An indoor switchgear or controlgear arrangement with unmanned operation and maintenance, for use in low, medium, or high voltage, includes: an arrangement of switching devices in an inner housing, which is furthermore provided with an outer housing; and a robot system, acting mainly in the inner housing. At least the switching devices other than maintenance critical parts are withdrawable. The switchgear or controlgear is provided with interlocks in order to prevent a wrong sequence of operation and prevent access to potentially hazardeous compartments. Metallic segregation is provided internally in the inner housing in order to achieve a needed service continuty level.

A switchgear or control gear includes at least one first compartment; a plurality of removable modules; a plurality of main switchgear or control gear components; and a plurality of auxiliary switchgear or control gear components. The plurality of main switchgear or control gear components includes at least one main busbar system, at least one three position linear or rotational movement disconnector, at least one circuit breaker, and at least one cable connection. The plurality of auxiliary switchgear or control gear components includes at least one disconnector drive and at least one circuit breaker drive. The plurality of removable modules are configured to be mounted horizontally within the at least one first compartment at a plurality of horizontal locations. Movement of a removable module from its horizontal location, the movement including a vertical movement, is configured to move the one or more auxiliary components housed in or associated with that module.

A switchgear or control gear includes at least one first compartment; a plurality of removable modules; a plurality of main switchgear or control gear components; and a plurality of auxiliary switchgear or control gear components. The plurality of main switchgear or control gear components includes at least one main busbar system, at least one three position linear or rotational movement disconnector, at least one circuit breaker, and at least one cable connection. The plurality of auxiliary switchgear or control gear components includes at least one disconnector drive and at least one circuit breaker drive. The plurality of removable modules are configured to be mounted horizontally within the at least one first compartment at a plurality of horizontal locations. Movement of a removable module from its horizontal location, the movement including a vertical movement, is configured to move the one or more auxiliary components housed in or associated with that module.

A gas insulated switchgear (GIS) system is provided including at least two separate modules including components of GIS, the at least two separate modules being independent of one another and configured to be assembled into the GIS system at a destination, wherein one or more of the at least two separate modules includes one of cabling and a solid insulated bus bar to connect the GIS system to an electrical power system at the destination. Related cabling modules are also provided.

A gas insulated switchgear (GIS) system is provided including at least two separate modules including components of GIS, the at least two separate modules being independent of one another and configured to be assembled into the GIS system at a destination, wherein one or more of the at least two separate modules includes one of cabling and a solid insulated bus bar to connect the GIS system to an electrical power system at the destination. Related cabling modules are also provided.

Embodiments of the present disclosure provide a switch assembly for a detection unit of a switchgear or controlgear. The switch assembly comprises a shaft rotatably arranged between opposite side walls of a compartment for accommodating an electrical component, the electrical component coupled to at least one connecting busbar of the switchgear; at least one conductive unit, each conductive unit being rotatable about the shaft between an open position and a close position; and at least one coupling mechanism arranged in the compartment and configured to electrically couple the conductive unit to the detection unit, wherein each coupling mechanism is electrically coupled to the respective connecting busbar when the conductive unit is in the close position, and is electrically decoupled from the respective connecting busbar when the conductive unit is in the open position and is grounded, and wherein each coupling mechanism comprises a connecting unit for receiving a terminal of the detection unit positioned outside the compartment. In this way, maintenance or replacement of the detection unit will not affect the airtightness of the compartment. Furthermore, the connecting unit can also be used to receive the terminal of other kind of detection unit, such as terminals of test assemblies.

Embodiments of the present disclosure provide a switch assembly for a detection unit of a switchgear or controlgear. The switch assembly comprises a shaft rotatably arranged between opposite side walls of a compartment for accommodating an electrical component, the electrical component coupled to at least one connecting busbar of the switchgear; at least one conductive unit, each conductive unit being rotatable about the shaft between an open position and a close position; and at least one coupling mechanism arranged in the compartment and configured to electrically couple the conductive unit to the detection unit, wherein each coupling mechanism is electrically coupled to the respective connecting busbar when the conductive unit is in the close position, and is electrically decoupled from the respective connecting busbar when the conductive unit is in the open position and is grounded, and wherein each coupling mechanism comprises a connecting unit for receiving a terminal of the detection unit positioned outside the compartment. In this way, maintenance or replacement of the detection unit will not affect the airtightness of the compartment. Furthermore, the connecting unit can also be used to receive the terminal of other kind of detection unit, such as terminals of test assemblies.

Modular switchgear systems are provided including at least two separate modules including components of switchgear. The at least two separate modules are independent of one another. One of the at least two separate modules is a stationary module and remaining ones of the at least two separate modules are removable such that the remaining ones of the at least two separate modules are configured to engage and/or disengage easily from the stationary module and an electrical power system. Related removable modules are also provided.

Modular switchgear systems are provided including at least two separate modules including components of switchgear. The at least two separate modules are independent of one another. One of the at least two separate modules is a stationary module and remaining ones of the at least two separate modules are removable such that the remaining ones of the at least two separate modules are configured to engage and/or disengage easily from the stationary module and an electrical power system. Related removable modules are also provided.

An electrical connection for medium and high voltage switchgears includes an electrical terminal of a switchgear. An electrical contacting surface of the electrical terminal as first current carrying part is electrically connected with a contacting surface of an external electrical connector part as second current carrying part via a connecting system. The connecting system includes a stretch-bolt function, which is integrated in one of the current carrying parts. The stretch bolt function is provided with a male screw thread at the extending end, which is configured to be screwed into a female threaded hole of the second current carrying part.