Eigenschaften
Dimensions / weight	272 x 250 x 128 mm / 3,2 kg

The earthing and earth resistance tester from Chauvin Arnoux is a multifunctional measuring instrument for comprehensive testing of earthing systems. It enables the measurement of earth resistance, specific soil resistance, earth coupling, and earth potentials. The device is designed for use in various applications, including testing earthing at high-voltage poles in combination with the optional Pylon Box C.A 6474. Measurements are performed with high accuracy and can be carried out under challenging conditions, such as interference voltages up to 60 V peak or auxiliary earth resistances up to 100 kΩ.

Applications

The device is suitable for testing all types of earthing systems, including high-voltage networks, industrial plants, and buildings. Particularly noteworthy is its ability to perform earthing measurements on line poles, making it indispensable for the maintenance and servicing of high-voltage networks. The measurement of specific soil resistance is carried out using the Wenner or Schlumberger method, where the device programs the measurement distances and automatically calculates and displays the results in Ω-meters. The measurement of earth coupling and earth potential extends the functionality for detailed analyses.

Functions and Equipment in Detail

The device offers a variety of measurement methods: three-pole earth measurement with auxiliary earth and probe, four-pole measurement, and selective measurement using clamp current transformers. When multiple parallel earthing circuits are present, each circuit can be measured individually without affecting the others. This enables precise and efficient analysis. The measurement of earth loops using two clamps allows the earth resistance of each individual loop to be determined, with a signal of 32 V and 1367 Hz being injected. Continuity testing and earth resistance measurement are also integrated.

Technology Explained Simply

The measurement frequency can be selected automatically or manually within the range of 41 Hz to 5078 Hz. The use of a higher frequency signal enables detailed analysis of the behavior of earthing loops, especially in the case of lightning strikes. The test voltage is selectable and includes 10 V, 16 V, 32 V RMS, or 60 V. The test current reaches up to 250 mA. Measurement accuracy is ± 2 % of the value ± 1 pt, with accuracy at 128 Hz being ± 2 % L +1 pt. The measurement ranges extend from 0.01 Ω to 99.9 kΩ, with resolution varying from 0.01 Ω to 100 Ω. Measurements are performed using either 2P or 4P method, selectable according to requirements.

Compatibility and Accessories

The device is compatible with various accessories, including the accessory set for earthing and earth resistance measurement with 4 earth electrodes (100 m or 150 m), the optical USB cable, the Li-Ion battery charging station, the clamp current transformer C182, the probe for continuity testing, the adapter for battery charging via cigarette lighter, and the DataView software. Communication occurs via USB with optical isolation, ensuring secure data transfer. The PC Ground Tester Transfer software enables processing of stored measurement data.

Installation and Mounting

Installation is carried out by simply connecting the measurement leads to the corresponding sockets. The socket assignments are automatically recognized, with blinking symbols indicating incorrect or missing connections. The device offers two operating modes: the automatic mode, where optimal measurements can be performed with minimal effort, and the expert mode, where the user can define all measurement parameters themselves, including frequency sweep mode.

Operational Advantages

The device combines all functionalities for earthing measurements in a single unit, enabling quick and comprehensive testing. Storage of up to 512 measurement results allows for subsequent evaluation. Power supply is provided by a rechargeable battery, which can be charged via an external charger (18 Vdc / 1.9 A) or vehicle power supply (12 Vdc). The protection rating IP53 protects the device against dust and splashing water, making it suitable for outdoor use. Electrical safety complies with the standard 50 V CAT IV, enabling safe measurements even in hazardous areas. Dimensions are 272 x 250 x 128 mm, and the weight is 3.2 kg.