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.
Claims16
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;
- and
- an earthing switch provided in said second case which is aligned along a common axis with one of said plurality of bus line disconnectors, wherein
- said first case and said second case are connected to each other through a gas partition spacer.
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, said first case and said second case being connected to each other through a gas partition spacer;
- an earthing switch provided in said second case in alignment with one of said plurality of bus line disconnector;
- and
- operating devices for operating said plurality of bus line disconnectors, respectively, said operating devices having rotating devices to drive said plurality of bus line disconnectors, respectively;
- and
- wherein one of said operating devices is constructed so as to operate both one of said plurality of bus line disconnectors and said earthing switch.
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, said first case and said second case being connected to each other through a gas partition spacer;
- an earthing switch provided in said second case in alignment with one of said plurality of bus line disconnector;
- and
- operating devices for operating said plurality of bus line disconnectors, respectively, said operating devices having rotating devices to drive said plurality of bus line disconnectors, respectively;
- and
- wherein said operating devices include chains disposed outside said first and second cases and engaging with said rotating members extending from said plurality of bus line disconnectors to the outside of said first and second cases in a direction traversing the axial lines of said plurality of bus line disconnectors, and rack type gears provided for movable electrodes of said plurality of bus line disconnectors and gears joined to said rotating members and meshing with said rack type gears, said rotating members being driven by said chains.
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, said first case and said second case being connected to each other through a gas partition spacer;
- an earthing switch provided in said second case in alignment with one of said plurality of bus line disconnector;
- and
- operating devices for operating said plurality of bus line disconnectors, respectively, said operating devices having rotating devices to drive said plurality of bus line disconnectors, respectively;
- and
- wherein each of said plurality of bus line disconnectors is supported in said second case by a post spacer and spaces for said plurality of bus line disconnectors and for bushings on the bus line side are formed in said second case which is constructed as a single case.
Dependencies are inferred from the claim text.