Td 12kv 1600a 31.5ka Juc619 Vacuum Interrupter For Vcb

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Main technical parameters
Rated voltage: 12KV
Rated current: 1600A
Rated power frequency withstand voltage: 48KV
Rated lightning impulse withstand voltage: 85KV
Rated short circuit breaking current: 31.5KA
Rated short circuit making current(peak value): 80KA
Breaking operations under rated short circuit breaking current: 30 times
Rated short time withstand current: 31.5KA
Rated withstand current(peak value): 80KA
Rated duration of short circuit: 4s
Mechanical life: 10,000 times
Closing force due to bellows and atmosphere: 120A 50N
Force required to hold contacts opening at full stroke: 190A 50N
Circuit resistance at lowest rated contacts force: a 20I IC
Storage life: 20 years
Limiting abrasion of contacts: 3mm

Mechanical requiements of vacuum circuit breaker
Clearance between opening contacts: 11A 1mm
Average opening speed(Contacts closing position~75% contacts opening distance): 1.1A 0.2 m/s
Average closing speed(30% contacts opening distance~contacts closing position): 0.6A 0.2 m/s
Rated contacts pressure: 3150A 200N
Contacts bouncing duration at closing operation: a 2ms
Contacts re-bouncing clearance at opening operation: a 2mm
Synchronism of three phases: a 1ms
* It Needs additional insultating protection.