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Overview
The ZW32SR-12 primary and secondary integrated pole-mounted circuit breaker adopts vacuum arc extinguishing principle, permanent magnetic operating mechanism (spring operating mechanism), and integrates microprocessing technology, modern network communication technology and switch manufacturing materials. It is outdoor Power distribution equipment with a rated voltage of 12kV, 50Hz three-phase AC. This product is widely used as a disconnecting or connecting switch in urban power grids, or in rural power distribution systems. The outdoor substation outlet switch can effectively fulfill the functions of traditional reclosers, breaking and closing load currents and short-circuit currents.
Use environment
1. Ambient air temperature: from -40°C to +55°C,with a daily temperature difference: daily change 25K;
2. Altitude: not more than 2000m;
3. Wind speed: not more than 35m/s;
4. Pollution level: Level IV;
5. Installation site: no flammable, explosive or chemically corrosive places;
6. Earthquake intensity not more than 8 degrees;
Technical Parameters
NO. | Item | Unie | Data |
01 | Contact opening distance | mm | 9±1 |
02 | contact overtravel | mm | 2 |
03 | Opening speed | m/s | 1±0.2 |
04 | Closing speed | m/s | 0.6±0.2 |
05 | contact closing bounce time | ms | ≤2 |
06 | Center distance between phases | mm | 340±1.5 |
07 | asynchrony of three-phase opening and closing | ms | 2 |
08 | Conductive circuit resistance of each phase | μΩ | <80 (excluding knife switch and CT) |
09 | Closing time | ms | 30-80 |
10 | Opening time | ms | 23~45 |
11 | weight | kg | About 105 |
Installation Dimensions
Oil&Gas exploited
Automotive Manufacturing
Transportation & Dlistrlbutlon
Manufacture
Industrial Construction
Green Energy
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