DocumentCode :
1267249
Title :
Abridgment of parallel operation of transformers: Whose ratios of transformation are unequal
Author :
Macfebban, Mabel
Author_Institution :
Operating Department, Southern California Edison Company
Volume :
48
Issue :
11
fYear :
1929
Firstpage :
809
Lastpage :
812
Abstract :
An equation is developed for use in meeting emergency conditions which necessitate the paralleling of transformer banks whose impedances expressed in percentage are not equal. This equation makes it possible to calculate what change should be made in the ratio of transformation of the bank with the lower percentage impedance in order to prevent its being overloaded when the total load approaches the combined capacity of the two banks. It is pointed out that such an expedient is a makeshift justifiable only when maintenance of service is the paramount consideration and efficiency is for the time being of secondary importance. When conditions arise which do justify such a temporary arrangement, the method developed in the present paper affords a simple yet accurate means of solving the problem.
fLanguage :
English
Journal_Title :
A.I.E.E., Journal of the
Publisher :
ieee
ISSN :
0095-9804
Type :
jour
DOI :
10.1109/JAIEE.1929.6535941
Filename :
6535941
Link To Document :
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