... measurement of electrical parameters of current, voltage, frequency, power, power factor and with high accuracy, good stability, anti- ... Input Current: 5A Voltage: 100V/220V/380V (special order instructions)Overload: 1.2 times, 10 times the instantaneous current ... ± 10%Expansion: with the extended range of shunt or transformerAuxiliary power supply: AC220V ± 10%, or AC/DC85V ~ 270VPower consumption ...