ZW32-24 Outdoor High Voltage Vacuum Circuit Breaker
ZW32-24 series outdoor high voltage vacuum breaker is used in Ac 50Hz ,rated voltage 24kv three-phase power system for closing/breaking loadcurrent,overcurrent and short-circuit current. the breaker can equip with reclosing controler to identity break curent characteristics and achievemultiple automatic reclosing or fault isolation. Self-provided PT as a power source,t becomes a smart circuit breaker able to controller with signaloutout ofvoltace and currentThe electronic PT provides power supoly and can complete three-stage composite protection of overcurent delav
inrush current delay,and short-circuit and quick-break. It is more appropriate for rural power grids and locations with frequent operations, and it may be used for protection and control in the substation power distribution system as well as in industrial and mining businesses.
Conditions of work
1. Temperature of ambient air: -40°C to +40°C Daily temperature differential: no more than 25°C per day;
2. Elevation: no more than 2000 meters;
3. The wind speed does not exceed 35 m/s, which is equivalent to 700 Pa on the cylinder's surface;
4. The maximum thickness of the ice is 10 mm.
5. There is no more than 1000W/m2 of sunshine;
6. The level of pollution is below the IV limit;
7. The intensity of the earthquake is no higher than 8 level;
8. No areas that are combustible, explosive, corroded chemically, or vibrate violently;
9. The user and the manufacturer will discuss and decide whether the product use conditions go beyond the aforementioned clauses.
Model and meaning
Rated Parameters Table 1
| Item | Unit | Parameters | ||||
| Rated voltage | KV | 24 | ||||
| Rated insulation level | 1min power frequency withstand voltage | Dry test | KV | 65/79 (isolation break) | ||
| Wet test | 50/64 (isolation break) | |||||
| Auxiliary circuit and control circuit | 2 | |||||
| Lightning impulse withstand voltage (peak value) | 125/145 (isolation break) | |||||
| Rated frequency | Hz | 50 | ||||
| Rated current | A | 630,1250 | ||||
| Rated operating sequence | 0-0.3s-CO-180s-CO | |||||
| Rated short-circuit breaking current | KA | 16 | 20 | 25 | ||
| Rated short-circuit closing current (peak value) | KA | 40 | 50 | 63 | ||
| Rated peak withstand current | KA | 40 | 50 | 63 | ||
| Rated short-time withstand current | KA | 16 | 20 | 25 | ||
| Rated short-circuit duration | S | 4 | ||||
| Rated short-circuit breaking current times | time | 20/25 | ||||
| Rated current breaking times | time | 10000 | ||||
| Closing time | ms | 20~80 | ||||
| Opening time | At maximum operating voltage | ms | 20~80 | |||
| At rated operating voltage | ||||||
| At minimum operating voltage | ||||||
| Full breaking time | time | ≤100 | ||||
| Mechanical life | J | 10000 | ||||
| Closing power | W | 70 | ||||
| Rated input power of energy storage motor | V | ≤70 | ||||
| Rated operating voltage and rated voltage of auxiliary circuit | V | DC, AC 220 | ||||
| Energy storage time at rated voltage | S | ≤8 | ||||
| Overcurrent release | Rated current | A | 5 | |||
| Trip current accuracy | % | ±10 | ||||
After assembly and adjustment, the circuit breaker should meet the requirements of Table 2 Table 2
| Item | Unit | Parameters |
| Contact opening distance | mm | 13±1 |
| Contact overtravel | mm | 3±1 |
| Average opening speed | m/s | 1.5±0.2 |
| Average closing speed | m/s | 0.8±0.2 |
| Contact closing bounce time | ms | ≤3 |
| Three-phase opening synchronism time difference | ms | ≤2 |
| DC resistance of each phase circuit (with disconnector) | μΩ | ≤60(150) |
| Accumulated thickness of allowable wear of moving and static contacts | mm | 3 |
| Phase center distance | mm | 380±1.5 |
| Rated contact spring pressure in closing state | N | 2000±200 |
Rated parameters of disconnect switches used with circuit breakers Table 3
| Item | Unit | Parameters | |
| Rated voltage | mm | 20 | |
| Rated frequency | mm | 50 | |
| Rated current | m/s | 1250 | |
| Rated peak withstand current | m/s | 50 | |
| Rated short-time withstand current | ms | 20 | |
| Rated short-circuit duration | ms | 4 | |
| Mechanical life | μΩ | 2000 | |
| Contact blade rigidity | mm | ≤3 | |
| Contact blade rigidity deflection | mm | ≤2 | |
| Disconnector break distance | N | ≥300 | |
| Disconnector break operating torque | ≤300 | ||
| Contact blade spring pressure | 300±30 | ||
| Rated terminal static mechanical load | Horizontal longitudinal load | 500 | |
| Horizontal lateral load | 250 | ||
| Vertical force | 300 | ||
Outline Drawing
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1. Bottom outgoing line 2. Current transformer 3. Top incoming line 4. Insulating support 5. Vacuum interrupter 6. Wire clamp 7. Flexible connection 8. Insulating pull rod 9. Operating mechanism 10. Box
Controller selection
Smart style optional circular controller(square controller)
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Products real shot
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Contact Us
If you are looking for the manufacturer or supplier of ZW32-24 outdoor high-voltage vacuum circuit breaker, here are contact information:pannie@hdswitchgear.com.Let me know your requirements!
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