Low-voltage draw-out switchgear is a kind of electrical equipment. The external line of low-voltage draw-out switchgear first enters the main control switch in the cabinet and then enters the sub-control switch, and each branch is set according to its requirements. Such as instruments, automatic control, motor magnetic switches, various AC contactors, etc., some also have high-voltage chamber and low-voltage chamber low-voltage draw-out switchgear, high-voltage buses, such as power plants, etc., and some also have low-cycle load shedding to protect the main equipment.
The main function of low-voltage draw-out switchgear is to stop switching, controlling and maintaining electrical equipment when the power system stops generating, transmitting, distributing and converting electric energy. The components in the low-voltage draw-out switchgear are mainly composed of circuit breakers, disconnectors, load switches, operating mechanisms, transformers and various maintenance and installation.
There are many classification methods of low-voltage draw-out switchgear, such as removable low-voltage draw-out switchgear and fixed low-voltage draw-out switchgear through circuit breaker device; Or according to the different cabinet structures, it can be divided into open low-voltage draw-out switchgear, metal-blocked low-voltage draw-out switchgear, and metal-blocked armored low-voltage draw-out switchgear; According to different voltage levels, it can be divided into high-voltage and low-voltage draw-out switchgear, medium-voltage and low-voltage draw-out switchgear and so on. It is mainly suitable for power plants, substations, petrochemical industry, metallurgical steel rolling, light industry textiles, factories and mines, residential quarters, high-rise buildings and other different places.
