Bushing for gas-insulated electrical equipment

Details Bushing for gas-insulated electrical equipment Bushing for gas-insulated electrical equipment

1981-11-18

1984-02-14

Askin, Laramie E.

Electricity: conductors and insulators

With fluids or vacuum

Insulators

174142, 174209, H01B 1726, H01B 1736, H01B 1742

Patent

active

044318596

ABSTRACT:
The invention comprises a bushing surrounding an electrical conductor, including a porcelain tube which employs a gaseous insulator, an insulating tube disposed with a space of small volume set relative to the inner periphery of the porcelain tube, the small space being filled with an insulating medium which is deformable with a predetermined force. According to the construction, when the porcelain tube has been damaged, its fragments can thus be prevented from scattering far. The flashover of the bushing can be prevented by disposing compression springs in the lower part of the insulating tube, and the electric field distribution of the outer surface of the bushing can be improved by coating the surface of the insulating tube with an electrically-conductive coating material.

REFERENCES:
patent: 2089284 (1937-08-01), Milliken
EPRI Journal, Oct. 1979, R&D Status Report of the Electrical Systems Division, p. 48, column 3 to p. 49, end of column 2.

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