... of measurement parameter 5) Measure total power value and five power parameters of each phase in 3-phase measurement mode respectively 6) Autorange and ... one time, the instrument can measurement for long time 9) Large LCD display, multifunctional button controlSpecifications:1) Max. common-mode voltage ... , Humidity 80%, frequency for voltage, current: 45 Hz ~ 65 Hz Three Phase Digital Power Clamp Meter