The grounding resistance tester is based on Ohm's theorem and adopts the four-wire method to test the grounding resistance of the electric power industry. It is mainly used to test the following items: 1. Accurately measure the grounding resistance, grounding resistance, and grounding reactance of large-scale grounding grids 2. Accurately measure the surface potential gradient of the large grounding grid field area; 3. Accurately measure the contact potential difference, contact voltage, step potential difference, and step voltage of the large grounding grid; 4. Accurately measure the transfer potential of the large grounding grid; 5. Measurement Grounding down conductor conduction resistance; 6. Measure soil resistivity.

Different types of ground resistance testers

At present, there are several types of ground resistance testers commonly used on the market: digital ground resistance testers, clamp ground resistance testers, multi-function clamp ground resistance testers, and ground resistance measuring instruments of the same model with different parameters.

Each ground resistance tester can accurately measure and record the ground resistance value, but how to choose a suitable measuring instrument according to the test requirements, some information will be given below for reference for the selection of the ground resistance tester.

The function of intelligent clamp ground resistance tester

The scope of application of grounding resistance tester

The digital grounding resistance tester is suitable for measuring the grounding resistance of various devices and measuring the resistance of low-resistance conductors in power, post and telecommunications, railways, communications, mining and other departments.

The function of digital ground resistance tester

Clamp-on earth resistance tester is widely used in the earth resistance measurement of electric power, telecommunications, meteorology, oil field, construction and industrial electrical equipment.

The double clamp multi-function grounding resistance tester is suitable for telecommunications, electric power, meteorology, computer rooms, power distribution lines, tower transmission lines, gas stations, factory grounding grids, lightning rods, etc.