Eigenschaften
Type	3P & 4P
Frequency	128 Hz
Weight	2,8 kg

The Chauvin Arnoux CA 6460 is a digital earth and earth resistance meter, specifically developed for field use. The device combines three functions in one: it is used for measuring earth, ground, and transition resistances and enables precise diagnostics during the installation or testing of earthing systems. Measurement is performed using the 3-wire or 4-wire method, with switching between the two methods achieved via a non-removable shorting bar between the E and ES terminals. This mechanism ensures flexible adaptation to different measurement tasks without requiring additional tools.

Applications

The device is designed for use in electrical and energy technology, particularly for the installation, maintenance, and testing of earthing systems in industry, energy supply, building technology, and outdoor environments. It is suitable for both testing existing earthing systems and installing new electrodes. The robust construction and compact housing with a folding lid make it suitable for use under harsh conditions, for example, on construction sites or in field applications.

Functions and Equipment in Detail

The CA 6460 features an LCD digital display with 2000 counts, showing large, illuminated digits to ensure clear readability even in poor lighting conditions. The display is designed for displaying measurement values in the range of 0.01 to 2000 Ω, with the measurement range automatically switching between three steps (0.01–20 Ω, 20–200 Ω, 200–2000 Ω). Resolution varies depending on the range: 10 mΩ, 100 mΩ, or 1 Ω, enabling precise resistance measurement. Accuracy is ± (2 % + 1 pt), which is sufficient for professional applications. The measurement frequency of 128 Hz minimizes interference from mains voltage and allows reliable measurement even in electrically noisy environments.

Technology Explained Simply

Measurement is performed by applying an open-circuit voltage of ≤ 42 V peak, which is fed into the earthing system via the device. The resulting current is measured to calculate the resistance. The frequency of 128 Hz ensures that the measurement is not affected by 50/60 Hz mains voltage. Electrical safety is ensured in accordance with IEC 61010 and IEC 61557, enabling use in hazardous electrical environments. The protection rating IP53 protects the device against dust and splashing water, making it suitable for outdoor use. The carrying handle and folding lid enhance handling and device protection.

Compatibility and Accessories

The device is supplied with four large, color-coded terminals that allow easy connection of test leads. Compatible accessories include various spools with test leads in different lengths (e.g. 30 m, 50 m, 100 m, 150 m) and colors (red, blue, green, black), accessory kits for earth and earth resistance measurement with four electrodes each (100 m or 150 m), adapter cable lugs, carrying cases, power cables, and fuses. These components can be purchased separately to configure the measurement setup according to specific requirements.

Installation and Mounting

Installation is performed by connecting the test leads to the color-coded terminals. Measurement is started by pressing the single TEST button. Operation is simple and requires no special preparation. The batteries enable an average operating time of up to 4,500 measurements (each 15 seconds). The display shows three indicator lights that signal errors or invalid measurements, ensuring the reliability of results.

Advantages in Operation

The device is characterized by its robustness, ease of operation, and high reliability. Automatic range selection and the large, illuminated display reduce error sources. Integrated error indicators assist the user in validating measurement results. The use of standard batteries ensures quick readiness for use without additional chargers. The device is therefore ideal for technical personnel who need to perform precise and fast measurements in the field.

Note: Batteries are not included in the delivery scope.