Primary and Secondary Integrated Pole-Mounted Circuit Breaker-ZW32-12/T630-20, ZT-F30Z

Primary and Secondary Integrated Pole-Mounted Circuit Breaker

ZW32-12/T630-20, ZT-F30Z

The 10kV Primary and Secondary Integrated Pole-Mounted Circuit Breaker is a new type of distribution equipment that combines primary and secondary equipment. It is mainly used for segmenting and interconnecting the main lines of 10kV distribution networks and is particularly suitable for distribution systems that require high reliability and adaptability. This device integrates advanced technologies such as electronic voltage sensors, electronic current sensors, energy metering modules, and high-speed fault transient waveform recording, achieving the function of "adaptive comprehensive local automation". Its independence from the main station and communication allows it to operate effectively in remote or poorly communicated areas, enhancing the overall reliability and automation level of the distribution system.

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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. Number of Rated 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