Metering with transformer-loss compensators

The transformer-loss compensator is proposed as an economical answer to the problem of metering on the low-voltage side of the transformer, where supplying and billing for energy and demand must be done at distribution or transmission voltages. Use of the compensator, an accessory to the regular watt-hour meter, necessitates no changes in the meter, and its accuracy has equaled that of meters on the high-voltage side.