Mae'r profwr gwrthiant daearu grid daear yn addas ar gyfer profi gwrthiant sylfaen gridiau pŵer trydan ar raddfa fawr megis adrannau pŵer ac is-orsafoedd. Mae'r profwr gwrthiant sylfaen grid sylfaen 5A yn addas ar gyfer profi rhwystriant sylfaen amledd pŵer, foltedd cyffwrdd, foltedd traws Cam, paramedrau nodwedd amlder pŵer cyfartal a gwrthedd pridd.
The ground grid grounding resistance tester is suitable for testing grounding resistance in various places such as substation ground grids (4Ω), power plants, microwave stations (10Ω), lightning rods (10Ω) and other places. The grounding resistance test output of the large-scale ground grid adopts the dual frequency test of 45hz and 55hz. The maximum output current of the test current is 5A, which will not cause the potential of the grounding device to be too high during the test. The grounding resistance tester of the 5A ground grid also has Strong anti-interference ability, which can be measured without power outage.