1000A 3 Phase Power Analyzer and Datalogger from Extech. Four clamps with simultaneous display on single phase, 3-phase/3-wire or 3-phase/4-wire systems. large LCD display displays 10 parameters simultaneously. up to four current probes can be connected. Clamp-on True RMS power measurements with software for harmonics analysis. Displays active power (kW), apparent power (kVA), reactive power (kVAR), and power factor. Current up to 1000A and voltage up to 600V. logs up to 20,000 sets of measurements. Programmable start/stop. PC interface. CAT III-1000V, CE approved.