Combination structure mode of switchgear

Switchgear is a kind of electrical equipment, various AC contactors, etc. Some of them are equipped with high-voltage room and low-voltage room switch cabinets, and high-voltage busbars. After the vacuum circuit breaker trolley in the high-voltage switch cabinet is closed at the test position, the high-voltage switch When the vacuum circuit breaker in the cabinet is closing, the back door of the panel is locked with the door of the grounding knife. The switchgear trolley circuit breaker cannot enter the working position. When the grounding knife in the high-voltage switchgear is in the closed position, the trolley is disconnected. The device cannot be closed.

The vacuum circuit breaker in the switch cabinet is closed when it is working, and the grounding knife cannot be put in. When the vacuum circuit breaker in the high voltage switch cabinet is closed and running, the four corners of the cabinet top are equipped with lifting rings for lifting and shipping, and cannot be withdrawn. For the working position of the trolley circuit breaker, the top cover of the cabinet can be removed when needed. The protection level of the cabinet is IP30. The user can also choose between IP20-IP40 according to the requirements of the environment, which is convenient for the assembly and adjustment of the main bus on site.

The assembled structure is adopted. The upper part of the cabinet is a busbar room, the front part is an electrical room, and the rear part is a cable entry and exit room. There are steel plates or insulating plates for isolation between the rooms to ensure safety. The door of the cabinet drawer and the circuit breaker Or the operating handle of the isolation switch is equipped with a mechanical interlock, and the door can only be opened when the handle is in the breaking position. The GCS type low-voltage withdrawable switchgear is used for three-phase AC frequency of 50Hz, rated working voltage of 400V, and rated current of 4000A and below The power supply system is used as the driving force.