Eigenschaften
Range	4 kΩ / 40 kΩ - 400 kΩ
Test voltage	50 /100 / 250 / 500 / 1000 V DC
Dimensions / weight	280 x 190 x 128 mm / 2,2 kg

The current clamp C177 is a specially developed accessory for the installation testers C.A 6113 and C.A 6116 from Chauvin Arnoux. It extends the functionality of these devices by enabling current measurements in the range of 5.0 mA to 19.99 A, as well as selective earthing measurements under operational conditions. The clamp is designed for use in professional electrical installations where precise and reliable measurements are required, particularly when testing protective conductors and evaluating earthing characteristics in existing systems.

Applications

The clamp is primarily used in the field of electrical installation and testing, especially for inspecting electrical systems in accordance with international standards such as IEC 61557. It is suitable for all network systems, including TT, TN, and IT, and supports testing of residual current devices (RCDs) as well as loop impedance measurements. The application is mainly in residential, commercial, and industrial facilities where the safety of electrical installations must be ensured.

Functions and Equipment in Detail

The clamp enables alternating current measurements in the range of 5.0 mA to 19.99 A. It is defined by a jaw opening diameter of 52 mm, allowing flexible use with various conductors and cables. The integrated function of selective earthing measurement under operational conditions allows determination of earthing resistance under real operating conditions, with the measurement current passed through the clamp. This function is particularly useful when earthing in an existing network must be tested under voltage without having to switch off the installation.

Technology Explained Simply

The clamp operates on the principle of magnetic induction, where the flowing current in a conductor generates a magnetic field that is detected by the clamp and converted into an electrical signal. This signal is transmitted to the main device (C.A 6113 or C.A 6116), where it is processed and displayed on the screen. The measurement accuracy is ±(1.5% of reading + 2 digits) for current measurements, which is sufficient for professional applications. The clamp is designed for use with the specified installation testers and connects to the device via a special interface.

Compatibility and Accessories

The clamp is exclusively compatible with the installation testers C.A 6113 and C.A 6116. It is used as an addition to these devices to extend their measurement functions. Additional accessories that can be used with the testers include, among others, test probes, crocodile clips, earthing sets, and a mains/charger unit. The clamp itself is delivered without additional components, but it is part of a comprehensive system designed for professional electrical testing.

Mounting and Installation

The clamp is mounted by simply placing it around the conductor to be measured, with the jaw opening diameter of 52 mm allowing adaptation to various cable cross-sections. Connection to the main device is made via a special cable or interface that connects directly to the device. Operation is performed via the main device, with the clamp functioning as an external measuring instrument.

Advantages in Operation

Using the clamp allows current and earthing measurements to be performed without additional devices, increasing the efficiency of inspections. The selective earthing measurement under operational conditions reduces the need to switch off the installation, saving time and effort. The robust construction and large jaw opening diameter make the clamp a reliable tool for professional use in electrical installations. Integration with the installation testers C.A 6113 and C.A 6116 ensures consistent and precise measurements that meet standard requirements.