... U, I, P, Q, PF, F, EP all power parameter.2). Class: active power 0.5 class; reactive power 1 class.3 ... Line, Three Phase Four LineInputmeasurementVoltageRated valueAC 100V,AC 400VOverloadingContinuance:1.2 times; Instantaneous: Voltage 2 times (10S)Power ... light coupler relayOperation conditionAmbient temperature: -10~55°C, store condition :-20~75ºC relative humidity ≤93%,no corrosive gas, height ...