ZW28 (A )-12 series high-pressure vacuum circuit breaker. it is 3 phases that exchange 50HZRated voltage for 12KV and high-pressure Distribution device in the following families , install in the regular type switch cupboard mainly, support the industrial and mining enterprises , power plant and turn into protection that Substation make electric facilities and the using of control, and is suitable for making and giving up important load and frequent place .

ZN28-12 structure and characteristic

a.This circuit breaker is killed the arc room to make up by organization , framework and running part , insulating part and vacuum. Vacuum kill arc room and sound support form conductive return circuit , is it two stamp out reason pole link a whole it to have, fixed on framework by the insulator , through lead pole , turn arm , big axle and insulating to deliver a child pole ,etc. transmission part and divide into floodgate spring and organization connect and finish dividing into , shutting movements. B .Have an electromagnetism or spring operating organizations this circuit breaker of oneselves, the structure is compact, movement reliable, debug simple, appearance beautiful, is it is it give up ability better , longe-lived , maintain the simple , small , pollution-free , noise low grade advantage to turn on to have.

ZN28-12 is a regular type special-purpose vacuum circuit breaker of switch cupboard, do not bring to the operating organization except being one's own, its structure, the function and characteristic parameter are essentially identical with ZN28-12 , must mix with the operating organization meeting the mechanical characteristic request of the switch while using, for instance CD17 , CT8 , CT19 ,etc..

service conditions

a , The ambient temperature: -30°C ～ +40°C

b , The altitude : ≦ 3000 m .(if the altitude needs increasing ,the rated insulating level is

c , orresponding added)

d , Amplitude : earthquake degree 8

e , Install the place : There should not be fire , explode dangerously , chemistry is corroded and shakes violently