| 摘要 |
PURPOSE:To reject connection of a dummy disconnecting switch upon closing of a circuitbreaker by providing a disconnecting switch body for unlocking a lock lever when interlock is not established and the dummy disconnecting switch, and arranging a check board having a lever tip insertion hole and a connection detecting hole in the disconnecting switch. CONSTITUTION:A disconnecting switch body 22 and an interlock device 23 are mounted on a moving table 21. Upon excitation of an interlock coil 31a, a movable rod 31 rotates to unlock a first interlock lever 29. A second interlock lever 33 serves to disconnect the circuit and to lock the connecting position thus securing a dummy disconnecting switch stably. A check board having an elongated notch to be inserted with the tip of the lever 29 and a connecting position detecting hole is arranged in the dummy disconnecting switch. By such arrangement, connection of the dummy disconnecting switch can be rejected upon closing of a circuitbreaker. |
