A circuit breaker racking system includes an electrical drive operatively connected to a mechanical racking mechanism that carries the circuit breaker and moves the circuit breaker between a connect position and a disconnect position within a cubicle, and a circuit breaker trip unit that receives remote commands and controls the electrical drive based on the remote commands. A switchgear system including at least one circuit breaker with an integrated auto-racking system is also provided.

A circuit breaker racking system includes an electrical drive operatively connected to a mechanical racking mechanism that carries the circuit breaker and moves the circuit breaker between a connect position and a disconnect position within a cubicle, and a circuit breaker trip unit that receives remote commands and controls the electrical drive based on the remote commands. A switchgear system including at least one circuit breaker with an integrated auto-racking system is also provided.

A circuit breaker racking system includes an electrical drive operatively connected to a mechanical racking mechanism that carries the circuit breaker and moves the circuit breaker between a connect position and a disconnect position within a cubicle, and a circuit breaker trip unit that receives remote commands and controls the electrical drive based on the remote commands. A switchgear system including at least one circuit breaker with an integrated auto-racking system is also provided.

A switching apparatus for electric power distribution grids including: a withdrawable first switching unit having one or more first electric poles; a withdrawable second switching unit having one or more second electric poles and electrically connected ins series with said first switching unit; and a controller implementing control strategies directed to increase the safety of the withdrawal manoeuvres of said first and second switching units.

A substation contains a switchgear or controlgear, in particular at least one low voltage switchgear or controlgear configured for unmanned operation and maintenance. An inner room, where the switchgear or controlgear are located in, is hermetically enclosed by an outer housing. The inner room is locked against the outer housing by an inner, automatically operated door. A robot system is implemented such that the robot system's acting area is extended from the inner room, partly in the area outside the inner room, but inside the outer housing, where spare parts are stored in a spare parts hand over area, for maintenance.

An electrical connection device (200) connected between a main body and a draw-out device of an electrical appliance having a draw-out structure. The electrical connection device comprises: a draw-out device connection assembly (202) being fixed on the draw-out device and electrically connected to inlet and outlet ends of the draw-out device; a main body connection assembly (204) including contact pieces (241, 441, 541) with a clamping mechanism, wherein the clamping mechanism makes the contact pieces (241, 441, 541) close to and clamp main body busbars (208, 408, 508); and a flexible assembly (206) connecting the draw-out device connection assembly (202) and the main body connection assembly (204) to form a conductive path. The contact pieces (241, 441, 541) of the main body connection assembly (204) are offset by adapting to the position deviation of the main body busbars (208, 408, 508), so that the contact pieces (241, 441, 541) close to and clamp the main body busbars (208, 408, 508), and the flexible assembly (206) absorbs the offset of the contact pieces (241, 441, 541) by its own deformation, the offset is not transferred to the draw-out device connection assembly (202). It is further disclosed a linked electrical connection assembly formed by the described electrical connection devices (200) as well as an electrical appliance using the described electrical connection devices (200) or the electrical connection assembly.

A switching device including a switching unit having one or more electric poles and including, for each electric pole, a first power contact and a second power contact along which a line current can circulate and one or more solid-state switches; and a supporting frame adapted to be fixed to a supporting structure and including, for each electric pole, a third power contact and a fourth power contact along which said line current can circulate. The switching unit is reversibly movable, with respect to said supporting frame, between an insertion position and a withdrawn position. The switching unit includes, for each electric pole, at least a hydraulic circuit along which a cooling fluid can circulate to remove heat generated by said solid-state switches. The hydraulic circuit includes a first hydraulic connector and a second hydraulic connector that are coupled with or separated from a corresponding third hydraulic connector and a corresponding fourth hydraulic connector of said supporting frame, when said switching unit is in said insertion position or in said withdrawn position.

A switching device including a switching unit having one or more electric poles and including, for each electric pole, a first power contact and a second power contact along which a line current can circulate and one or more solid-state switches; and a supporting frame adapted to be fixed to a supporting structure and including, for each electric pole, a third power contact and a fourth power contact along which said line current can circulate. The switching unit is reversibly movable, with respect to said supporting frame, between an insertion position and a withdrawn position. The switching unit includes, for each electric pole, at least a hydraulic circuit along which a cooling fluid can circulate to remove heat generated by said solid-state switches. The hydraulic circuit includes a first hydraulic connector and a second hydraulic connector that are coupled with or separated from a corresponding third hydraulic connector and a corresponding fourth hydraulic connector of said supporting frame, when said switching unit is in said insertion position or in said withdrawn position.

A partition cover for a switchgear enclosure includes a main cover with a lip arranged along a first edge of the partition cover, a sliding cover with a second lip arranged along a second edge of the sliding cover, and a locking mechanism. The sliding cover is slidably supported on the main cover. The locking mechanism is fixed to the main cover and operably connected to the sliding cover, the locking mechanism is arranged to lock position of the sliding cover relative to the main cover to fix the partition cover within an interior of a switchgear enclosure. Switchgear enclosures and methods of emplacing and removing partition covers from within switchgear enclosures are also described.

A switching device including a switching unit having one or more electric poles and including, for each electric pole, a first power contact and a second power contact along which a line current can circulate and one or more solid-state switches; and a supporting frame adapted to be fixed to a supporting structure and including, for each electric pole, a third power contact and a fourth power contact along which said line current can circulate. The switching unit is reversibly movable, with respect to said supporting frame, between an insertion position and a withdrawn position. The switching unit includes, for each electric pole, at least a hydraulic circuit along which a cooling fluid can circulate to remove heat generated by said solid-state switches. The hydraulic circuit includes a first hydraulic connector and a second hydraulic connector that are coupled with or separated from a corresponding third hydraulic connector and a corresponding fourth hydraulic connector of said supporting frame, when said switching unit is in said insertion position or in said withdrawn position.