Title :
A high sensitivity power factor bridge
Author :
Kouwenhoven, W. B. ; Banos, Alfonso
Author_Institution :
Johns Hopkins University, Baltimore, Md.
Abstract :
AN A-C. BRIDGE of high precision has been developed for power factor measurements in an investigation of the properties of cable compounds and papers and of the characteristics of cables that occur after impregnation. The bridge, a modified form of the Schering bridge, possesses several novel features and advantages. The detecting instrument is a moving coil a-c. galvanometer with field excitation supplied from a phase shifting transformer permitting independent ratio and phase-angle balances. A shielded transformer electrostatically isolates the galvanometer from the bridge circuits. This bridge is completely shielded and guarded.
Keywords :
Arresters; Bridge circuits; Cable shielding; Capacitance; Circuit breakers; Dielectric measurements; Power transformer insulation;
Journal_Title :
Electrical Engineering
DOI :
10.1109/EE.1932.6429595
