Power and Harmonics Analyzer PROVA-6830A Series 1).Clamp Meter:100A,1000A,3000A for option 2).Optical ... isolated USB Interface PROVA-6830A Series Power and Harmonics Analyzer (100A;1000A;3000A) Analysis for 3P4W ... (V 123 and L 123 ) Active Power (W, KW, MW, GW) Apparent and Reactive Power (KVA, KVAR) Power Factor (PF), Phase ...