Electrical bushing for use with a gas insulated electrical appar

Details Electrical bushing for use with a gas insulated electrical appar Electrical bushing for use with a gas insulated electrical appar

1987-03-11

1988-09-27

Askin, Laramie E.

Electricity: conductors and insulators

Insulators

Combined

174 31R, H01B 1726, H01B 1742

Patent

active

047743859

ABSTRACT:
An electrical bushing for use with a gas insulated electrical apparatus comprises an insulating tube, a central conductor extending through said insulating tube, a grounded cylindrical shield disposed between the central conductor and the insulating tube, an intermediate shield disposed between, and electrically insulated from, the cylindrical shield and the central conductor so as to surround the latter. The intermediate shield has a reduced diameter portion in the vicinity of the free end of the grounded cylindrical shield, large diameter portions and tapered portions connecting the reduced diameter portion to the large diameter portions to provide a smooth distribution of the electric field between the central conductor and the field moderating ring, so that the concentration of the electric field is moderated by the grounded shield and the intermediate shield.

REFERENCES:
patent: 4629822 (1986-12-01), Kitamura

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