1.Description of ZN28A Series Indoor AC Vacuum Circuit Breaker
ZN28(A)-12 series vacuum circuit breaker is an indoor high voltage switch with rated voltage 12KV, 3 phases AC 50Hz. This type circuit breaker is vacuum type, it is new style in global market.
This vacuum circuit breaker conforms to the standard GB1984-89 .
This vacuum circuit breaker can match in use with CD17,CD10A Model DC magnetic operating mechanism or CT17 and CT19 model spring energy storage operating mechanism.
2.Parameter of ZN28A Vacuum circuit breaker
|2||Rated insulation voltage||V||42,75|
|Rated short-circuit close current(peak value)||KA||20,31.5,40|
|5||Rated operation order||off--0.3s on and off--180S-on and off|
|6||Rated short-circuit Breaking current times||times||30(50),20(30)|
|7||Rated Impulse withstand voltage||KA||50,80,100|
|8||4S Heat steady e.c.A||20,31.5,40|
|9||all opened and broke time||ms||≤100|
|11||cumulated thickness of the moving and stationary contact||mm||3|
|12||Oil buffer buffers the journey||mm||10|
Relative humidity: daily average ≤95% , monthly average ≤90% ;
Earthquake intensity: 8 degree;
Ambient temperature: -25°C ~+40°C ;
It should work in occasions without flammable and explosive matter, without corrosive chemical and frequent severe vibration.
5. Prodcution line
6. After service
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XIGAO Electricenergy Group Co.,LTD.
Add.: No. 6, Weibei Industrial Park, Xi'an City, Shaanxi Pro., CN. 710600