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The establishment of a DC power meter calibration system using a DC current comparator and a synchronous sampling technique at China Electric Power Research Institute (CEPRI) is described. Measurements can be made at DC voltages ranging from 10mV to 1000V, and DC currents from 10mA to 500A. The system features a synchronous voltage/current sampling system and a multi-ratio DC current comparator. The...
A reactive power standard, based on the current comparator power bridge, established at CEPRI, for calibrating active/reactive power/energy meters under sinusoidal conditions is described. It allows calibration of active/reactive power and energy meters at voltages between 60 V to 600 V and currents between 0.1 A to 200 A, any power factor from zero lag through unity to zero lead, and test frequencies...
This paper describes the establishment of a single-phase power/energy standard at CEPRI. It is based on a computer-controlled commercial version of a NRC developed current-comparator-based power/energy bridge. The bridge allows the calibration of single-phase active/reactive power and energy meters at voltages up to 600 V, currents up to 100 A, any power factor from zero lag through unity to zero...
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