Abstract: A gas-insulated switchgear equipment includes a main bus conduit containing a main bus conductor and disposed substantially horizontally, and a container connected substantially vertically to the main bus conduit at a top portion thereof for accommodating a disconnecting switch unit which is composed of a pair of contact members one of which is to be electrically connected to the bus conductor. Spacers are disposed substantially vertically at predetermined positions in the main bus conduit for defining a gas-filled compartment for the disconnecting switch unit. A post-like insulation support is fixedly mounted on the container of the disconnecting switch unit for securely supporting a stationary conductor mounted on the contact member to be electrically connected to the bus bar. A tulip-like current collector for connecting one end of a branch conductor having the other end connected to the bus conductor and the stationary conductor to each other.

Abstract: An insulating gas-filled disconnecting switch comprises a metallic container filled hermetically with an insulation gas, and a movable electrode and a stationary electrode disposed within the metallic container and electrically insulated from the latter. Means for guiding an arc possibly produced between both electrodes upon separation of the movable electrode from the stationary electrode positively toward a center portion of an opposite end of the stationary electrode, to thereby prevent the arc propagation toward the stationary electrode from reaching the metallic container from the stationary electrode.