General
Cable lengths	50 m, 100 m, 166 m m

This accessory set for grounding and earth resistance measurement from Chauvin Arnoux is designed for professional use in electrical engineering. It is intended for precise measurement of earth resistance and specific earth resistivity, and is compatible with measuring instruments supporting the 1-, 3-, or 4-wire method. The set provides complete equipment for various measurement tasks, with the exact composition varying depending on the variant. It includes 1, 2, or 4 earth electrodes for insertion into the ground, as well as 3 or 4 reels of coloured cables in lengths of 50 m, 100 m, or 166 m. The coloured marking of the cables facilitates assignment and identification during measurement. The set is also supplemented by a hammer for inserting the electrodes, 5 adapters with fork terminals and banana plugs, 4 test leads with 4-mm banana plugs, 4 crocodile clips, and 2 test probes. A practical transport bag ensures convenient transport and secure storage of all components.

Applications
This accessory set is primarily used in the field of electrical installation and safety testing, especially for inspecting grounding systems. It is suitable for measurements on existing grounding systems, during installation of new systems, or for testing electrical safety in buildings, industrial facilities, or outdoor environments. The use of 1-, 3-, or 4-wire measurement methods allows flexible adaptation to different requirements, such as measuring under voltage or determining specific soil resistivity. The robust construction of the set makes it suitable for outdoor use and harsh conditions.

Functions and Equipment in Detail
The set is modular in design to cover various measurement tasks. The earth electrodes serve as contact points to the ground and are designed for insertion using the included hammer. The coloured cables in various lengths allow adaptation to the respective measurement geometry and distance between measurement points. The adapters with fork terminals and banana plugs ensure a secure and reliable connection between the cables and the measuring instruments. The test leads with 4-mm banana plugs are intended for continuity testing, while the crocodile clips and test probes are used for direct contact with conductors or metallic components. The transport bag provides a protected space for all components and facilitates transport to different measurement sites.

Technology Explained Simply
Earth resistance measurement is performed using the 1-, 3-, or 4-wire method, where the number of wires affects the accuracy and measurement setup. The 1-wire method is often used for measurements under voltage, while the 3- and 4-wire methods are used for more precise measurements in open ground or complex grounding systems. The coloured marking of the cables helps avoid wiring errors and simplifies the assignment of individual wires during measurement. The cable lengths (50 m, 100 m, 166 m) allow adaptation to different measurement distances, which is particularly important for determining specific earth resistivity. The use of banana plugs and fork terminals ensures a mechanically stable and electrically reliable connection.

Compatibility and Accessories
The accessory set is designed for resistance and earth measuring instruments supporting the 1-, 3-, or 4-wire method. It can be supplemented by an earth resistivity measurement set with 2 reels and 2 electrodes if specific requirements for measuring specific soil resistivity exist. Combination with suitable measuring instruments enables comprehensive analysis of the grounding system. The components are designed to be compatible with standard connectors, particularly 4-mm banana plugs, which are widely used in measurement technology.

Installation and Mounting
Installation is carried out by inserting the electrodes into the ground, using the included hammer. The cables are connected to the electrodes and to the measuring instruments, with the coloured marking facilitating assignment. The adapters ensure a secure connection between the cables and the measuring instruments. The test leads with banana plugs and the crocodile clips are connected to the respective points depending on the measurement task. The transport bag facilitates transport and storage of the components.

Operational Advantages
The set offers a complete, portable, and robust solution for grounding and earth resistance measurements. The modular equipment allows adaptation to various measurement tasks, and the coloured marking of the cables reduces wiring errors. The included transport bag protects the components and facilitates transport. The use of standard connectors such as 4-mm banana plugs ensures high compatibility with common measuring instruments. The robust construction makes the set suitable for outdoor use and harsh conditions.