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Measures Active Apparent & Reactive Power Power factor CosØ voltage rms current rms three phase voltage and three phase current Operates with three phase balanced unbalanced loads and distorted waveforms 500Vrms 15Arms Dc-1kHz manual or autoranging protected inputs Isolated inputs Typical accuracy 0.2% reading + 0.2% range Can be used with current transformers Indicates power factor correction capacitors RS232 (optional USB) Programmable as standard Includes PC_W3P Software for Windows 230Vac or 110Vac 50/60 Hz power input