Abstract :
Outstanding economies can be effected by metering high voltage loads on the low voltage side of power transformers, a practical method of which is described in this article. A compensating meter is used in combination with a watthour meter, both connected to instrument transformers on the low voltage side; accuracy is equal to, and sometimes better than, metering on the high voltage side. Calculations illustrating the practical application of the method, and performance data for an actual installation are given.