Development of A Handheld Circuit Resistance Tester with Grounding Testing Mode
A handheld circuit resistance tester with"grounding test"mode has been developed,and the working principle,composition,and structure of the instrument to achieve"measurement with grounding wire"mode are described in detail.The instrument was used to test the circuit resistance of a 35kV circuit breaker.The results showed that the instrument has high testing accuracy,good stability,and is flexible,compact,and portable.It has achieved intelligent testing of circuit resistance and can be widely applied to the testing of circuit resistance in open circuit breakers,GIS equipment,and ring main cabinets.
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