| 摘要 |
The present invention relates to an interlock apparatus of a vacuum circuit breaker and, more particularly, to an interlock apparatus of a vacuum circuit breaker having a circuit breaker body which is installed in a truck and moves to a connected position in which the circuit breaker body is connected to the cradle and moves to a disconnected position in which the circuit breaker body is separated from the cradle, capable of adjusting withdrawal of the circuit breaker body to outside of the cradle, comprising: a lift having a rotation adjusting plate and moving forwards and backwards to allow the rotation adjusting plate to be inserted into the cradle or separated therefrom; and an interlock plate provided within the cradle and rotating according to movement of the rotation adjusting plate so as to be tightly attached to the truck or released from the truck to thus adjust withdrawal of the circuit breaker body to outside of the cradle. In a state in which the lift is not coupled to the cradle, the circuit breaker body cannot be drawn out from the cradle through the interlock plate, and when the lift is coupled to the cradle, the circuit breaker body can be drawn out of the cradle. Thus, when the circuit breaker body is drawn out of the cradle, since the circuit breaker body is supported using the separate list, occurrence of an accident to a worker due to fall of the circuit breaker body can be prevented. |
