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The ZW32-12 outdoor high-voltage vacuum circuit breaker is an outdoor power distribution switching device with rated voltages of 12kV, 24kV, 40.5kV and a three-phase alternating current of 50Hz or 60Hz.
The circuit breaker is mainly used for breaking and closing the load current, overload current,and shor-circuit current in the power line.
It has the functions of overload and short-circuit protection.
It meets the requirements of control and measurement.
It can also realize the functions of remote control and monitoring.
It is widely applied in the power distribution systems of substations, industrial and mining enterprises for control and operation purposes.
It is especially suitable for places where frequent operations are required.
Enforce standars
GB1984-2003 High voltage AC circuit breaker
DL/T402-2007 High voltage AC circuit breaker ordering technical conditions
IEC60056 High voltage AC circuit breaker
Type description
Normal service condition
Ambient temperature:-40℃ to+40℃;
Altitude: 2000m and below.
The surrounding air can be polluted by dust, smoke, corrosive gases, vapors, or salt mist,and the pollution level is Class III.
The wind speed does not exceed 34m/s (equivalent to 700Pa on the surface of a cylinder).
Special service conditions: The circuit breaker can be used under service conditions different from the normal ones specified above. For special requirements, please negotiate with us.
Special service conditions: The circuit breaker can be used under service conditions different from the normal ones specified above. For special requirements, please negotiate with us.
Performance parameter
| Serialnumber | name | unit | data | ||
| 1 | Rated voltage | kV | 12 | ||
| 2 | Rated current | A | 630 1250 | ||
| 3 | Rated frequency | Hz | 50 | ||
| 4 | Rated insulationlevel | 1min power frequencywithstand voliage | Dry test | 42/48(fracture) | |
| Wet test | kV | 34 | |||
| Secondary loopto ground | 2 | ||||
| Lightning impulse withstand voltage (peak) | 75/85(fracture) | ||||
| 5 | Rated short circuit closing current (peak) | kA | 50 63 | ||
| 6 | Rated short-time withstand current | kA | 20 25 | ||
| 7 | Rated peak withstand current | kA | 50 63 | ||
| 8 | Rated short circuit breaking current breaking times | time | 30 | ||
| 9 | Rated short ircuit duration | S | 4 | ||
| 10 | Rated operating voltage and rated voltage of auxiliary circult | V | DC220, AC220,AC/DC220 | ||
| 11 | Rated operating sequence | points-0.3s-Combine and-180s-Combine and | |||
| 12 | Overcurrent Tripping rated current | A | 5 | ||
| 13 | Mechanical life | time | 10000 | ||
| 14 | Allowable wear accumulation thickness of static and static contacts | mm | 3 | ||
| 15 | Overcurrent Rated current of the trip device | A | 5 | ||
| 16 | Current ratio of current transformer | 200/5400/5600/5 | |||
| 17 | Contact opening distance | mm | 9±1 | ||
| 18 | Contact overreach | mm | 2±0.5 | ||
| 19 | Average opening speed | m/s | 1.2±0.3 | ||
| 20 | Average closing speed | m/s | 0.6±0.2 | ||
| 21 | Opening time | ms | 20~40 | ||
| 22 | Closing time | ms | 30~60 | ||
| 23 | Closing bounce time | ms | ≤2 | ||
| 24 | Tripole combination and switching are different | ≤2 | |||
| 25 | Phase loop DC resistance | μΩ | ≤80(Tape isolation≤150) | ||
