Switch for gas insulated switchgear, and gas insulated switching device
AssigneeMitsubishi Electric Corporation
InventorsKoji SANO, Naoaki INOUE, Masahiro ARIOKA
Life of this patent
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Abstract
A switch includes: switch blades for multiple phases which perform three-position switching among ON, OFF, and ground, using a rotation shaft; and phase-to-phase connection mechanisms which support the switch blades for the phases so as to be insulated among the phases and against the ground, and which connect the switch blades for the phases and cause them to cooperate with each other. The phase-to-phase connection mechanisms include fitting couplings made of an insulating material and each composed of a large-diameter endless frame body and a small-diameter endless frame body which are fitted to each other. The fitting couplings are arranged on the same axial line.
Claims10
A switch for gas insulated switchgear, comprising:
- a switch blade which rotates around a rotation shaft, as a fulcrum, provided at an end of the switch blade, to cause a contact portion formed at another end thereof to contact with or be separated from a main circuit, thereby performing three-position switching among ON, OFF, and ground of the main circuit;
- and
- phase-to-phase connection mechanisms made of an insulating material and divided for respective phases, each phase-to-phase connection mechanism including:
- a blade support portion surrounding and supporting the switch blade such that the contact portion of the switch blade protrudes to outside;
- and a large-diameter endless frame body and a small-diameter endless frame body which are formed in such shapes as to be fitted to each other, and which are arranged so as to be respectively directed toward one end and the other end in a direction of the rotation shaft, with the blade support portion provided therebetween, wherein
- the phase-to-phase connection mechanisms for necessary phases are provided along the rotation shaft, and
- the phase-to-phase connection mechanisms adjacent to each other are connected by a fitting coupling obtained by fitting and coupling the large-diameter endless frame body and the small-diameter endless frame body that are opposed to each other.
Dependencies are inferred from the claim text.