Some features and improvements on the high-voltage wattmeter

The high-voltage wattmeter herein described is the result of three years of study and experimental work carried on at Stanford University. Included in this report on the wattmeter is a description of a high-voltage voltmeter and a crest voltmeter. The operation of these instruments is entirely independent of any connection to the supply transformers. In other words the equipment in its present form can be connected directly in on the high voltage line and simultaneous readings of the power, total effective voltage, crest factor and line current can be taken at any instant and at any voltage up to 175 kv. to neutral.