... detect 3-phase voltage, current, active power, inactive power, apparent power, power factor, frequency, run time, total ... voltage regulator, inverter, switching power supply.Specifications:TypeIAC-380-200KWLoading Power(constant adjustable)0~200KWPower FactorTest range ... Phase 220VDischarging Time0~99 hours 59 minutes, constant adjustableCooling ModeAir coolingPC CommunicationRS485, USB data port, ...