Intelligent Outdoor High-Voltage AC Vacuum Circuit Breaker-ZW32-12/T630-20G

Intelligent Outdoor High-Voltage AC Vacuum Circuit Breaker

ZW32-12/T630-20G

The ZW32-12/T630-20G Intelligent Outdoor High-Voltage AC Vacuum Circuit Breaker is an outdoor distribution device with a rated voltage of 12kV and a three-phase AC frequency of 50Hz. It is primarily used for breaking and making load currents, overload currents, and short-circuit currents in power systems. Suitable for applications in substations, rural and urban power grid upgrades, as well as industrial and mining enterprises where frequent operations are required. When used in conjunction with different types of intelligent controllers, it can function as an automatic recloser or intelligent demarcation breaker, and it can achieve distribution network automation.

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Main functions and characteristics

1) Circuit Connection and Disconnection: Reliably connect and disconnect the circuit under normal or fault conditions.

2) Operation Method: Support manual, electric, or remote operation to meet the needs of different scenarios.

3) Overload Protection: Automatically disconnect the circuit when the line current exceeds the rated value to prevent equipment damage.

4) Short-Circuit Protection: Quickly disconnects the circuit in the event of a short-circuit fault to limit the scope of the fault.

5) Ground Fault Protection: Detect ground faults and act swiftly to ensure the safety of the system and personnel.

6) Frequent Operation: Vacuum arc extinction technology makes it suitable for frequent operations and is ideal for applications requiring multiple switching operations.

7) Low Maintenance Cost: The vacuum arc extinction chamber is maintenance-free, and the operating mechanism is simple and reliable, with a low failure rate.

8) Intelligent Functions: Support remote monitoring and operation to achieve distribution automation. Integrated current and voltage monitoring functions facilitate fault diagnosis and analysis.

9) Vacuum Arc Extinction Technology: Use vacuum as the arc extinction medium, offering excellent arc extinction performance and insulation strength. No risk of explosion or fire, ensuring high safety.

10) High Reliability: The vacuum arc extinction chamber has good sealing properties, is unaffected by external environmental conditions, and has a long service life. Both mechanical and electrical life are superior to other types of circuit breakers.

Technical parameter

1. Rated Voltage (kV)

12
2. Rated Current (A)

630
3. 1-minute Power Frequency Withstand Voltage (kV)

1) Dry Test (Phase-to-Phase, Phase-to-Ground/ Break): 42/48
2) Wet Test (Phase-to-Phase, Phase-to-Ground/ Break): 30/36
4. Lightning Impulse Withstand Voltage (kV)

Dry Test(Phase-to-Phase, Phase-to-Ground/ Break):75/85
5. Rated Short-Circuit Breaking Current (kA)

20
6. Rated Short-Circuit Making Current (kA)

50
7. Rated Peak Withstand Current (kA)

50
8. 3S Short-Time Withstand Current (kA)

20
9. Rated Operating Sequence

Open-0.3s Close and Open-180s-Close and Open
10. Rated Number of Short-Circuit Current Breaking Operations (Times)

30
11. Mechanical Life (Times)

10000
12. Contact Gap (mm)

9±1
13. Contact Overrun (mm)

2~3
14. Average Closing Speed (m/s)

0.8±0.2
15. Average Opening Speed (m/s)

1.2±0.2
16. Closing Bounce Time (ms)

≤2
17. Three-Phase Asynchronous Opening Time (ms)

≤2
18. Closing Time (ms)

≤60
19. Opening Time (ms)

≤45
20. Net Weight (kg)

≤120