A sliding-rate meter

A new type of meter is suggested to replace the existing maximum-demand indicators. The device works in the same way as a watt-hour meter, but integrates the relative values of the units as a function of the demand, instead of registering only the quantities of units consumed. Hence the meter reading does not indicate kilowatt-hours, but a figure which is proportional to the payment due. The law denning the varying values of the units consumed at different demands is introduced into the meter by modifying its load/speed curve. The new performance of the meter is obtained by altering the features of the magnetic brake. The constructional, details of the proposed braking element are shown, its equivalent electric circuit is considered, and its performance discussed. The reconstruction of the meter characteristic is outlined, and the errors and compensation methods briefly discussed.