Extech 382090 Analyzer for 3-Phase Power Quality 1000A features the following: four clamps for power measurements on single phase, 3-phase/3-wire or 3-phase/4-wire systems; Large backlighting LCD displays 10 parameters simultaneously (kW, kVAR, kVA, PF plus the voltage and current of the three phases); Clamp-on True RMS power measurements with software for Harmonics analysis, et cetera