... Current Sensing Clamps. 1P2W, 1P3W, 3P3W2M & 3P4W Power Measurement. True RMS Sensing. Power KW, KVAR, KVA, PF, θ ,Hz, & Energy KWh, ... . Voltage Measurement (V)Ranges Method Accuracy Input impedance 600.0VTrue RMS± 0.5%rdg ± 10dgts (>30V)2M ΩCurrent Measurement (A) ... Ranges Method Accuracy 250A 500A 1000ATrue RMS ± 0.5%rdg ± 10dgts + clamp on sensor specifications Active ...