The function of the ground resistance tester is to
1. Accurately measure the grounding impedance, grounding resistance, and grounding reactance of large grounding grids;
2. Accurately measure the surface potential gradient of the grounding grid area;
3. Accurately measure the contact potential difference, contact voltage, step potential difference, and step voltage of large grounding grids;
4. Accurately measure the transfer potential of large grounding grids;
5. Measure the conduction resistance of the grounding down conductor;
6. Measure soil resistivity.
The most advanced ground resistance tester abandons the traditional manual hand-cranked power generation method, adopts advanced large-scale integrated circuits, and applies DC/AC conversion technology to combine three-terminal and four-terminal measurement methods into one model of new digital ground resistance tester. It is suitable for measuring the grounding resistance of various devices and the resistance value of low-resistance conductors in electric power, post and telecommunications, railways, communications, mining, and other departments; this meter can also measure soil resistivity and ground voltage. Importantly, it measures whether the resistance of the ground electrode to the ground meets system requirements, and the state of ground resistance is very important for lightning protection, electrical safety, and impedance to ground voltage (such as the DC state in post and telecommunications, and the directionality and efficiency of radio stations).
