The VS1-12/4000-275 vacuum circuit breaker is a high-performance medium-voltage switchgear component, engineered for demanding industrial and distribution applications requiring reliability, efficiency, and superior safety. This model is designed with a draw-out, making installation and maintenance easy and convenient, and it fits a variety of switchgear configurations.
Key Features of VS1-12/4000 VCB
Item
|
Unit
|
Data
|
|
Rated voltage
|
kV
|
12
|
|
Rated frequency
|
Hz
|
50
|
|
Rated insulation level
|
1 min power frequency withstand voltage
|
kV
|
42
|
Rated lightning impulse withstand voltage
|
kV
|
75
|
|
Rated current
|
A
|
630/1000/1250/1600/2000/2500/3150/4000
|
|
Rated short circuit breaking current
Rated short-time withstand current (virtual value)
|
kA
|
20/25/31.5/40/50
|
|
Rated short circuit making current
Dynamic stability rated current
|
kA
|
50/63/80/100/125
|
|
Rated short-circuit breaking current breaking time
|
Times
|
(above 40kA)
|
|
Rated short-circuit duration
|
S
|
4
|
|
Rated operation sequence
|
|
O-0. 3s-CO-180s-CO,
O-180s-CO-180s-CO(above 40kA)
|
|
Mechanical life
|
Times
|
30000
|
|
Rated breaking current of single capacitor bank
|
A
|
630
|
|
Rated breaking current of back to back capacitor bank
|
A
|
400
|
|
Maximum D.C componen
|
|
50%
|
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