General
Adapter	5

The accessory set for grounding measurement from Chauvin Arnoux is designed for use with resistance and grounding measurement devices that support the 1-wire-, 3-wire- or 4-wire-measurement method. It is intended for precise measurement of grounding resistances and specific earth resistances, and is designed for professional applications in the fields of electrical engineering and safety technology. The set includes, depending on the variant, 1, 2 or 4 ground rods, which are used to be inserted into the ground to establish a reliable earth contact. The cables are available in various lengths – 50 m, 100 m or 166 m – and are wound on reels, with colour coding (red, blue, black, green) enabling easy identification of individual conductors. The cables are suitable for outdoor use and are made of robust materials that withstand the demands of professional operation.

Applications
This accessory set is used in electrical installations, for testing protective and functional earthing, and for measuring specific earth resistance. It is particularly suitable for inspecting grounding systems in buildings, industrial plants, power supply networks, or during commissioning of electrical systems. The use of the 4-wire method enables high measurement accuracy, as the contact resistances of the measurement leads do not affect the measurement. The combination of ground rods, cables and adapters allows flexible adaptation to different measurement tasks and site conditions.

Functions and equipment in detail
The set includes, in addition to the ground rods and cables, a hammer for inserting the ground rods into the ground, as well as 5 adapters with fork terminals and banana plugs, ensuring a secure and conductive connection to the measuring device. The adapters are designed for use with standard measuring instruments. Additionally, a transport bag is included, which safely and compactly transports and stores the entire accessory set. The bag is robust and protects the sensitive cables and adapters from damage. The colour-coded design of the cables facilitates the assignment of individual conductors during measurement, reducing potential sources of error.

Technology explained simply
Measurement is carried out using the 1-, 3- or 4-wire method, with the 4-wire method providing the highest accuracy as it excludes the contact resistances of the measurement leads from the measurement. The ground rods serve as reference points in the ground, to which the measurement leads are connected. The length of the cables (50 m, 100 m, 166 m) determines the maximum distance between the measuring device and the ground rod, enabling measurements over greater distances. The use of multiple ground rods allows adaptation to different measurement geometries, such as when measuring grounding resistance in complex installations or determining specific earth resistance.

Compatibility and accessories
The accessory set is compatible with resistance and grounding measurement devices that support the 1-, 3- or 4-wire method. It can be supplemented by a special accessory set for soil resistance measurement (100 m), which includes 2 reels and 2 ground rods, enabling measurement of specific earth resistance. A separate continuity test set is also available and includes 4 test leads with 4 mm banana plugs, 4 crocodile clips and 2 test probes, which can be used for continuity testing of electrical systems.

Installation and mounting
Installation is carried out by inserting the ground rods into the ground using the included hammer. The cables are connected to the ground rods and the measuring device, with the colour-coded marking facilitating assignment. The adapters ensure a secure electrical connection. The transport bag facilitates transport and storage of the entire set, protecting the components from dirt and damage.

Advantages in operation
The accessory set offers high measurement accuracy through the use of the 4-wire method and the robust design of the components. The colour-coded cable design reduces errors during wiring. The transport bag ensures safe transport and orderly storage. The combinability with additional accessory sets expands the range of applications and enables flexible adaptation to different measurement tasks.