... option 2).Optical isolated USB Interface PROVA-6830A Series Power and Harmonics Analyzer (100A;1000A;3000A) Analysis for ... , 1P2W, 1P3W True RMS Value (V 123 and L 123 ) Active Power (W, KW, MW, ... GW) Apparent and Reactive Power (KVA, KVAR) Power Factor (PF), Phase ... Please refer to users manual for more detailed and up-to-date description of specification Range Resolution ...