H - Electricity – 01 – B
Patent
H - Electricity
01
B
337/11, 337/5
H01B 17/26 (2006.01) H01B 17/54 (2006.01)
Patent
CA 1089944
ABSTRACT OF THE DISCLOSURE An improved vapor-cooled terminal-bushing is provided for increased current-carrying capacity, such as 6,000 amperes, for example, in an oil-type circuit-breaker, being provided with a "dry" body portion, utilizing resinous materials, such as epoxy-resin formulations, for example. Preferably, the body portion of resinous materials, such as epoxy resin, for example, is composite, or of a two-piece construction, having an inner first epoxy-resin formulation having improved dielectric strength, and an outer-disposed externally-located "petticoat"-type insulating second body portion, having weather-sheds, the second weather-shed annular body portion being preferably cast directly onto the inner high-dielectric-strength first epoxy-body portion, and having some flexibility for adherence purposes. An externally-located tubular metallic preferably finned heat-exchanger or cooling condenser, having a tubular central hub portion, constitutes an extension of the inner, elongated, tubular, high-voltage terminal-lead, which is partially filled with a low-boiling- point cooling liquid or refrigerant, such as "Freon-11TM", for example.
279615
Cushing George B.
Kothmann Richard E.
Mcconnell And Fox
Westinghouse Electric Corporation
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