The grounding resistance test meter is a kind of instrument specially used to directly measure the grounding resistance value of various grounding devices.Earth Resistance Tester This table is applicable to various types of grounding resistance tests.Earth Resistance Tester So what standards does its measurement record meet?Earth Resistance Tester The TNS zero-maintenance maintenance system must be selected in the power line dedicated to the neutral point directly grounded on the construction site. When the construction site and the external power line share the same power supply system,Earth Resistance Tester the power line selects the TT system, and no part of the equipment should be connected to zero for maintenance,Earth Resistance Tester and the other part of the equipment should be grounded for maintenance.

Grounding resistance test meter The total capacity of the transformer (generator) does not exceed 100KvA, Earth Resistance Tester the working grounding resistance and maintenance grounding resistance are not greater than 109, the repeated grounding resistance is not greater than 309 each but the repeated grounding is not less than three,Earth Resistance Tester and all repeated grounding resistances are connected in parallel The equivalent resistance is not greater than 109. The total capacity of the transformer (generator) is more than 100KvA, the working grounding resistance and maintenance grounding resistance are not greater than 4,Earth Resistance Tester the repeated grounding resistance is not greater than 109,Earth Resistance Tester but the repeated grounding is not less than three.

When the sensitivity of the galvanometer is too high,Earth Resistance Tester the potential detection pin P'can be penetrated into the soil shallowly. When the sensitivity of the galvanometer is not enough,Earth Resistance Tester water can be irrigated along the potential detection needle and the current detection needle to make the soil moist. When measuring, the grounding line must be disconnected from the equipment being maintained in order to obtain accurate measurements.Earth Resistance Tester Pay attention to the following points when using the grounding resistance test table: test result = measured resistance value * time factor;

The grounding resistance should be regular (at least once a month);Earth Resistance Tester the test person is an electrician;Earth Resistance Tester the monitoring person can be a construction professional manager such as a construction worker or safety officer.