High-voltage bushing with double-layered potential control inser

Details High-voltage bushing with double-layered potential control inser High-voltage bushing with double-layered potential control inser

1980-11-03

1983-01-25

Askin, Laramie E.

Electricity: conductors and insulators

With fluids or vacuum

Insulators

174 73R, 174143, H01B 1728

Patent

active

043705146

ABSTRACT:
A high voltage insulating bushing formed of wound insulating foils is provided with a double layer material interposed between preselected windings of the insulating foils. The double layer material is formed of insulating material which has been laminated with an electrically conductive material, such as aluminum, and serves to advantageously distribute the electric field potential throughout the insulator body. The double layer material is arranged so that the electrically conductive material faces inwardly toward a longitudinal axis of the insulator body. The edges of a double layer foil which are near the outer surface of the insulator body are folded inward to form an edge wherein the electrically conductive material is enclosed within the insulating layer. In some embodiments, voids formed between the insulating foils and the folded edges of the double layer material are filled with an insulating medium, such as SF.sub.6 gas.

REFERENCES:
patent: 3390312 (1968-06-01), England
patent: 3462545 (1969-08-01), Grimmer

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