The High-Voltage Wattmeter

A complete laboratory set-up for measuring losses at low power factors from high-voltage circuits is assembled around a moving water column resistance multiplier which permits the direct use of standard low-voltage instruments. A shielding system is used to eliminate capacitance effects in the loading and voltage circuits. The paper contains structural details of the wattmeter aggregation and the loss loading equipment, and the operating procedure for conducting atmospheric and insulator loss measurements.