DocumentCode :
795519
Title :
Protection of Induction Motors Against Unbalanced Voltage Operation
Author :
Cummings, Paul B. ; Dunki-Jacobs, John R. ; Kerr, Robert H.
Author_Institution :
General Electric Company, Building 50-328, 1 River Road, Schenectady, NY 12345.
Issue :
3
fYear :
1985
fDate :
5/1/1985 12:00:00 AM
Firstpage :
778
Lastpage :
792
Abstract :
The results are presented of a computer study to determine various operating quantities of squirrel-cage induction motors as a function of unbalanced voltage and mechanical loading utilizing a new analytical technique. A similar study with the extreme unbalance of single phasing was reported elsewhere. The operating characteristics of various motor protective devices are then superimposed on the motor operating curves to evaluate the effectiveness of the specific relay. The results of this study will aid in selecting and setting relays to provide protection against voltage unbalance and may possibly provide an engineering rationale for the development of future protective devices.
Keywords :
Chemical industry; Hardware; Induction motors; Petroleum; Protection; Protective relaying; Rotors; Stators; Temperature; Voltage;
fLanguage :
English
Journal_Title :
Industry Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-9994
Type :
jour
DOI :
10.1109/TIA.1985.349499
Filename :
4158056
Link To Document :
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