The chassis is mainly used for circuit breaker, transformer components bearing withdrawable switchgear, and push it out, as the components and auxiliary bus connection operation. The internal mechanism of chassis and circuit breaker and other cabinet chain work, GB3906 can meet the "five anti" interlocking concrete requirements. The following functions:

1 hand car only in the test / disconnected position or elbow, the circuit breaker can be closed, and the circuit breaker closing, hand cars will not be able to move, thereby preventing the misconnection and load isolation contact occurs.

2, the truck in the work position or leave the test / disconnected position hit around 10mm, the grounding switch will not be closed, to prevent the charged misconnecting grounding switch.

3, grounding switch is closed, the truck can move from the test / disconnected position to the working position, to prevent the grounding switch closing the circuit breaker in the closing position.

4, the chassis of the car into the cabinet, once left the test / isolation position, the car can not be drawn from the cabinet.

Model and its implications:

Locking plate for chassis vehicle：