High voltage terminal bushing for electrical apparatus

Details High voltage terminal bushing for electrical apparatus High voltage terminal bushing for electrical apparatus

1981-07-21

1984-10-16

Askin, Laramie E.

Electricity: conductors and insulators

With fluids or vacuum

Insulators

174142, H01B 1726

Patent

active

044776926

ABSTRACT:
This high-voltage terminal bushing comprises a tubular shell of electrical insulating material having a passageway extending between its ends and an electrical conductor within the passageway that has an external surface spaced from the internal surface of the passageway. The external surface of the conductor is covered with a thin coating of insulating material spaced from the internal surface of the passageway by a cylindrical air gap. The coating has sufficient dielectric strength to prevent any corona streamers from the conductor from impinging against said internal surface at impulse voltages up to the rated impulse insulation level of the bushing.

REFERENCES:
patent: 3086073 (1963-04-01), Arone et al.
patent: 3456222 (1969-07-01), Berg

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