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Vacuum Interrupter TD-12KV 1250A 31.5Q2 (JUC2521) from JUCRO Electric

vacuum interrupter accept customized order design for you

Vacuum Interrupter TD-12KV 1250A 31.5Q2 (JUC2521) 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

1250A

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

≤15μΩ

Contacts limit abrasion

3mm

Weight of moving parts

1.2kg

Internal pressure

<1.33*10-3 Pa

Storage life

20 Years

Rated operating sequence

O-0.3s-CO-180s-CO

 

Model No.: TD-12/1250-31.5Q2(JUC2521)

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

1.“*” Rated characteristics to be given on request.

2.” Put in transformer oil or equivalent isolation medium.

3.    Meets or exceeds the electrical endurance requirements of class E2 for IEC62271-100 and BG1984-2014.


Vacuum Interrupter TD-12KV 1250A 31.5Q2 (JUC2521) from JUCRO Electric
vacuum interrupter accept customized order design for you
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Vacuum Interrupter TD-12KV 1250A 31.5Q2 (JUC2521) from JUCRO Electric

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INQUIRY

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©JUCRO electric co., ltd. 

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©JUCRO electric co., ltd. 

    

    

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