1.vacuum circuit breaker with IEC standard
2.Rated voltage 12KV
3.Rated current 400/630
4.Rated short-circuit breaking curre
ZW32-12(G) outdoor high voltage vacuum circuit breaker
ZW32-12(G) type outdoor high voltage vacuum circuit breaker is appropriate to 50Hz three phase alternating current system, applicable for power grid breaking, loading current, overload current and circuit breaking current closing in power system. They can be used as segment switch in urban 12kv power grid, also assemble disconnecting switch according to customer’s requirement to be a assembled circuit breaker.
Ambient condition
1 Ambient temperature: max +40°C min –40°C
2 Altitude: ≤2000m
3.Wind pressure: ≤700Pa(equals to wind speed 34m/s)
3 Relative humidity: daily average relative humidity: ≤95%; monthly average relative humidity≤90%
4 Air contamination degree: III degree, far away from corrosive and combustible gas
5 Max daily temperature variation: ≤25°C
6 Earthquake intensity: ≤8 degree
7 The installation should be free from fire, explosion, severe vibration, chemical corrosion and serious pollution
.
Order instruction
Complete model and order quantity of the product
Rated current, rated voltage, rated breaking current, operation voltage
Transform ratio of assembled current mutual inductor
| Main Technical Data | ||||
| Rated voltage | kv | 12 | ||
| Rated frequency | Hz | 50 | ||
| Rated lighting impulse withstand voltage | kv | Interphase or to ground 75,fructure 80 | ||
| Rated short-time power frequency withstand voltage | kv | Interphase or to ground 42,fructure 48 | ||
| Rated current | A | 400 | 630 | 630 |
| Rated short-circuit breaking current | kA | 12.5 | 16 | 20 |
| Rated short-circuit making current | kA | 31.5 | 40 | 50 |
| Rated short-time withstand current | kA | 12.5 | 16 | 20 |
| Rated peak withstand current | kA | 31.5 | 40 | 50 |
| Rated operations of short-circuit breaking current interruption | times | 30 | ||
| Rated operating sequence | 0-0.3-CO-180s -CO(electric mechanism) | |||
| Mechanical life | times | 10000 | ||
| Contact erosion limit | m | 3 | ||
| Rated operating voltage of opening and closing coil | v | AC,DC220 AC,DC110 | ||
| Rated working current of overcurrent and tripping coil | A | 5 | ||
| Current transformer current ratio of two times(normal) | 200/5,400/5,600/5 | |||
| Rated voltage of energy saving motor | v | AC,DC220 AC,DC110 | ||
| Power of energy saving motor | w | ≤200 | ||
| Closing time | ms | 20~40 | ||
| Opening time | ms | 30~60 | ||
| Weight | kg | 85 | ||
Mechanical characteristics adjustment data
Rated contact stroke 9±1mm
Contact overtravel 2±0.5mm
Average opening speed 1.2±0.3m/s
Average closing speed 0.6±0.2m/s
Contact bouncing duration at closing operation ≤2ms
Three-pole simultaneity ≤2ms
Condactive circuit resistance of each phases <80μΩ
