Measurement of Peak Voltages in High-Voltage Testing, with particular reference to a Modified Diode Peak Voltmeter

The paper discusses briefly the various known methods of measuring a.c. peak voltages in connection with h.v. testing, and mentions the errors and drawbacks associated with them. Results of a method of measurement, based on the principle of the diode peak voltmeter, are given whereby wave-shape and frequency errors are eliminated within wide limits. Comparisons are made with sphere-gap calibrations,1 and also with a voltmeter of the ¿rectified condenser-current¿ type.2 The method described, although primarily intended to apply directly to the h.v. connection, can be used in conjunction with a voltage transformer (or tertiary winding on the h.v. transformer).