High voltage distribution cabinet refers to the electrical products used in power generation, transmission, distribution, energy conversion and consumption of power system to play the role of on-off, control or protection, and the voltage level is 3.6kV ~ 550kV, mainly including high-voltage circuit breaker, high-voltage disconnector and grounding switch, high-voltage load on-off, high-voltage Automatic Reclosing and sectionalizer, high-voltage operating mechanism, high-voltage explosion-proof distribution device and high-voltage transformer Switch cabinet, etc. High voltage switch manufacturing industry is an important part of power transmission and transformation equipment manufacturing industry

　　function

　　The distribution cabinet has the functions of overhead incoming and outgoing lines, cable incoming and outgoing lines, bus connection, etc.

　　classification

　　Press the circuit breaker

　　According to the installation mode of circuit breaker, it can be divided into movable type (handcart type) and fixed type

　　(1) Removable or handcart type (y): indicates that the main electrical components (such as circuit breaker) in the cabinet are installed on the extractable handcart. Due to the good interchangeability of the handcart cabinet, the reliability of power supply can be greatly improved. The common types of handcarts are: isolation handcart, metering handcart, circuit breaker handcart, Pt handcart, capacitor handcart and used transformer handcart, such as kyn28a-12.

　　(2) Fixed type (indicated by G): it means that all electrical components (such as circuit breaker or load switch) in the cabinet are fixed, and the fixed switch cabinet is relatively simple and economical, such as xgn2-10, GG-1A, etc.

　　By location

　　According to the installation location, it can be divided into indoor and outdoor

　　(1) It is used indoors (indicated by n); it means that it can only be installed and used indoors, such as kyn28a-12 switch cabinet;

　　(2) For outdoor use (indicated by W); for outdoor installation and use, such as XLW switch cabinet.

　　The rated current of low-voltage distribution cabinet is AC 50 Hz, and the rated voltage is 380 V, which is used for power conversion and control of power, lighting and distribution. The product has the characteristics of strong breaking ability, good dynamic and thermal stability, flexible electrical scheme, convenient combination, strong seriality and practicability, and novel structure.