Gas-insulated epoxy bushing having an internal throat shield and

Details Gas-insulated epoxy bushing having an internal throat shield and Gas-insulated epoxy bushing having an internal throat shield and

1982-04-08

1984-07-03

Askin, Laramie E.

Electricity: conductors and insulators

With fluids or vacuum

Insulators

174142, H01B 1726, H01B 1736

Patent

active

044581017

ABSTRACT:
A gas-insulated bushing comprises an elongated epoxy insulating shell having a grounded mounting plate secured at one end thereof and an electrical connection terminal secured at the other end thereof. An inner conductor at high voltage is disposed within the shell and is secured to the terminal, with an insulating gas electrically insulating the inner conductor from the shell. An electrically grounded ground shield is cast into the epoxy shell and extends outwardly to physically and electrically contact the grounded mounting plate. A throat shield is secured to the mounting plate and extends longitudinally into the interior of the shell. The dual shield system disclosed functions to inhibit puncturing of the insulating shell, with a resultant loss of insulating gas, in the event of either internal or external flashovers.

REFERENCES:
patent: 1253736 (1918-01-01), Sieber
patent: 1350925 (1920-08-01), Faccioli
patent: 1526023 (1925-02-01), Steinberger
patent: 2945913 (1960-07-01), Conangla
patent: 3018318 (1962-01-01), Franklin
patent: 3312776 (1967-04-01), Deck et al.
patent: 3602629 (1971-08-01), Friedrich et al.
patent: 4166194 (1979-08-01), Bolin
patent: 4272642 (1981-06-01), Classon
patent: 4296274 (1981-10-01), Cookson

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