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Vacuum Interrupter TD-12KV 1600A 31.5J1 (JUC2331) from JUCRO Electric

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Vacuum Interrupter TD-12KV 1600A 31.5J1 (JUC2331) 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)	40/48KV
Rated frequency	50/60HZ
Rated current	1600A
Rated short time withstand current	31.5KA
Rated duration of short circuit	4s
Rated peak withstand current	80KA
Rated short circuit breaking current	80KA
Rated short circuit breaking current	31.5KA
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	30000 Times
Clearance between opening contacts	9+/-1mm
Closing force due to bellow and atmosphere	110+/-40N
Force required to hold contacts open at full stroke	190+/-40N
Circuit resistance at minimum rated contact force	≤10μΩ
Contacts limit abrasion	3mm
Weight of moving parts	1.2kg
Internal pressure	<1.33*10^-3Pa
Storage life	20 Years
Rated operating sequence	O-0.3s-CO-180s-CO

Model No.: TD-12/1600-31.5J1(JUC2331)

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	3000±300N
Contact pressure at contact touch point	2100±300N
Max re-bounce of contact at opening operation	2mm
Over travel during opening	≤2mm