Domestic vacuum circuit breakers can be roughly divided into three categories: split structure, patchwork structure and integral structure.
The split type structure is completely imitated and designed according to the original low-oil circuit breaker SN10 type. It is mainly used for the transformation of old low-oil circuit breaker switchgear. It is also installed on new switchgear, such as ZN7-10X, ZN13-10X, ZN19-10X, ZN28-10A, etc.
A patchwork structure with independent model mechanisms, which is composed of CD10, CD17, CT8, CT17, CT19 and other mechanisms, vacuum interrupter, rotating shaft, spring, etc. to form a circuit breaker, such as ZN7-10, ZN13-10, ZN19-10, ZN28-10 etc.
Integral structure, which is characterized by a vacuum circuit breaker with no independent mechanism and low transmission loss. This type of circuit breaker is mainly based on imported technology, such as ZN12-10
Differences between integrated structure circuit breakers and split structure/patchwork structure circuit breakers)
The integrated structure circuit breaker generally has one set of four-link transmission system; while the split type structure and the patchwork type structure both have two sets of four-link transmission systems or one set of five-link and one set of four-link transmission system. transmission system.
The contact compression stroke of a circuit breaker with an integral structure is generally 3 to 4 mm; while the contact compression stroke of a circuit breaker with a split structure and a patchwork structure is generally 6 to 10 mm.
The circuit breaker with integral structure is designed based on the overall requirements of the circuit breaker in the control circuit; while the circuit breakers with split structure and patchwork structure are imitated (split type imitates SN10-10) or improvised (split type and operating type). The design is made by putting together the actuating mechanism).