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US 6,759,616 B2Granted
Gas insulated switchgear
AssigneeHitachi, Ltd.
InventorsToshiaki Rokunohe, Fumihiro Endo, Kenji Tsuchiya, Toyokazu Tanaka
Life of this patent
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Abstract
A gas insulated switchgear capable of performing maintenance and inspection of a breaker without shutting down a bus line includes a first case containing a breaker and having a bushing for leading a load and a second case containing a plurality of disconnectors and having a plurality of bushings for leading a plurality of bus lines to be connected to the disconnectors. The first case and the second case are connected to each other through a gas partition spacer.
Claims3
A gas insulated switchgear including bus lines, a plurality of bus line disconnectors and a breaker, comprising:
- a first case containing said breaker, said first case being earthed;
- a second case containing said plurality of bus line disconnectors, or a plurality of second cases containing said plurality of bus line disconnectors in a single gas compartment, wherein
- said first metallic case and said second metallic case are connected to each other through a gas partition spacer;
- and
- which further comprises a bypass disconnector for bypassing between a leading point of a bushing for leading a load and one of said bus lines;
- and a current detector for measuring a center conductor current of said bushing.
3 more elements
Dependencies are inferred from the claim text.