1、高压开关柜内的真空断路器小车在试验位置合闸后，小车断路器无法进入工作位置。(防止带负荷合闸)
1. After closing the vacuum circuit breaker in the high voltage switchgear, the car circuit breaker can not enter the working position. (to prevent the closure of a load with a load)
2、高压开关柜内的接地刀在合位时，小车断路器无法进入工作位置合闸。(防止带接地线合闸)
2. When the ground knife in the high voltage switchgear is in position, the car breaker can't enter the working position. (prevention of a joint with a grounding wire)
3、高压开关柜内的真空断路器在合闸工作时，盘柜前后门用接地刀上的机械与柜门闭锁。(防止误入带电间隔).
3. When the vacuum circuit breaker in the high voltage switchgear is closed, the front and rear door of the cabinet is locked with the machine and the door on the ground knife. (prevent to be misplaced into the charged interval).
4、高压开关柜内的真空断路器在工作时合闸，接地刀无法关合投入。(防止带电合接地线)
4. The vacuum circuit breaker in the high voltage switchgear closes when it works, and the ground knife can not be shut in. (prevent charged joint ground wire)
5、高压开关柜内的真空断路器在工作合闸运行时，无法退出小车断路器的工作位置。(防止带负荷拉刀闸)
5. The vacuum circuit breaker in the high voltage switchgear can not withdraw from the working position of the circuit breaker in the operation of the closing operation. (prevention of load with a knife sluice)