Patent ID: 6693250
Filing Date: 2004-02-17
Classification: H01H,H02B

Abstract:
A hybrid gas insulation switchgear apparatus comprising:an enclosure in which an insulating gas is sealed; a bushing unit provided for the enclosure; a breaker unit disposed inside the enclosure; a disconnector unit disposed inside the enclosure and including disconnectors to be connected electrically in series to both sides of the breaker unit; an earth switch unit disposed inside the enclosure and including earth switches disposed between the breaker unit and the disconnectors, respectively, and said earth switches being provided with main pole side electrodes disposed on the side of the breaker unit; and a current transformer mounted to the enclosure, wherein: said bushing unit including bushings each having a conductor connected to an electrode of the disconnector on a side opposite to the breaker, said enclosure and said bushing unit defines a space therebetween which sectioned by an insulating member having substantially conical shape, and said electrode disposed on the side opposite to the breaker unit in the disconnector is supported by the insulating member, said enclosure is provided with at least one branch portion, the bushing unit being mounted to the branch portion and at least a set of disconnector and earth switch is accommodated in the branch portion, and two branch portions are provided in different height level with an inclination with respect to an axis of the enclosure.