Patent ID: 8071905
Filing Date: 2011-12-06
Classification: H02B

Abstract:
1. A gas circuit breaker comprising: a grounded tank corresponding to each one of a plurality of electric phases, the grounded tank having a lower portion located on a plane and configured to house a main circuit that includes movable parts of an interrupter, and configured to be filled with an insulating gas; a bushing that extends from the grounded tank to electrically connect the main circuit to outside; an upper housing having a lower portion located substantially on the plane and configured to house an operating mechanism for driving the movable parts of the interrupter; a lower housing configured to house a controlling device that electrically controls operation of the operating mechanism and a gas refilling port for refilling the insulating gas into the grounded tank; a base that supports the grounded tank from which the bushing extends, the upper housing, and the lower housing; a frame that supports the base; and a coupling unit that couples the lower housing relative to the grounded tank such that the lower housing can be moved from a first position lower than the plane to a second position wherein a lower portion of the lower housing is located substantially on the plane.