This vacuum interrupter is designed for 24KV-1250A-20KA vacuum circuit breaker; for the outline drawing, please contact me NOW.
CERAMIC VACUUM INTERRUPTER FOR CIRCUIT-BREAKER
MAIN TECHNICAL DATA TYPE: TD-24/1250-20B(2347)
Data | Unit | Value |
Rated Voltage | kV | 24 |
Lightning Impulse Withstand Voltage (Peak) | kV | 125 |
Short-time (1min) Power-frequency Withstand Voltage | kV | 50/65 |
Rate Frequency | Hz | 50/60 |
Rated Current | A | 1250 |
Rated Short-time Withstand Current | kA | 16 |
Rated Duration of Short-circuit | s | 4 |
Rated Peak Withstand Current | kA | 50 |
Rated Short-circuit Making Current | kA | 50 |
Rated Short-circuit Breaking Current | kA | 20 |
Max. Dc component |
| 40% |
Switch Operations of Rated Short-circuit Breaking Current |
Operations | 20 |
Rated Single Capacitor Bank Breaking Current | A | 400 |
Rated Back-to-back Capacitor Bank Breaking Current | A | 400 |
Mechanical Endurance | Operations | 10000 |
Clearance Between Open Contacts | mm | 13±1 |
Contact Closed Force Due to Bellows and Atmosphere | N | 90±40 |
Counterforce of Contact at Full Stroke | N | 180±40 |
Circuit Resistance at Min. Rated Contact Force | μΩ | ≤25 |
Contact Limit Erosion | mm | 3 |
Mass of Moving Parts | kg | 0.8 |
Internal Gas Pressure | Pa | <1.33×10-3 |
Shelf Life | Year | 20 |
Rated Operating Sequence | O 0.3s - CO 180s CO | |
MECHANICAL DATA OF VACUUM SWITCH EQUIPPED WITH THE INTERRUPTERS
Data | Unit | Value |
Average Opening Speed (first 6mm) | m/s | 1.4±0.2 |
Average Closing Speed (last 6mm) | m/s | 0.8±0.2 |
Contact Bounce Duration at Closing Operation | ms | ≤2 |
Out of Simultaneity of Contact Closing and Opening | ms | ≤1 |
Rated Contact Pressure | N | 1800~2200 |
Max. rebound of contact at opening Operation | mm | 2 |
Overtravel during Opening | mm | ≤2 |
Note 1 Rated characteristics to be given on request;
2 Meets or exceeds the electrical endurance requirements of class E2 for autoreclosing duty per IEC 62271-100 and GB1984-2003
3 Within transformer oil or equivalent isolation medium
