DocumentCode :
1443383
Title :
Pilot-wire relaying on a metropolitan system
Author :
LeClair, T. G. ; Michelson, E. L.
Author_Institution :
Commonwealth Edison Company, Chicago, Ill.
Volume :
62
Issue :
8
fYear :
1943
Firstpage :
511
Lastpage :
515
Abstract :
ANUMBER of papers have been written which discuss individual pilot-wire relaying schemes. A recent paper presented by the relay subcommittee of the committee on protective devices1 analyzed the pilot-wire circuit used in these relaying schemes. The present paper is a discussion of pilot-wire systems on a large metropolitan system where they have been in successful use for many years. The paper brings out the fact that pilot-wire relaying has many advantages over other forms of relaying because of selectivity and high-speed operation. It has also been found that the reliability of a complete relaying scheme is substantially better than would be expected from the record of the pilot-wire circuit as reported in the subcommittee paper at the 1943 winter technical meeting.
Keywords :
Circuit faults; Coils; Current transformers; Fault currents; Power cables; Relays; Wires;
fLanguage :
English
Journal_Title :
Electrical Engineering
Publisher :
ieee
ISSN :
0095-9197
Type :
jour
DOI :
10.1109/EE.1943.6435880
Filename :
6435880
Link To Document :
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