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

Price: 106.00 USD
4#Rd Hubei Province,China, Yichang City 443201, Zhijiang City, Hubei, China
Type:
27 August 2018 - 30 August 2020
Ends in 265 days 2 hours 8 minutes
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Business Details
Hubei Jucro Electric CO., LTD.
Hubei Province,China 4#Rd Xiannv,Zhijiang City,Yicahng City, Hubei Province,China, Hubei, Yichang City 443201, Hubei, Hubei, China
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  • Model No::
  • JUC618
  • Product Country of Origin::
  • China
  • Monthly Production::
  • 20000

Main technical parameters

Rated voltage: 12 KV

Rated current: 1250A

Rated power frequency withstand voltage: 42 KV

Rated lightning impulse withstand voltage: 75 KV

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: 20,000 times

Closing force due to bellows and atmosphere: 120±50N

Force required to hold contacts opening at full stroke: 190±50N

Circuit resistance at lowest rated contacts force: ≤20μΩ

Storage life: 20 years

Limiting abrasion of contacts: 3 mm

 

Mechanical requiements of vacuum circuit breaker

Clearance between opening contacts: 11±1 mm

Average opening speed(Contacts closing position~75% contacts opening distance): 1.1±0.2 m/s

Average closing speed(30% contacts opening distance~contacts closing position): 0.6±0.2 m/s

Rated contacts pressure: 3150±200 N

Contacts bouncing duration at closing operation: ≤2 ms

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

Synchronism of three phases: ≤1 ms

 

Items

Value

Rated voltage

12KV

Rated current

1250A

Rated frequency

50Hz

Rated power frequency withstand voltage(1min)

42kV

Rated lightning impulse withstand voltage

75kV

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

20000 times

Closing force due to bellows and atmosphere

120±50N

Force required to hold contacts opening at full stroke

190±50N

Circuit resistance at lowest rated contacts force

≤20μΩ

Storage life

20 years

Limiting abrasion of contacts

3mm

 

 

 

 

 

 

 

 Mechanical requiements of vacuum circuit breaker

Items

Value

Clearance between opening contacts

11±1mm

Average opening speed(Contacts closing position~75% contacts opening distance)

1.1±0.2 m/s

Average closing speed(30% contacts opening distance~contacts closing position)

0.6±0.2 m/s

Rated contacts pressure

3150±200N

Contacts bouncing duration at closing operation

≤2ms

Contacts re-bouncing clearance at opening operation

≤2mm

Synchronism of three phases

≤1ms

27 August 2018 30 August 2020

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