... automatically detect 3-phase voltage, current, active power, inactive power, apparent power, power factor, frequency, run time, total energy and ... of AC voltage regulator, inverter, switching power supply.Specifications:TypeIAC-380-200KWLoading Power(constant adjustable)0~200KWPower FactorTest range: ... Test range: 2~50 harmonics(THD) Resolution: 0.01% Accuracy: 1%VoltageTest range: AC 0~450V Resolution: ...