INTERIOR INSPECTION APPARATUS FOR AN EXTRA HIGH PRESSURE GAS INSULATED SWITCHGEAR BREAKER CAPABLE OF REDUCING A DISCHARGE OF SF6 GAS TO THE AIR

摘要

PURPOSE: An interior inspection apparatus for an extra high pressure gas insulated switchgear breaker is provided to improve stability of an electric power system by reducing downtime during inspection.;CONSTITUTION: A valve(1) is mounted on an inspection cover(101) of a breaker body(100). A bellows checking unit(2) is mounted on an upper flange(1a). The bellows checking unit includes a fixing lower frame(3), a changeable upper frame(4) and a screw moving shaft(5). A stopper cover(9) with a hole is formed on the upper side of the changeable upper frame. An image cable terminal connected to endoscope equipment(15) is installed on the stopper cover.;COPYRIGHT KIPO 2012