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.

An electrical device connector includes: a bus bar which includes a hollow portion extending in an axial direction and through holes extending in an axis-orthogonal direction, and which electrically connects a plurality of switchgears to each other; terminal members including bus bar support portions in which the bus bar is inserted, and including electrical device connection portions in which the insulation plugs are inserted and fixed; and stud bolts each having one end fixed to the corresponding switchgear, each extending in the axis-orthogonal direction through the corresponding through hole, and each fixing the corresponding insulation plug at the other end. Gaps are each formed between the corresponding stud bolt and the bus bar so as to allow communication between the hollow portion and an internal space of the corresponding terminal member.

A hermetic portion on the side of a main body portion of a gas insulated switchgear and a hermetic portion of a bushing tank which has polymer bushings connected to the main body portion are configured separately, and electrical connection between the main body portion side and the bushing tank is carried out in an open portion. A mid tank is provided in the rear of the main body portion in which a switching apparatus is housed, and conductor portions which are horizontally led out from the main body portion are led into the mid tank, bent upward, and connected to bushings on the top of the mid tank. Cables are extended downward from the bottom of the bushing tank disposed above the mid tank via a support panel, and in the open portion, the cables are connected to the bushings.

In a connecting device of an electrical apparatus in which a first solid insulator and a second solid insulator each molded as a solid insulator on a periphery of a center conductor are connected to each other via a flexible insulator, a high voltage electrode having an outer diameter larger than those of the center conductors is disposed in the second solid insulator, and a ground electrode having an inner diameter smaller than that of an outer ground layer of the second solid insulator and larger than the outer diameter of the high voltage electrode is disposed in the first solid insulator. Electric field directions at an interface between the first solid insulator and the flexible insulator and at an interface between the second solid insulator and the flexible insulator are directions along the respective interfaces.

An electrical device connector includes: a bus bar which includes a hollow portion extending in an axial direction and through holes extending in an axis-orthogonal direction, and which electrically connects a plurality of switchgears to each other; terminal members including bus bar support portions in which the bus bar is inserted, and including electrical device connection portions in which the insulation plugs are inserted and fixed; and stud bolts each having one end fixed to the corresponding switchgear, each extending in the axis-orthogonal direction through the corresponding through hole, and each fixing the corresponding insulation plug at the other end. Gaps are each formed between the corresponding stud bolt and the bus bar so as to allow communication between the hollow portion and an internal space of the corresponding terminal member.

An apparatus for electrically connecting a first laminated multi-phase busbar to a second laminated multi-phase busbar, each of the first and second laminated multi-phase busbars including a plurality of conducting layers and insulating layers which are arranged between the conducting layers and the conducting layers of the first laminated multi-phase busbar projecting from the insulating layers thereof, forming a first lateral connecting portion with first contact surfaces, and the conducting layers of the second laminated multi-phase busbar projecting from the insulating layers thereof, forming a second lateral connecting portion with second contact surfaces, the apparatus including: a bridging element which includes a plurality of laminated insulating layers and conducting layers having contact surfaces for contacting associated contact surfaces of the first and second lateral connecting portions of the first and second busbar; a first clamping arrangement having clamping plates for mechanically contacting and urging associated opposing first outer clamping sections.

Provided is a gas-insulated switchgear that facilitates additional installation work and achieves reduction in working time in the case of increasing arranged boards in additional installation of open/close devices. A bus tank storing a bus is provided above a circuit breaker tank storing a circuit breaker, the bus is connected to a bus connection bushing provided at a width-direction end of the bus tank, a tank width dimension of the bus tank is smaller than an enclosure width dimension of the gas-insulated switchgear, and a space formed by a difference between the enclosure width dimension and the tank width dimension serves as a connection space for the bus when the gas-insulated switchgear is arranged in a row.

A cable adapter that is operable to electrically couple an existing switchgear cable used for old switchgear to a connection location on new switchgear. The adapter includes an elbow portion that is configured to be electrically coupled to a connector for the switchgear cable and an extension portion that is electrically coupled to the elbow portion. The adapter also includes a cylindrical connection portion electrically coupled to the extension portion and being configured to be electrically coupled to the new switchgear at the proper location. In one embodiment, the elbow portion, the extension portion and the connection portion combine as a single piece member including an internal conductor, a dielectric insulation rubber layer covering the internal conductor and an outer semi-conductive rubber layer covering the insulation layer, where the rubber layers are molded over the conductor.

A solid dielectric deadfront electrical switch assembly having a switch contact assembly. The switch contact assembly can include an upper insulative diaphragm, a male pin contact having an insulating tip and an isolating sleeve, a primary contact, a lower insulative diaphragm, and a female socket contact. The upper insulative diaphragm, isolating sleeve, and insulating tip can assist in electrically isolating the male contact pin when the electrical switch assembly is in an open condition. Further, the upper insulative diaphragm can be separated from the female socket contact, and/or a female-contact insulating sleeve, by a gap chamber that utilizes air as an insulator. The lower insulative diaphragm can be configured to engage a drive rod that is used to axially displace the male pin contact between open and closed positions in a manner that may prevent arcing between the switch contact assembly and a base plate of a switchgear.

A power distribution assembly includes a first conductor having a first conductor end and a first shape in cross-section and a second conductor having a second conductor end and a second shape in cross-section. A splice couples the first conductor end to the second conductor end. An insulative boot has a first opening of the first shape, wherein the insulative boot encompasses the first conductor end. The insulative boot also has a second opening having the second shape, wherein the second opening encompasses the second conductor end. The insulative boot has a cavity between the first end and the second end, wherein the cavity is configured to encompass the splice.