Measuring 3-phase current, voltage, active power, reactive power, kwh, harmonic, extreme value etc. With RS485 interface. AccuracyEnergy measuring: active energy class 0.5; reactive energy class 1.0; transmission output class 0.5DisplayLCD / 12-bit LEDSignal inputNetworkThree-phase four-wire V34 / Three-phase three-wire V33VoltageRated valueAC380V / AC100VOverloadContinuous 1.2 times; Instant: 2 ...