DocumentCode :
1272782
Title :
Some recent advances in the design of relays for the protection of alternating-current systems
Author :
Lipman, C.L.
Volume :
70
Issue :
425
fYear :
1932
fDate :
5/1/1932 12:00:00 AM
Firstpage :
545
Lastpage :
566
Abstract :
The paper postulates that the success of any protective system depends upon the reliability and suitability of the relays employed. The requirements of an ideal protective relay are formulated, and the constructional and operatingcharacteristics of some novel designs of protective relays are compared therewith. For convenience of treatment, the relays¿all of the induction type¿are divided into four groups in the order of their development. It is submitted that the improved differential or balance type relay (Group A) and the novel time-selective relay (Group U)described in the paper, approach very closely to the ideal aimed at. Some novel working principles are described, but only one form of construction, capableof universal application, is followed throughout the paper, the aim being economical production and uniformity of performance.
Keywords :
protective apparatus;
fLanguage :
English
Journal_Title :
Electrical Engineers, Journal of the Institution of
Publisher :
iet
Type :
jour
DOI :
10.1049/jiee-1.1932.0053
Filename :
5315238
Link To Document :
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