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US 6,002,085 AGranted
Gas insulated switchgear
AssigneeHitachi, Ltd.
InventorsTomoaki Utsumi, Toshio Ishikawa, Shuzo Iwaasa, Fumihiro Endo, Tokio Yamagiwa
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Abstract
A gas insulated switchgear has a container which is filled with an insulating gas, a conductor disposed with the container, an insulator for supporting the conductor. An outer periphery of the insulator is made smooth so as to improve a dielectric strength of the device. The insulator is made of an organic substance base and an inorganic material filler added to the base. In order to improve the dielectric strength, the filler is atomised or the insulator is coated.
Claims9
A gas insulated switchgear comprising:
- a container which is filled with an insulating gas;
- a conductor disposed within said container;
- and
- an insulator for supporting said conductor in said container,
- wherein said insulator includes an organic substance base and an inorganic material filler including an aluminum fluoride added to said organic substance base, said inorganic material filler having a mean diameter of 15 .mu.m or less, said insulator having a smooth outer peripheral surface, an arithmetical mean deviation from a mean line of a profile of said smooth surface being 15 .mu.m or less.
2 more elements
Dependencies are inferred from the claim text.