VIB3-12 Indoor Vacuum Circuit Breaker Manufacture in
ChinaGeneral DescriptionVIB3-12 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 switchgearAmbient 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 specificationNameUnitDaterated
voltagekV12rated power frequency withstand voltagekV42rated
lighting impulse withstand voltagekV75rated frequencyHz50rated
currentA63012501600200025003150rated short circuit breaking
currentkA2020 252525 31.531.531.531.531.531.5 4040404040 rated
peak withstand
currentkA5050 636363 808080808080 100100100100100 conductive
circuit resistance of each phaseμΩ≤50≤45≤35≤25Mechanical
characteristic parameter S.N.NameUnitData1distance between
open contactsmm9±12overtravelmm3.5±0.53contact bouncing duration at
closing operationms≤2(1600A Max)
≤3(2000A Min)4out
of simultaneity of CO operation of three ploesms≤25opening
timems20~506closing timems35~707average opening
speedm/s0.9~1.38average closing speedm/s0.4~0.8Our FactoryOur
CertificatesWelcome for enquiry and factory visit!/* January 22,
2024 19:08:37 */!function(){function s(e,r){var
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