Mitsubishi Electric Corporation

Masato Kawahigashi

Hitoshi Sadakuni

Masahiro Fujioka

Yasuhiro Tsukao

Daisuke Yoshida

Takashi Yoshida

Takashi Harada

Yoshinori Shimizu

Daisuke Fujita

Shinichiro Nakauchi

Osamu Kisanuki

Nobuya Nakajima

Tsuyoshi Mori

Yosuke Kuruma

Nobuyuki Shinohara

A gas-insulated switchgear includes: a plurality of circuit breakers extending along a first direction and aligned in rows along a second direction perpendicular to the first direction; one end rising portions raised from one end of the plurality of circuit breakers along a third direction perpendicular to the first direction and the second direction; other end rising portions raised from another end of the plurality of circuit breakers along the third direction; and a plurality of connection busbars connecting the other end rising portions together or connecting the one end rising portions together. Two lines through which the connection busbars pass are set between the one end rising portions and the other end rising portions.

Gas-insulated switchgear

A switchgear includes a first contact capable of reciprocating along a motion axis, and a second contact. The second contact includes a facing unit movable in a first direction from the first contact toward the second contact when the facing unit is pushed in by the first contact, a spaced unit spaced from the axis and urged in a direction toward the axis, and a regulating unit coupled to the facing unit. The spaced unit abuts on the regulating unit to restrict movement of the spaced unit in the direction toward the axis as the facing unit is located in the second direction. The spaced unit is released from abutment on the regulating unit to move in the direction toward the axis into abutment on the first contact as the facing unit moves in the first direction.

Switchgear

A gas-insulated switching apparatus of a three-phase-isolated type includes: two first main buses and extending in parallel at an identical height; a first connection bus interconnecting the first main buses; a first divergence bus diverging downward from the first connection bus; and a first circuit breaker connected to the first divergence bus, wherein a connection portion between the first connection bus and the first divergence bus is disposed at a position lower than the height at which the first main buses extend, and a grounding switch is disposed above the connection portion between the first connection bus and the first divergence bus.

Gas-insulated switching apparatus

A switch includes a fixed contact fixed in a container in which an insulating gas is filled and a movable contact provided to be reciprocatingly movable with respect to the fixed contact and configured to come into contact with and separate from the fixed contact. The switch further comprises a pin provided in the container and configured to move along an arcuate track. A groove in which the pin is fit and is movable is formed in the movable contact. The groove includes a linear groove linearly extending substantially perpendicularly to a moving direction of the movable contact and substantially in parallel to a plane including the moving track of the pin and an arcuate groove that communicates with the linear groove and overlaps the moving track of the pin. The pin moves in the linear groove, whereby the movable contact reciprocatingly moves.

Switch

A current switch includes a blade-shaped movable contact that extends in a radial direction from a rotation center, and that reciprocates such that a free end of the movable contact draws a rotation locus, a fixed contact that includes a plurality of pairs of energizing contacts that come into and out of contact with the movable contact, a movable arcing contact that is provided on the movable contact, fixed arcing contacts that are provided on a pair of energizing contacts, and a pair of permanent magnets that are arranged within the pair of energizing contacts adjacent to the fixed arcing contacts.

Current switch

A gas-insulated switchgear includes: a circuit breaker; a connection bus bar; a first disconnect switch; a second disconnect switch; a line bus bar; a main bus bar; and an abutment. The circuit breaker includes first and second branch outlets provided on a side surface of a cylindrical circuit breaker tank. The connection bus bar has one end connected to the first branch outlet. The first disconnect switch is connected to the other end of the connection bus bar. The second disconnect switch is connected to the second branch outlet. The line bus bar is led out from the second disconnect switch in a horizontal direction. The main bus bar is arranged above the second disconnect switch coaxially with the second branch outlet. The abutment is fixed to a top portion of the second disconnect switch and supports the main bus bar from below.

A switchgear having an electrified conductor accommodated in a tank in which insulating gas is contained includes a fixed contact connected to the electrified conductor, a movable contact installed to be contactable and separable to and from the fixed contact, an insulating rod that is externally extended from inside of the tank while being electrically insulated from the tank and turned by an operation device, and an insert that is extended from an end of the insulating rod toward the movable contact and is rotatably supported by a holding part installed in the electrified conductor. A flange part that is installed in the insert at a position where the holding part opposes the insulating rod and is extended in a substantially right-angle direction with respect to a direction of a rotation axis of the insulating rod is formed on the insert.

Gas-insulated bus is provided with: current-carrying conductor disposed along axial direction of metallic container that is filled with insulating-gas; shield fitting through which passes current-carrying conductor and that has depressed portion formed on portion of barrel-shaped outer surface; insulating support that has second end thereof fixed in depressed portion of shield fitting and has first end thereof fixed to metallic-container, and that supports current-carrying conductor via shield fitting; internal conductor being implanted in second end of insulating support and being, along with second end, positioned in depressed portion and fixed to shield fitting; and contact being attached to inner surface of shield fitting, being disposed in space formed on inside of shield fitting, and that makes contact with current-carrying conductor so as to maintain shield fitting and current-carrying conductor at same electric potential, wherein internal conductor has such shape that internal conductor and shield fitting together form barrel-like profile.

Gas-insulated bus

[Object] A compact gas-insulated switching apparatus in which the space for arranging a gas breaker module may be reduced, and the space for arranging a circuit wiring may be reduced in the vertical direction is proposed. [Means for Resolution] Gas circuit breakers for respective phases of a breaker module have the reference axial lengths having the same length between the first and second vertical planes and arranged so as to extend in the first direction, first circuit wirings for the respective phases of a first circuit wiring module are configured with gas-insulated buses respectively and are extended in parallel to each other along the second direction which is orthogonal to the first direction, the first circuit wirings for the respective phases are positioned at the respective apexes of a right angled isosceles triangle, the first circuit wirings respectively for the phase A and the phase B are positioned at both ends of the short side of the right angled isosceles triangle and are arranged on a third vertical plane positioned between the first vertical plane and the second vertical plane so as to extend in parallel thereto.

In a gas-insulated switchgear provided with three-phase main bus bars consisting of single-phase bus bars arranged in parallel with one another and three-phase circuit breakers that are arranged in parallel with one another in a direction perpendicular to the main bus bar and each have two connecting terminals that are spaced a predetermined distance apart from each other, the main bus bars are arranged between two connecting terminals of each of the circuit breakers.

Growing community of inventors

Tokyo, Japan

Masato Kawahigashi