DocumentCode :
1447084
Title :
Protection of pilot-wire circuits
Author :
Harder, E. L. ; Bostwick, M. A.
Author_Institution :
Westinghouse Electric and Manufacturing Company, East Pittsburgh, Pa.
Volume :
61
Issue :
9
fYear :
1942
Firstpage :
645
Lastpage :
651
Abstract :
THIS paper reviews the problem of protecting pilot-wire circuits, briefly discusses the sources of disturbing voltages, describes two types of neutralizing transformers, and illustrates how they are used to distribute the disturbing voltage most favorably throughout the pilot-wire circuit. The recent increase in use of high-speed pilot-wire relays for the protection of important power circuits has accentuated the need of better understanding of the pilot-wire protection problem. Therefore, a review of this general subject and a description of a new type of neutralizing transformer with mathematical formulas to determine its effectiveness, is considered timely.
Keywords :
Circuit faults; Electric potential; Impedance; Power transformer insulation; Relays; Windings; Wires;
fLanguage :
English
Journal_Title :
Electrical Engineering
Publisher :
ieee
ISSN :
0095-9197
Type :
jour
DOI :
10.1109/EE.1942.6436521
Filename :
6436521
Link To Document :
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