1. ZN28A Series AC indoorhigh-voltage vacuum circuit breaker vcb 10kv 11kv 12kv 13.8kv
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 Vacuum circuit breaker
| No. | Item | Unit | Data |
| 1 | Rated voltage | KV | 12 |
| 2 | Rated insulation voltage | V | 42,75 |
| 3 | Rated current | A | 630,1250,1600,2000,2500,3150 |
| 4 | 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 |
| 10 | Mechanical life-span | times | 10000 |
| 11 | cumulated thickness of the moving and stationary contact | mm | 3 |
| 12 | Oil buffer buffers the journey | mm | 10 |
3. Environmental condition
Relative humidity: daily average ≤95% , monthly average ≤90% ;
Earthquake intensity: 8 degree;
Altitude: ≤1000m;
Ambient temperature: -25°C ~+40°C ;
It should work in occasions without flammable and explosive matter, without corrosive chemical and frequent severe vibration.
4. Technical diagram
5. Factory
6. Certificate
7. Delivery
8. FAQ
1. Technology ensure the quality satisfy international request.
2．Generally we promise one - two years quality guarantee, some products will be extended longer time for life span.
3. For tender cooperation, it is welcome to discuss the detail in between.
4. Some type reports are provided accordingly.
5. Our factory is 250000m2 for production and office.
6. There are four subsidies in our group company. So our whole group company can produce switchgear, power transformer, load break switch, disconnect switch, vacuum/sf6 circuit breaker, fuse, surge arrester, CT PT, Metering unit.
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ZN28A AC Indoor 10KV 11KV 12KV 13.8KV High Voltage Circuit Breaker Images
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