Clamp earth resistance tester why not grounding can measure resistance
A grounding resistance measurement of grounding resistance is the basic principle of measuring loop resistance. The jaw part of the clamp table is composed of a voltage coil and a current coil.
The voltage coil provides an excitation signal and induces an electric potential E on the circuit under test. Under the action of the potential E, the current will be generated in the tested circuit I. The meter is used to measure E and I, and the measured resistance R is obtained by the formula.
The traditional method must be grounded and auxiliary grounding tripping. The ground electrode to be measured shall be separated from the ground system, and the pole and current must be located in the soil at a prescribed distance to be measured as an auxiliary electrode.
