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US 11,901,709 B2Granted
Gas-insulated switchgear
AssigneeMitsubishi Electric Corporation
InventorsTakayuki Fukuoka, Naoaki Inoue
Life of this patent
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Abstract
Provided is a gas-insulated switchgear having a circuit breaker tank with a reduced size. The gas-insulated switchgear includes: a connection conductor connected to two or more power cables, for each phase, inside the circuit breaker tank; a solid-insulated bus placed outside the circuit breaker tank and connected to the connection conductor via a connection bushing; and an instrument current transformer attached to the solid-insulated bus.
Claims10
A gas-insulated switchgear including a circuit breaker tank storing a circuit breaker, and a bus tank storing a bus, the gas-insulated switchgear comprising:
- a connection electrical conductor connected to two or more electrical power cables, for each phase, inside the circuit breaker tank;
- a solid-insulated bus placed outside the circuit breaker tank and connected to the connection electrical conductor via a connection bushing;
- and
- an instrument current transformer attached to the solid-insulated bus, wherein
- the solid-insulated bus includes a solid-insulated bus busbar and a solid-insulated bus adapter electrically connected to the connection electrical conductor via the connection bushing,
- an outer surface of the solid-insulated bus adapter is coated with an electrically conductive surface layer which is grounded, and
- the instrument current transformer is attached to the solid-insulated bus busbar.
4 more elements
Dependencies are inferred from the claim text.