INTERLOCK DEVICE OF DOOR AND SWITCH-GEAR HAVING THE SAME

摘要

Disclosed is an interlock device of a switchgear door opened only when a system of a switchgear is in a ground state. The disclosed interlock device includes: a rotating plate with an insertion groove in one side of an edge for implementing the break, input, and ground states of a circuit apparatus formed on the switchgear through a rotating operation; an inserting member which is inserted into the insertion groove when the circuit apparatus is in the ground state; a rotating arm with a hook-shaped locking part in one end, rotating according to the inserting operation of the inserting member, and formed in a main frame of the switchgear; and a locking bar formed in the switchgear door to be locked in the locking part when the switchgear door is closed. The locking bar can be removed from the locking part by the rotation of the rotating arm when the inserting member is inserted into the insertion groove.