Extech 380320 Analog Insulation TesterExtech 380320 Analog Insulation Tester Analog Insulation Tester Three Insulation Test Ranges With Live Circuit Warning that displays the actual AC voltage measurement Key Features: Large easy to read analog display Three test voltages 250V, 500V, and 1000V Insulation Resistance to 400M Lock Power On feature for extended test times Automatic discharge circuit Measures continuity to 3 , Resistance to 500, and AC Voltage to 600V 1. 3mA short circuit
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