The controls and instrumentation for a 500 kVA motor-generator set embody the latest technology to provide a full array of electrical data to the operator. In this case only the current is monitored for the drive motor. The ouput side has all the important electrical parameters monitored and recorded by the multi-function digital display power meter. The main parameters covered are kW, kVA, kVAR, power factor, THD, all phase and neutral currents, all line to line and line to neutral voltages, hours run, kW hrs, kVA hrs, kVAR hrs, peak demand, etc.