Description

The Vacuum Interrupter Nylon Embedded Pole employs insulating material to securely combine a vacuum interrupter and the main loop conductive element, forming a single insulating support. This design offers several advantages, including simple assembly, stable weight, high reliability, and robust environmental pollution tolerance.

Advantages:

• High dielectric strength and mechanical strength.
• The housing of the embedded pole is made of fire-retardant nylon, enhancing its strength.
• Provides excellent protection for the vacuum interrupter against moisture, dust, and external damage.
• Suitable for various climatic conditions and site altitudes.
• Highly reliable with an extended service life.
• Easy assembly on circuit breakers.
• Maintains the highest quality standards.
• Maintenance-free.
• Efficiently enhances dielectric strength without using greenhouse gases.

Main Technical Data:

1. Rated Voltage: 12kV
2. Rated Current: 630A/1250A
3. Rated Frequency: 50Hz
4. Rated Short-Circuit Breaking Current: 20KA/25KA/31.5kA
5. Breaking Operations of Rated Short-Circuit Breaking Current: 30 times
6. Rated Short-Circuit Making Current: 50KA/80kA
7. Rated Peak Withstand Current: 50KA/80kA
8. Rated Short-Time Withstand Current (4s): 25KA/31.5kA
9. Rated Breaking Current of Single Capacitor Bank: 630A
10. Rated Breaking Current of Back-to-Back Capacitor Bank: 400A
11. Short-Time Power-Frequency Withstand Voltage (1min): 48KV
12. Lightning Impulse Withstand Voltage (Peak): 85KV
13. Circuit Resistance at Rated Contact Force: ≤30µΩ
14. Mechanical Endurance: 30,000 times
15. Contact Closing Force Due to Bellows and Atmosphere: 100±30N
16. Counterforce at Rated Contact Stroke: 200±30N
17. Contact Limit Erosion: 3mm
18. Storage Life: 20 years
19. Partial Discharge: ≤1PC
20. Rated Operating Sequence: 0-0.3s-CO-180s-CO

Mechanical Data of Vacuum Circuit Breaker:

1. Rated Contact Stroke: 9±1mm
2. Overrun: 3.5±0.5mm
3. Average Opening Speed: 1.1±0.2m/s
4. Average Closing Speed: 0.6±0.2m/s
5. Rated Contact Pressure: 3000±200N
6. Contact Bouncing Duration at Closing Operation: ≤2ms
7. Out of Simultaneity of Contact Closing and Opening: ≤2ms
8. Max. Overtravel: ≤2mm