1、高压配电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 the vacuum circuit breaker car in the high voltage distribution cabinet closes at the test position, the car circuit breaker can not enter the working position. (Preventing Load Closing)
2、高压配电柜内的接地刀在合位时，小车断路器无法进合闸。（防止带接地线合闸）
2. When the grounding cutter in the HV distribution cabinet is in place, the car circuit breaker can not enter and close. (Preventing closing with grounding wire)
3、高压配电柜内的真空断路器在合闸工作时，盘柜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 HV distribution cabinet closes, the machinery on the ground knife on the back door of the cabinet closes with the cabinet door. (Preventing incorrect entry into live interval).
4、高压配电柜内的真空断路器在蠕动泵 保定建筑设计 保定网站建设 保定网站制作 保定网络公司 保定办公家具 保定轻钢别墅工作时合闸，合接地刀无法投入。（防止带电挂接地线）
4. Vacuum circuit breaker in HV distribution cabinet closes when working, and the closing knife cannot be put into operation. (Preventing live earthing wires)
5、高压配电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. Vacuum circuit breaker in HV distribution cabinet can't exit the working position of car circuit breaker when it is working and closing. (Preventing loaded broach brake)