The reel with 150 m test cable in red is a high-quality test accessory for measuring earth resistance and specific earth resistances. The product is manufactured by Chauvin Arnoux and serves as a supplement for earth resistance measuring instruments, particularly in 3-pole or 4-pole measurement configurations. The cable is wound on a reel with a handle, which facilitates transport and handling during use. The red color serves for visual distinction and is commonly used for test cables employed in earth resistance measurements.

Applications
This test accessory is used in electrical engineering and facility management, where testing of earthing systems for safety and functionality is required. This includes, for example, checking protective conductors in buildings, earthing of machines, or specific earth resistances in industrial plants. The cable enables connection between the measuring device and earth stakes or earth points over longer distances.

Functions and Equipment in Detail
The test cable has a length of 150 meters and is wound on a reel with a handle. This design allows for compact storage and easy transport, especially for mobile measurement tasks outdoors. The red color is standard for test cables in earth resistance measurement applications, to distinguish them from other cables.

Technology Explained Simply
The test cable serves as a connecting element between the earth resistance measuring device and the measurement points in the earthing system. When measuring earth resistance, the cable is laid between the device and the earth stakes or electrodes to determine the electrical resistance of the earth connection. The length of 150 meters allows measurements over longer distances, which is advantageous when testing large installations or in terrain with irregular topography. The reel with handle facilitates unwinding and rewinding of the cable, thereby reducing working time and minimizing the risk of injury from uncontrolled unwinding.

Compatibility and Accessories
The test cable is designed for use with earth resistance measuring instruments, particularly for 3-pole and 4-pole measurement methods. It is used in conjunction with earthing kits, which consist of a measuring device, earth stakes, and additional test cables. Use with other test cables or accessories is possible, provided the electrical requirements (e.g. current carrying capacity, insulation class) are met.

Installation and Mounting
Installation is carried out by unwinding the cable from the reel and connecting it to the appropriate terminals of the measuring device and to the earth stakes or earth points. The reel with handle facilitates unwinding and ensures the cable does not become tangled or damaged. Installation requires no special tools or additional components; the cable is directly connected to the measurement points.

Operational Advantages
The reel with 150 m test cable offers a practical solution for mobile measurement tasks. The length is sufficient for many standard applications, and the reel with handle ensures efficient handling. The red color supports safe and quick identification of the cable during use, which is particularly beneficial in complex measurement setups. The use of high-quality test accessories contributes to the accuracy of measurement results, as a stable and resistance-free connection between device and earthing system is ensured.