Vacuum Interrupter TD-12KV 1250A 25Q3 (JUC2375) from JUCRO Electric
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Vacuum Interrupter TD-12KV 1250A 25Q3 (JUC2375) for circuit breaker from JUCRO EleCTric
Main Technical Data
Items | Value |
Rated Voltage | 12KV |
Lightning Impulse withstand voltage(peak) | 85KV |
Short time power frequency withstand voltage (1 min) | 48KV |
Rated frequency | 50/60HZ |
Rated current | 1250A |
Rated short time withstand current | 25KA |
Rated duration of short circuit | 4s |
Rated peak withstand current | 63KA |
Rated short circuit breaking current | 63KA |
Rated short circuit breaking current | 25KA |
Rated short circuit current breaking times | 30 Times |
Rated breaking current of single capacitor bank | 630A* |
Rated back to back capacitor bank breaking current | 400A* |
Mechanical life | 10000 Times |
Clearance between opening contacts | 11+/-1mm |
Closing force due to bellow and atmosphere | 110+/-40N |
Force required to hold contacts open at full stroke | 210+/-40N |
Circuit resistance at minimum rated contact force | ≤23μΩ |
Contacts limit abrasion | 3mm |
Weight of moving parts | 1.2kg |
Internal pressure | <1.33*10-3 Pa |
Storage life | 20 Years |
Rated operating sequence | O-0.3s-CO-180s-CO |
Model No.: TD-12/1250-25Q3(JUC2375)
Mechanical requirements of vacuum circuit breaker
Items | Value |
Average opening speed | 1.1±0.2m/s |
Average closing speed | 0.6±0.2m/s |
Contacts bouncing duration at closing operation | ≤2ms |
Synchronism of contact closing and opening | ≤1ms |
Rated contact pressure | 2000±300N |
Contact pressure at contact touch point | 1400±300N |
Max re-bounce of contact at opening operation | 2mm |
Over travel during opening | ≤2mm |
1.“*” Rated characteristics to be given on request.
2. Meets or exceeds the electrical endurance requirements of class E2 for IEC62271-100 and BG1984-2014.
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