... 0.2%Frequency40~60Hz, accuracy 0.2HzFunctionActive power, Reactive power, Apparent power, Accuracy: 0.5% classElectric energyFour ... power pulse output, photo-couple relayEnvironmentWorking environment-10~55ºCStore environment-20~75ºCSafetyVoltage withstandInput and power>AC ... 2kV, input and output>AC 2kVInsulationInput, output, power supply to machine hull ...