Metal-enclosed switchgear
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsShinji Sato, Takao Tsurimoto, Kenichi Koyama, Masahiro Arioka
Life of this patent
Estimating the term…
Abstract
A tank filled with an insulating gas accommodates insulator tubes incorporating vacuum-valve breakers for individual phases. One end of each insulator tube is fixed to the inside of the tank. Each vacuum-valve breaker is installed generally on a common longitudinal axis with the relevant insulator tube in such a manner that its movable electrode rod is directed toward the fixed end of the insulator tube. The insulator tube has as its integral part a bus line fixing portion projecting in a direction intersecting the longitudinal axis of the insulator tube from the proximity of its end opposite to the fixed end to support a bus-side conductor in an insulated fashion.
Claims9
A metal-enclosed switchgear comprising:
- a vacuum-valve breaker;
- an insulator tube;
- a disconnector;
- and
- a metallic enclosure accommodating said vacuum-valve breaker, said insulator tube and said disconnector;
- wherein said insulator tube is fixed at its one end in an axial direction to the inside of said metallic enclosure, said insulator tube having near its other end in the axial direction a bus line fixing portion for supporting a bus-side conductor in an insulated fashion and said vacuum-valve breaker is fixed inside said insulator tube, said vacuum-valve breaker having at its one and other ends in the axial direction a movable electrode rod and a stationary electrode rod, respectively;
- and
- wherein said disconnector includes:
- a blade support member electrically connected to said movable electrode rod by a connecting conductor and fixed to a peripheral part of said insulator tube;
- a bus line terminal fixed and connected to said bus-side conductor;
- and
- a blade swingably attached to said blade support member at one end such that the other end of said blade can be brought into contact with and separated from said bus line terminal, whereby said blade works as a disconnecting device.
Dependencies are inferred from the claim text.