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 C177A is a specialised accessory for the installation testers C.A 6116N and C.A 6117 by Chauvin Arnoux, extending the measurement functions of these devices. It enables precise current measurements in the range of 5.0 mA to 199.9 A and is thus suitable for a wide range of applications in electrical installation and testing. The clamp features a jaw opening diameter of 52 mm, allowing flexible handling on various conductors and cables. Additionally, it supports power measurement up to 110 kW in single-phase and up to 330 kW in three-phase systems, as well as harmonics measurement up to the 50th order. These functions make it a valuable tool for electricians and testing experts who need to perform comprehensive analyses of electrical systems.

Applications

The clamp is designed for professional use in electrical installation, particularly in industrial, commercial, and residential buildings. It is used to inspect new installations, check existing installations after extensions or repairs, and perform regular inspections. The ability to measure harmonics and power makes it especially useful for diagnosing power quality issues and evaluating electrical loads in complex systems.

Functions and Equipment in Detail

The current clamp C177A extends the functionality of the installation testers by adding current, power, and harmonics measurement. Current measurement is performed in the range of 5.0 mA to 199.9 A, with accuracy and stability of the readings ensured even in disturbed environments. Power measurement reaches up to 110 kW in single-phase and up to 330 kW in three-phase systems, enabling analysis of loads in larger installations. Harmonics measurement up to the 50th order supports assessment of power quality and identification of disturbance sources. Additionally, the clamp enables selective earth resistance measurement, which is important when testing protective measures in electrical installations.

Technology Explained Simply

The clamp uses the principles of inductive current measurement, where the magnetic flux through the conductor enclosed by the clamp is measured. This allows contactless current measurement without interrupting the circuit. The measured values are transmitted to the main device, where they are processed and displayed together with other measurement data. The high accuracy and wide measurement range ensure that the clamp delivers reliable results even in demanding environments. The use of a jaw opening diameter of 52 mm ensures flexible application on various cable diameters.

Compatibility and Accessories

The clamp is specifically designed for the installation testers C.A 6116N and C.A 6117 and can be directly connected to these devices. It extends their functionality with the above-mentioned measurement capabilities. These accessories support the versatile use of the clamp in various testing scenarios.

Mounting and Installation

Mounting of the clamp is done by simply connecting it to the corresponding sockets on the installation tester. The connection is mechanically stable and electrically secure to ensure reliable data transmission. The clamp is closed around the conductor to be measured, with the jaw opening diameter of 52 mm allowing adaptation to various cable diameters. Operation is performed via the main device, with the clamp transmitting the measured values directly to the display.

Advantages in Operation

The current clamp C177A offers high measurement accuracy and a wide measurement range, making it suitable for diverse applications. Contactless current measurement enables quick and safe testing without interrupting the circuit. Integration with the installation testers C.A 6116N and C.A 6117 allows comprehensive analysis of the electrical system using a single device. The robust construction and easy handling ensure reliable use even in demanding environments. Support for selective earth resistance measurement and harmonics measurement extends functionality and enables detailed diagnosis of electrical systems.