Laminar insulating material for electrical apparatus

Details Laminar insulating material for electrical apparatus Laminar insulating material for electrical apparatus

1975-08-14

1976-10-26

Miller, J D

Electricity: conductors and insulators

Feedthrough or bushing

Compression

317 61, 317 72, 174 17VA, 174 17GF, 174137R, 428311, 428186, H02H 322

Patent

active

039886450

ABSTRACT:
The invention is directed to a laminar insulating material for electrical apparatus insulated by a fluid such as an insulating gas or an insulating liquid. The laminar insulating material includes two cover layers which are made of a material of relatively high density and an insulating material of relatively low density which is permeable for the fluid and fills the space between the cover layers.
The invention is particularly well suited for the manufacture of the housings of overvoltage arresters which are arranged in the metal encapsulation of a gas-insulated, high-voltage installation. The laminar insulating material accomplishes here a faultless separation between the insulating gas in the metal encapsulation and that in the overvoltage arrester. Gases which penetrate the cover layers can be led off to the outside from the gas-permeable insulating material.

REFERENCES:
patent: 1130268 (1915-03-01), Haefely
patent: 2947903 (1960-08-01), Westrom
patent: 3226593 (1965-12-01), Pittman
patent: 3248599 (1966-04-01), Masuda
patent: 3325584 (1967-06-01), Herzig
patent: 3598688 (1971-08-01), Bellamy
patent: 3842318 (1974-10-01), Nitta
patent: 3875466 (1975-04-01), Jakszt
patent: 3928705 (1975-12-01), Loft et al.

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