HDT20B digital insulation resistance tester 1.Resolution: 1M, With 750V test. 2.Rated ... of all kinds of electron equipment and insulation material, such astransformer,generator,cable,switch,electric equipment and so on. Be used for ... current: ‹1.5mALow Power DisplayAC Voltage Test: 750V(40-70Hz) Insulation Resistance: ≥500MW(1000V) Withstand Voltage: AC2KV50Hz 1min Work Temp.& Humidity ...