... , current, active power, reactive power, power factor, frequency, Kwh, 4 quadrant energy, etc. Total 28 elect DW9A/B/C/D/E series 3 Phase Coulometer ... DW9A/B/C/D/E series 3 Phase Coulometermeasuring instrumentsspecificationFeatures:1) To measure: voltage, current, active power, reactive power, power factor, frequency, Kwh, 4 quadrant ...