VIB3 12KV Truck Type Vacuum Circuit Breaker Vacuum Switch with Better Price
General Description
VIB3-12 series of indoor high voltage vacuum circuit breaker is applied to three phase,A.C 50(60)Hz,3.6~24kV electric system. It's used for mining
and industrial enterprise, power plant, substation to switching and dividing load current,overcurrent,fault current, also applied for place with frequent
operation. This series widely used for power station, power system, petrochemical, smelting, subway, airport, buildings project.
Applying ambient conditions and width of matched switchgear
Ambient temperature:max +40ºC, average temperature within 24h should less than 30ºC, min temperature -15ºC;
The height above sea leval:≤1000m,can meet 4500m(need evaluate);
Relative humidity:daily average relative humidity≤95%,monthly average relative humidity≤90%;
Saturated vapour pressure:daily average value≤2.2kPa, monthly average value≤1.8kPa;
ambient air:without obvious dust, smog, corrosive or flammable gas, steam and salt mist pollution;
Width of matched switchgear room:650mm, 800mm, 1000mm.
technical specification
Name |
Unit |
Date |
rated voltage |
kV |
12 |
rated power frequency withstand voltage |
kV |
42 |
rated lighting impulse withstand voltage |
kV |
75 |
rated frequency |
Hz |
50 |
rated current |
A |
630 |
1250 |
1600 |
2000 |
2500 |
3150 |
rated short circuit breaking current |
kA |
20 |
20 |
|
|
|
|
25 |
25 |
25 |
|
|
|
31.5 |
31.5 |
31.5 |
31.5 |
31.5 |
31.5 |
|
40 |
40 |
40 |
40 |
40 |
|
|
|
|
|
|
rated peak withstand current |
kA |
50 |
50 |
|
|
|
|
63 |
63 |
63 |
|
|
|
80 |
80 |
80 |
80 |
80 |
80 |
|
100 |
100 |
100 |
100 |
100 |
|
|
|
|
|
|
conductive circuit resistance of each phase |
μΩ |
≤50 |
≤45 |
≤35 |
≤25 |
Mechanical characteristic parameter
S.N. |
Name |
Unit |
Data |
1 |
distance between open contacts |
mm |
9±1 |
2 |
overtravel |
mm |
3.5±0.5 |
3 |
contact bouncing duration at closing operation |
ms |
≤2(1600A Max) ≤3(2000A Min) |
4 |
out of simultaneity of CO operation of three ploes |
ms |
≤2 |
5 |
opening time |
ms |
20~50 |
6 |
closing time |
ms |
35~70 |
7 |
average opening speed |
m/s |
0.9~1.3 |
8 |
average closing speed |
m/s |
0.4~0.8 |
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