TD 12kv 1250A 31.5KA (JUC618) vacuum interrupter for VCB

Product Description

Main technical parameters

Ratedvoltage: *2 KV

Rated current: ***0A

Rated power frequency withstand voltage: *2 KV

Rated lightning impulse withstand voltage: *5 KV

Rated short circuit breaking current: *1.5KA

Rated short circuit making current(peak value): *0KA

Breaking operations under rated short circuit breaking current: *0 times

Rated short time withstand current: *1.5KA

Rated withstand current(peak value): *0KA

Rated duration of short circuit: 4S

Mechanical life: *0,**0 times

Closing force due to bellows and atmosphere: **0±50N

Force required to hold contacts opening at full stroke: **0±*0N

Circuit resistance at lowest rated contacts force:≤*0μΩ

Storage life: *0 years

Limiting abrasion of contacts: 3 mm

 

Mechanical requiements of vacuum circuit breaker

Clearance between opening contacts: *1±1 mm

Average opening speed(Contacts closing position~*5% contacts opening distance):1.1±0.2 m/s

Average closing speed(*0% contacts opening distance~contacts closing position):0.6±0.2m/s

Rated contacts pressure: ***0±**0N

Contacts bouncing duration at closing operation:≤2 ms

Contacts re-bouncing clearance at opening operation:≤2 mm

Synchronism of three phases:≤1 ms