+86-577-62697170
+86-577-62697170
+86-577-62697170
fastest growing factory 12kv vacuum circuit breaker
ZW32-12 type miniaturization of outdoor high vacuum circuit breaker (hereinafter referred to as the circuit breaker) is three-phase ac frequency 50Hz, rated voltage of 7.2-12kV outdoor high voltage switch equipment . Circuit breaker meet the national GB1984 the high-voltage ac breaker and professional standard JB3855 “3.6~40.5 kV voltage vacuum circuit breaker outdoor exchange” and relevant IEC standard. For industrial enterprise, power plants and substation of electrical equipment for control and protection with, and rural power grid frequent operation place. Circuit breaker has repeatedly open circuit and fast reclose ability.
Model description
Environmental conditions
1,Environmental temperature: no high than 40℃, no less than -40℃.
2,Air relative humidity: day average no greater than 95%, on average less than 90%.
3,The altitude does not exceed 2000m.
4,Wind pressure not more than 700Pa(equivalent to wind speed 34m/s)
5,Seismic intensity not more than eight level.
6,No fire, explosion, serious filthy, chemical corrosion and violent vibration of places.
7,If the customers have other special requirements, can be in order to put forward , our company can offer most satisfied.
Technical parameters
| Item | Description | Unit | Data | ||
| 1 | Rated voltage | KV | 12 | ||
| 2 | Rated insulation level | 1min withstand voltage | Dry | KV | 42 |
| Wet | 34 | ||||
| Lightning impulse withstand voltage(peak) | 75 | ||||
| 3 | Rated current | A | 630 400 200 | ||
| 4 | Rated break current on shorting | KA | 20 16 12.5 | ||
| 5 | Rated operating sequence | OC-0.3s-CO-180S-CO | |||
| 6 | Open circuit times of rated short dropout current | Times | 30 | ||
| 7 | Rated short circuit making current | KA | 50 | ||
| 8 | Rated peak withstand current | ||||
| 9 | Rated shorting withstand current | KA | 20 | ||
| 10 | Rated duration of short-circuit | S | 4 | ||
| 11 | Opening time(shunt trip) | Max operating voltage | ms | 15~50 | |
| Rated operating voltage | |||||
| Min. operating voltage | 30~60 | ||||
| 12 | Closing time | ms | 25~50 | ||
| 13 | Total breaking time | ≤100 | |||
| 14 | Arcing time | ≤20 | |||
| 15 | Mechanical life | Times | 10,000 | ||
| 16 | Rated input power of energy storge motor | W | 40 | ||
| 17 | Rated operating voltage and secondary circuit rated voltage | V | DC220 110 24 | ||
| AC220 110 24 | |||||
| 18 | Energy storage tome Under rated voltage | S | ≤10 | ||
| 19 | Over-current release | Rated current | A | 5 | |
| The accuracy grade of tripping current | % | ±10 | |||
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