Colliery is low voltage electric equipment comprehensive properties tester in pit

The utility model provides a colliery is low voltage electric equipment comprehensive properties tester in pit, test terminal A establishes ties with the current test unit, then parallelly connected with short -circuit test unit, operate time test unit and electric leakage test unit respectively simultaneously. Test terminal A, ampere meter, electric capacity, short -circuit test button and test terminal B establish ties, and it has the protective tube still to establish ties between test terminal A and the ampere meter, second resistance and operate time test button form the experimental current circuit of operate time, and third resistance, resistance select change over switch, trimmer potentiometer and electric leakage test button component to leak electric test current circuit, test terminal A, protective tube, ampere meter, a series resistance, then it is parallelly connected with hourglass electric test current circuit with the experimental current circuit of operate time more respectively, establish ti