Inductor devices – With temperature modifier – With inductor insulating fluid circulating means
Patent
1978-04-25
1980-05-27
Kozma, Thomas J.
Inductor devices
With temperature modifier
With inductor insulating fluid circulating means
336 58, 336 94, H01F 2710
Patent
active
042052890
ABSTRACT:
Electrical inductive apparatus cooled by a two-phase dielectric fluid which vaporizes within the normal operating temperature range of the apparatus. The electrical inductive apparatus consists of a sealed enclosure surrounding a magnetic core and electrical winding assembly. A non-condensable gas fills a major portion of the enclosure at no-load conditions to provide adequate dielectric strength around the apparatus and is substantially removed to a storage tank when the apparatus reaches normal operating conditions. The required volume of the storage reservoir is proportional to the free volume of the enclosure and the volume of liquid dielectric disposed therein. The bottom surface of the enclosure includes a recessed channel portion configured to closely surround the lower yoke of the magnetic core and which serves to reduce the amount of liquid dielectric utilized and the free volume of the enclosure thereby minimizing the required volume of the storage reservoir for the non-condensable gas.
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Electric Power Research Institute Inc.
Kozma Thomas J.
Lackey D. R.
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