Search This Supplers Products:High voltage electrical productsVACUUM INTERRUPTERVACUUM CONTACTORVACUUM CIRCUIT BREAKERVCB SWITCHGEAR PANELSUBSTATION
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Vacuum Interrupter TD 12kv 630A 25KA (JUC610) for VCB
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 circuit breaking current | 25KA |
Rated short circuit making current(peak value) | 63KA |
Breaking operations under rated short circuit breaking current | 30 times |
Rated single capacitor bank breaking current | 400A |
Rated short time withstand current | 25kA |
Rated withstand current(peak value) | 63kA |
Rated duration of short circuit | 4s |
Mechanical life | 10000 times |
Closing force due to bellows and atmosphere | 70±40N |
Force required to hold contacts opening at full stroke | 120±50N |
Circuit resistance at minimum contacts force | ≤25μΩ |
Storage life | 20 years |
Limiting abrasion of contacts | 3mm |
Weight of moving parts | ≤0.7kg |
Mechanical requirements of vacuum circuit breaker
Items |
Value |
Clearance between opening contacts | 9±1mm |
Average opening speed(Contacts closing position~75% contacts opening distance) | 1.0±0.25 m/s |
Average closing speed(30% contacts opening distance~contacts closing position) | 0.65±0.15 m/s |
Rated contacts pressure |
1300/1600±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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