Power and Harmonics Analyzer PROVA-6830A Series 1). Clamp Meter:100A,1000A,3000A for option 2).Optical isolated USB Interface PROVA-6830A+6801 Power and Harmonics Analyzer (100A) PROVA-6830A+6802 Power and Harmonics Analyzer (1000A) PROVA-6830A+3007 Power and Harmonics Analyzer (3000A) Analysis for 3P4W, 3P3W, 1P2W, 1P3WTrue RMS Value (V 123 and L 123 )Active Power (W, KW, MW, GW)Apparent and ...