Vacuum Interrupter TD 12kv 1250A 31.5KA (JUC618) for VCB

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Hubei Jucro Electric Co.,Ltd

Vacuum Interrupter TD 12kv 1250A 31.5KA (JUC618) for VCB

Categories	Vacuum Interrupter
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Brand	JUCRO
Model	TD 12kv 1250A 31.5KA (JUC618)
Unit Price	US $ 128-130 / piece
FOB port	Shanghai/Ningbo
Terms of Payment	L/C, Western Union, MoneyGram, T/T
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Update Time	2018-12-10

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Detail Information

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

Vacuum Interrupters accept customized order according to technical drawing or samples.

Main Technical Parameters

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	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

Packing & Delivery

Strong package, Safety first.

Inside with foam to support the product, put it in carton or wooden box, fixed it on pallet.

As long as possible to keep the products safe until it arriving customer's warehouse.

Clearly marking label outside of package, customers will be easy to identify their goods.

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