Watt and voltampere transfer standard

A new instrument which will be used as a transfer device between the national watt and VA standards of the National Research Council of Canada and the standards maintained by Canadian electrical utilities and electricity meter manufacturers is described. The relative error of this instrument is less than 50 ppm for power or energy and 100 PPM for voltampere measurements. The stability of the instrument during a field test cycle of about two weeks was on the order of 20 ppm. A dedicated pulse-frequency counter and a stable phantom power source were supplied to utilities to achieve high-accuracy on-site measurements.<
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