VIB3-12 Indoor Vacuum Circuit Breaker Manufacture in China

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 a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1