes are available, which further optimise the four-wire measurement and increase accuracy.

Mounting and Installation

The device is connected directly to the components to be tested. Connections are clearly marked to avoid connection errors. Operation is via the rotary knob or a PC interface, enabling flexible use. Dimensions are 270 x 250 x 180 mm, weight is 4 kg, enabling convenient handling.

Advantages in Operation

The high accuracy and resolution of the C.A 6292 enable reliable measurements even at minimal resistances. The integrated memory function and software support simplify documentation and evaluation of results. The combination of robust housing, IP53 protection rating and CAT III category makes the device suitable for use in demanding environments. Options such as clamp current transformer and Kelvin test probes extend functionality and safety for specific applications.