According to the installation mode of circuit breaker

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

(1) Removable or handcart type (represented by Y): it means that the main electrical components (such as circuit breaker) in the cabinet are installed on the withdrawable handcart. Because the handcart cabinet has good interchangeability, it can greatly improve the reliability of power supply. The commonly used handcart types include isolation handcart, metering handcart, circuit breaker handcart, Pt handcart, capacitor handcart and used variable handcart, such as kyn28a-12.

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

By installation location

It can be divided into indoor and outdoor according to the installation location

(1) For indoor use (n); Indicates that it can only be installed and used indoors, such as kyn28a-12 switch cabinet;

(2) For outdoor use (indicated by W); Indicates that it can be installed and used outdoors, such as XLW switch cabinet.

According to cabinet structure

According to the cabinet structure, it can be divided into four categories: metal enclosed armored switchgear, metal enclosed Bay switchgear, metal enclosed box switchgear and open switchgear

(1) Metal enclosed armored switchgear (represented by letter K) is a metal enclosed switchgear whose main components (such as circuit breaker, transformer, bus, etc.) are respectively installed in grounded compartments separated by metal partitions. Such as kyn28a-12 high voltage switchgear.

(2) Metal enclosed Bay switchgear (represented by letter J) is similar to armored metal enclosed switchgear. Its main electrical components are also installed in separate compartments, but it has one or more non-metallic partitions meeting a certain degree of protection. Such as jyn2-12 high voltage switchgear.

(3) Metal enclosed box switchgear (represented by the letter X) the enclosure of the switchgear is metal enclosed switchgear. Such as xgn2-12 high voltage switchgear.

(4) Open switch cabinet, without protection level requirements, and part of the shell is open switchgear. Such as GG-1A (f) high voltage switch