Electrical bushing and method of manufacturing thereof

Details Electrical bushing and method of manufacturing thereof Electrical bushing and method of manufacturing thereof

H - Electricity

01

B

26/142, 337/97

H01B 17/26 (2006.01) H01B 17/42 (2006.01) H01B 19/00 (2006.01)

Patent

CA 1192639

ELECTRICAL BUSHING AND METHOD OF MANUFACTURE THEREOF ABSTRACT An electric bushing comprises an electrical conductor , a first insulating layer on the conductor, a stress grading layer over the insulating layer, and an outer insulating layer mechanically connected to a flange which is electrically connected to the stress grading layer in such a manner that minimal, if any, mechanical stress is transmitted from the flange to the stress-grading layer . The flange serves to mount the bushing on to the metal housing of an electrical apparatus, such as switchgear or transformers. The flange is of metal or contains a metal element and is electrically connected to the housing, when installed, making an electrical connection between the housing and the stress grading layer The outer insulating layer is sealed to the end regions of the electrical conductor providing mechanical attachment between the conductor and the flange which secures the bushing to the electrical apparatus.

411740

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