12KV 1250A HV Vacuum Circuit Breaker With Vacuum Arcing Chamber
12KV 1250A HV Vacuum Circuit Breaker With Vacuum Arcing Chamber
1.Description of HV Vacuum Circuit Breaker
Ambient temperature:-40°C~+40°C
Relative humidity:≤95%or≤90%
Altitude:≤2000m
Wind pressure:≤700Pa(equivalent to wind speed 34m/s)
Seismic intensity:≤8
2.Parameter of HV 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. Prodcution line
6. After service
7. FAQ
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