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PRODUCT

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TianJin
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Name

VI012312L

Summary information
Specification: Vacuum Interrupter VI012312L
Affiliate classification
Description

Specification: Vacuum Interrupter VI012312L

Electrical Data

Rated voltage, 50 Hz

12kV

Rated normal current

1250A

Rated short-circuit breaking current, symm.

31.5kA

Max. DC-component

50%

Rated short-circuit making current

80kA

Rated peak withstand current

80kA

Rated short-time withstand current, 4s

31.5kA

Capacitive switching acc. to GB1984
single 630A,back to back 400A

C2Class

Rated Insulation Level

Rated power-frequency withstand voltage

42/48kV

Rated lightning impulse withstand voltage

75/85kV

Thermal Data

Circuit resistance at lowest rated contact force  

≤13μΩ

Max. permitted temperature at movable stem

170ºC

Electrical Life

Breaking operations of rated short-circuit breaking current

50times

Mechanical Data

Contact stroke

8±1mm

Max. over travel

≤2mm

Maximum rebound during opening

≤2mm

Average opening speed (0-2 mm stroke)

1.2±0.2m/s

Average closing speed (2 mm- contact making)

0.8±0.2m/s

Max. bouncing duration

2ms

Opening and closing non-simultaneity of three phase contacts

≤1ms

Rated added external contact final force

3400±300N

Added external contact force at contact touch point

≥2700N

Closing force due to bellows and atmosphere

80±20N

Force required to hold contacts open at full stroke

150±30N

Contact erosion limit

3mm

Mass of moving contact

0.95kg

Weight of interrupter

4.1kg

Storage life

20years

Mechanical life

30000times

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