Shaanxi Longxiang Electrical Co., Ltd.  

Product Name: Vib3 12kv 1250A Fixed Type Hv Vacuum Circuit Breaker Vcb Vacuum Switch Model NO.: VIB3-12 Certification: VDE, ISO9001-2000, CE, CCC Function: Conventional Circuit Breaker Type: Circuit Breaker Poles Number: 3 Structure: MCCB Installation: Fixed Arc-extinguishing Medium: Vacuum Speed: Normal Type Circuit Breaker Operation: Electric Type Breaking Capacity: Middle Voltage Trademark: Longxiang electric Transport Package: in Non-Solid Wooden Case and Carton Specification: 3P 210mm Origin: China HS Code: 8538900000 Product Description VIB3 12KV 1250A Fixed Type HV Vacuum Circuit Breaker VCB Vacuum SwitchGeneralDescriptionVIB3-12 series of indoor high voltage vacuum circuit breaker is applied to threephase,A.C 50(60)Hz,3.6~24kV electricsystem.It's used for mining and industrial enterprise,power plant,substationto 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 -15ºCThe 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:dailyaveragevalue≤2.2kPa,monthly average value≤1.8kPaambient air:without obviousdust,smog,corrosiveor flammablegas,steam and saltmistpollutionWidth of matched switchgear room:650mm,800mm,1000mmTechnical specificationNameUnitDaterated voltagekV12rated power frequency withstand voltagekV42rated lighting impulse withstand voltagekV75rated frequencyHz50rated currentA63012501600200025003150rated short circuit breaking currentkA202025252531.531.531.531.531.531.54040404040rated peak withstand currentkA5050636363808080808080100100100100100conductive circuit resistance of each phaseμΩ≤50≤45≤35≤25Mechanical characteristic parameterS.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 Certificates