Patent ID: 11901709
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. 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.