Knkong Electric Co.,Ltd
Knkong Electric Co.,Ltd
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Product Introduction
ZW20(ZW32-12 ) Series Outdoor High Voltage Vacuum Circuit Breaker is widely used in the power system of three-phase, which has AC 50Hz and 10~12Kv voltage level. The main function of the equipment is breaking and closing the loading current, and also it can protect electric consumption by tele-control and tell monitor. Meanwhile, ZW32-12 can be used in both Businesses biased and household-biased
.
Normal service condition:
1. Altitude≤2000
2. Ambient temperature: -15℃~+50℃
3. Maximum water vapor pressure:24 hours ≤2.2kpa1 month ≤1.8kpa
4. Wind pressure:≤700pa(34m/s)
5. Earthquake intensity ≤8
6. Ice thickness ≤10mm
7. No fire, explosion danger, chemical corrosion, violent vibration
Technical Parameters
| No. | Item | Unit | Parameter |
| 1 | Rated voltage | KV | 12 |
| 2 | Rated frequency | Hz | 50 |
| 3 | Rated current | A | 630 1250 |
| 4 | Power frequency withstand voltage(DryWet isolation fracture) | KV | 423448 |
| 5 | Lightning shock withstand voltage | KV | 75 |
| 6 | Rated short-circuit breaking current | KA | 2025 |
| 7 | Rated short circuit breaking current breaking times | times | 30 |
| 8 | Rated operating sequence | O-0.3s-CO-180s-CO | |
| 9 | Rated short-circuit closing current | KA | 50 63 |
| 10 | Rated short-time withstand current | 20 25 | |
| 11 | Rated peak value of withstanding current | 50 63 | |
| 12 | Rated short circuit duration | s | 4 |
| 13 | Mechanical endurance | times | 10000 |
| 14 | Contact allowable wear thickness | mm | 3 |
