... Data 2,Rated Voltage(V):Three-phase four-wire 3x220/380V or 3x57.7/100V Three-phase Three-wire 3x100V or 3x380V 3, ... and electricity stealing proof,high accuracy, high reliability, high overload, low power consumption, light weight etc 2,Measure three phase active electric energy, Do ... Frequency(Hz): 50/60Hz Accuracy class 1 or 2 Three phase three wire electronic digital multi tariff kWh Meter,