... power,power factor ,frequen Description: Intelligent digital instrument be used in electricity grids , automation control system to measure ... power ,apparent power,power factor ,frequency.LED or LCD display , Local data queryCurrent Conversion Ratio is programmable. ... /DC 80V-270V, AC220V,AC380V,AC100VVarious shape can be choosed. Accuracy of measurementVoltage0.5 degreeCurrent0.5 degreeActive power0 ...