Shaanxi Longxiang Electrical Co., Ltd.  

Product Name: Zn28A-12 Series of Indoor Hv Vacuum Circuit Breaker for Sale Model NO.: ZN28-A Certification: VDE, ISO9001-2000, CE, CB, CCC Function: Circuit-Breaker Failure Protection Type: Circuit Breaker Poles Number: 3 Structure: ACB Installation: Open frame Arc-extinguishing Medium: Vacuum Speed: High-Speed Circuit Breaker Operation: Electric Type Breaking Capacity: High Voltage Circuit Breakers Rated Voltage: 12kv Rated Frequency: 50/60Hz Rated Current: 630/1250/1600/2000/2500/3150A Trademark: Longxiang Electric Transport Package: Non-Solid Wooden Case for Export Shipment Specification: IEC: M2-E2-C2 Origin: China Baoji HS Code: 8538900000 Product Description ZN28A-12SeriesofIndoorHVVacuumCircuitBreakerGeneralDescriptionZN28A-12fixedtypeindoorHVvacuumbreakerisusedformanykindsofswitchgearlikeGG-1A(F),XGN2-12(Z).Itiswidelyusedfor12kVvoltagesystemswhichisaccordancewithGB1984-2003standardsStructuralcharacteristics:1.Thisvacuumcircuitbreakeradoptsairinsulation,itcanmeetairdistanceandcreepageundernomalruncondition.2.TheoperatingmechanismcanuseCD10,CD17A,ct19AorCT17Gtypemechanism,theoutletcurvehasgoodadaptationfortherequirementsofvacuuminterrupters.Ithashighreliablewithcharacteristicoflonglifeandeasymaintenance.3.Suitableforvariessitesandtheworkplaceswhichhaverigorousruncondition,especiallysuitableforreconstructionofold-fashionedoilswitch. Applyingambientconditions1.Ambienttemperature:-15~+40ºC.2.Theheightabovesealevel:≤1000m(besidesthespecialrequirements).3.Relativehumidity:theaveragehumidityofadayshouldbenomorethan95%;theaveragehumidityofamonthshouldbenomorethan90%.4.Saturatedvaporpressure:theaveragepressureofadayshouldbenomorethan2.2kPa:the averagepressureofamonthshouldbenomorethan1.8kPa.5.Earthquakeintensity:notexceed8degrees.6.Itshouldbeinstalledintheplaceswithoutfire,explosion,seriousfilth,andchemicalerosionandviolentvibration. Main Technical SpecificationS.NNameUnitData1Rated voltagekV122Rated frequencyHz50/603Rated currentA630630125016001000100016002000125012502000250031504Rated short circuit breaking currentkA202531.5405Rated peak withstand currentkA5063801006Rated short-circuit durationS47Rated power frequencywithstand voltageBetween phases,phase to groundkV42Between gapskV488Rated lightning impulsewithstand voltageBetween phases,phase to groundkV75Between gapskV859Rated operating sequenceO-0.3S-CO-180S-CO O-180S-CO-18S-CO (above 40kA)10Rated breaking current of single capacitor bankA63011Rated breaking current of bank to bank capacitor bankA40012Electrical endurance classCycle3013Mechanical enduranceCycle1000014Clearance between open contactsmm11±115Contact stroke of contactsmm4±116Out of simultaneity of CO operation of three polesms≤217Contact bouncing duration at closing operationms≤218Closing timems50~10019Opening timems20~6020Average closing speedm/s0.6±0.221Average opening speedm/s1.1±0.222Main circuit resistance of each poleμΩ≤40≤3023DC component50%(Max.)Our FactoryPacking & Delivery