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METHOD FOR OPENING GAS-BLAST LOAD-BREAK SWITCH AT TIME OF GAS PRESSURE DROP, AND SWITCHING LOCK APPARATUS FOR THE GAS-BLAST LOAD-BREAK SWITCH
METHOD FOR OPENING GAS-BLAST LOAD-BREAK SWITCH AT TIME OF GAS PRESSURE DROP, AND SWITCHING LOCK APPARATUS FOR THE GAS-BLAST LOAD-BREAK SWITCH
PROBLEM TO BE SOLVED: To enable only one-time opening operation in a state where gas pressure drop is displayed (in a switch out of order) at time of gas pressure drop. ;SOLUTION: When a lock member 24 of a lock mechanism 19 positioned at a lock releasing positionn C0 for making a manual switching operation mechanism operable to open or close in a closed situation, where a movable electrode is put in closed state by being connected with a fixed electrode in a switch case airtightly containing an arc-extinguishing gas is shifted into a lock position, where the manual switching operation mechanism is made impossible to operate opening or closing operation at time of gas pressure drop. the lock member 24 is opened after passing the following procedures. That is at first, the lock member 24 is kept at the lock release position as it is, by a stopper member 27 of a lock-retaining member 21 which has moved forward in a shift track M of the lock member 24 to a proceeding position E and after that, in the lock retained state, a movable electrode is put in an open state such that the movable electrode is parted from the fixed electrode by the manual switching operation mechanism, and then the lock member 24 is positioned at the lock position in a lock allowed state in which the stopper member 27 of the lock-retaining member 21 is moved back from the shift track M of the lock member 24 to the evacuated position following the opening operation.;COPYRIGHT: (C)1999,JPO
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机译：解决的问题：在气压下降时显示气压下降（开关故障）的状态下，仅启用一次打开操作。 ;解决方案：当锁定机构19的锁定构件24位于锁定释放位置n C 0 上，以使手动开关操作机构在闭合状态下可操作以打开或关闭时，可动电极处于通过与固定电极连接而处于密闭状态的开关壳体中气密性地包含灭弧气体被切换到锁定位置，从而在气体压力下降时手动开关操作机构无法进行打开或关闭操作。通过以下步骤后，锁定构件24被打开。即，首先，通过锁定保持部件21的止动部件27将锁定部件24原样保持在锁定解除位置，该锁定保持部件21的止动部件27在锁定部件24的变速轨道M中向前进位置移动。 E之后，在锁定保持状态下，将可动电极置于打开状态，以通过手动切换操作机构将可动电极与固定电极分开，然后将锁定构件24定位在锁定位置。在锁允许状态下，锁保持部件21的止动部件27在打开操作之后从锁部件24的移动轨道M移回到撤离位置。版权所有：（C）1999，JPO
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