Gas-insulated high-voltage bushing with shield electrode embedde

Details Gas-insulated high-voltage bushing with shield electrode embedde Gas-insulated high-voltage bushing with shield electrode embedde

1979-09-10

1981-06-09

Askin, Laramie E.

Electricity: conductors and insulators

With fluids or vacuum

Insulators

174142, H01B 1726, H01B 1742

Patent

active

042726425

ABSTRACT:
An electrical bushing which contains a pressurized gas as the main insulation and which contains a metallic shield electrode therein near the grounded end of the tubular outer insulator for control of the voltage distribution, also includes a solid insulating body which is made of a material having a higher permittivity than the insulating gas, thus enabling the bushing to have a smaller diameter. The metallic shield electrode is at least partially embedded in the insulating body. The insulating body includes an upper field-controlling portion in the space between the tubular outer insulator and the central current conductor which includes an inner side that extends towards the conductor to form a tapered annular space, most of the upper portion being located beyond the metallic shield electrode with respect to the grounded end of the tubular insulator.

REFERENCES:
patent: 1752281 (1930-03-01), Austin
patent: 2146069 (1939-02-01), Higgins
patent: 2967901 (1961-01-01), Priaroggia
patent: 3934071 (1976-01-01), Tahiliani

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