1 - 500 piece
group nameVacuum Interrupter
Min Order1 piece
brand nameJUCRO
modelJUC702
payment methodL/C, Western Union, MoneyGram, T/T
update timeWed, 18 May 2022 14:22:52 GMT
Min Order1 piece
Vacuum Interrupter TF 12kv 630A 20KA (JUC702) for load break switch use from JUCRO Electric
Main Technical Parameters
Main technical parameters
Items |
Value |
Rated voltage | 12KV |
Rated current |
630A |
Rated frequency |
50Hz |
Rated power frequency withstand voltage(1 min) | 42kV |
Rated lightning impulse withstand voltage | 75kV |
Rated short time withstand current | 20KA |
Rated withstand current(peak value) | 50KA |
Rated short circuit making current(peak value) | 50KA |
Rated closed-loop breaking current | 630A |
Rated active load breaking current | 630A |
Rated cable charging breaking current | 10A |
Rated duration of short circuit | 4s |
Mechanical life | 10000 times |
Closing force due to bellows and atmosphere | 70±20N |
Force required to hold contacts opening at full stroke | 120±30N |
Circuit resistance at minimum contacts force | ≤40μΩ |
Storage life | 20 years |
Limiting abrasion of contacts | 3mm |
Mechanical requirements of vacuum circuit breaker
Items |
Value |
Clearance between opening contacts | 6±1mm |
Average opening speed(Contacts closing position~75% contacts opening distance) | 1.0±0.2 m/s |
Average closing speed(30% contacts opening distance~contacts closing position) | 0.6±0.2 m/s |
Rated contacts pressure |
900±100N |
Contacts bouncing duration at closing operation | ≤2ms |
Contacts re-bouncing clearance at opening operation |
≤2mm |
Synchronism of three phases | ≤1ms |
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