NDLI: Tests on Westinghouse oil circuit breakers at Baltimore

Content Provider	IEEE Xplore Digital Library
Author	MacNeill, J. B.
Copyright Year	1920
Abstract	This paper deals with short-circuit tests made recently at Baltimore on dead tank oil circuit breakers of Westinghouse manufacture. Tests were made against the combined capacities of the Consolidated Gas, Electric Light & Power Company and the Pennsylvania Water & Power Company systems, and currents as high as 24,000 amperes at 13,200 volts were interrupted repeatedly. Tests on breakers of different sizes are described, the rupturing capacity ratings of the breakers referred to, ranging from 10,000 amperes at 15,000 volts up to 40,000 amperes at 15,000 volts. Improvements of design and construction have greatly increased the ability of this type and make of breaker to handle heavy short-circuit currents and severe duty cycles. The demonstration connected with the opening of heavy short circuits, including oil throwing and gas ejection, has been controlled and the fire hazard greatly reduced. A positive means for preventing oil throw, while at the same time relieving gas pressures in breaker tanks, has been developed. Data are given regarding tripping speed, length of arc duration, and condition of the oil and circuit-breaker structure after the tests.
Starting Page	537
Ending Page	546
Page Count	10
File Size	19046738
File Format	PDF
ISSN	03606449
Volume Number	41
Issue Number	7
Language	English
Publisher	American Institute of Electrical Engineers
Publisher Date	1922-01-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Circuit breakers Companies Particle separators Gravity Testing Switches Pistons
Content Type	Text
Resource Type	Article

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