EN 50329-2003 铁路设施.固定式装置.牵引式变压器
时间:2024-05-19 20:52:52 来源: 标准资料网 作者：标准资料网 阅读：8078
【英文标准名称】:Railwayapplications-Fixedinstallations-Tractiontransformers;GermanversionEN50329:2003
【原文标准名称】:铁路设施.固定式装置.牵引式变压器
【标准号】:EN50329-2003
【标准状态】:现行
【国别】:
【发布日期】:2003-09
【实施或试行日期】:2003-09-01
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:铭牌;载流量;电能;多相变压器;试验条件;尺寸选定;铁路设施;变流器电路;整流器变压器;电力牵引;交流电流;电力变换器;阻抗;铁路运输;电路;绝缘;铁路架空输电网;给食器;变压器;试验;短路;直流电流;定义;温升试验;线路图;铁道车辆;供能系统(建筑物);电压;数学计算;电流额定值;固定的;局部交通车辆;额定值等级;短路电力;规范(验收);单相变压器;效率
【英文主题词】:Alternatingcurrent;Circuitdiagrams;Circuits;Convertercircuits;Currentcarryingcapacity;Currentratings;Definition;Definitions;Dimensioning;Directcurrent;Efficiency;Electricconvertors;Electricenergy;Electrictraction;Energysupplysystems(buildings);Feeder;Impedance;Insulations;Localtrafficvehicles;Mathematicalcalculations;Polyphasetransformers;Railtransport;Railwayapplications;Railwaycatenaries;Railwayvehicles;Ratingclass;Ratingplates;Rectifiertransformers;Shortcircuits;Short-circuitpower;Single-phasetransformers;Specification(approval);Stationary;Temperature-risetests;Testing;Testingconditions;Transformers;Voltage
【摘要】:
【中国标准分类号】:S81
【国际标准分类号】:29_180;29_280
【页数】:42P.;A4
【正文语种】:英语
【英文标准名称】:Insulationofserviceinstallations;thermalinsulation
【原文标准名称】:操作装置的隔离.隔热
【标准号】:DIN4140-1-1983
【标准状态】:作废
【国别】:德国
【发布日期】:1983-08
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:设计;绝热材料;技术处理;热环境系统;规范(审批);热绝缘;热工部件;建筑;定义;绝缘;苏格兰帽;管道;尺寸;成套设备;帽(闭塞物)
【英文主题词】:bonnets;plant;thermalinsulatingmaterials;technicalhandling;construction;pipelines;caps(closures);design;heatengineeringcomponents;thermalenvironmentsystems;dimensions;definitions;thermalinsul
【摘要】:
【中国标准分类号】:J27
【国际标准分类号】:27_220
【页数】:8P;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodforEvaluatingtheOxidativeResistanceofCrosslinkedPolyethylene(PEX)TubingandSystemstoHotChlorinatedWater
【原文标准名称】:评估交联聚乙烯(PEX)管件和系统对热加氯水的氧化耐受性的标准试验方法
【标准号】:ASTMF2023-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:F17.40
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Chlorinatedwater;Crosslinkedpolyethylene(PEX)pipe/tube;Hotchlorinatedwater;ORP(oxidationreductionpotential);Oxidationtesting--plastics;PEX/AL/PEXpipe/tube;Thermoplasticpipe/tube/fittings--specifications
【摘要】:Environmentoroxidativetime-to-faildataderivedfromthistestmethod,analyzedinaccordancewithSection13,aresuitableforextrapolationtotypicalend-usetemperaturesandhoopstresses.Theextrapolatedvalue(s)providesarelativeindicationoftheresistanceofthetestedPEXtubingorsystemtotheoxidativeeffectsofhot,chlorinatedwaterforconditionsequivalenttothoseconditionsunderwhichthetestdatawereobtained.Theperformanceofamaterialorpipingproductunderactualconditionsofinstallationanduseisdependentuponanumberoffactorsincludinginstallationmethods,usepatterns,waterquality,natureandmagnitudeoflocalizedstresses,andothervariablesofanactual,operatinghot-and-coldwaterdistributionsystemthatarenotaddressedinthistestmethod.Assuch,theextrapolatedvaluesdonotconstitutearepresentationthataPEXtubeorsystemwithagivenextrapolatedtime-to-failurevaluewillperformforthatperiodoftimeunderactualuseconditions.1.1Thistestmethoddescribesthegeneralrequirementsforevaluatingthelong-term,chlorinatedwater,oxidativeresistanceofcross-linkedpolyethylene(PEX)tubingproducedinaccordancewithSpecificationF876orPEXtubing/fittingsystemsinaccordancewithSpecificationF877usedinhot-and-coldwaterdistributionsystemsbyexposuretohot,chlorinatedwater.Thistestmethodoutlinestherequirementsofapressurizedflow-throughtestsystem,typicaltestpressures,test-fluidcharacteristics,failuretype,anddataanalysis.Note18212;Otherknowndisinfectingsystems(chlorinedioxide,ozone,andchloramines)arealsousedforprotectionofpotablewater.Free-chlorineisthemostcommondisinfectantinusetoday.APPIresearchprojectexaminedtherelativeaggressivenessoffreechlorineandchloraminesonPEXpipes,bothatthesame4.0ppmconcentrationandthesametesttemperatures.Theresultsofthetestingshowedpipefailuretimesapproximately40%longerwhentestedwithchloraminescomparedtotestingwithfreechlorine,atthetestedconditions.Basedontheseresults,thedatasuggeststhatchloraminesarelessaggressivethanfreechlorinetoPEXpipes.1.2Guidelinesandrequirementsfortesttemperatures,testhoopstresses,andothertestcriteriahavebeenestablishedbypriortestingofPEXtubingproducedbythethreemostcommoncommercialmethodsofcross-linking:silane,peroxide,andelectron-beam(seeNote2).OtherrelatedsystemcomponentsthattypicallyappearinaPEXhot-and-coldwaterdistributionsystemcanbeevaluatedwiththePEXtubing.WhentestingPEXtubingandfittingsasasystem,itisrecommendedthattheanticipatedend-usefittingtype(s)andmaterial(s)beincludedinthetestcircuitsinceitisknownthatsomefittingtypesandmaterialscanimpactfailuretimes.Specimensusedshallberepresentativeofthepipingproduct(s)andmaterial(s)underinvestigation.Note28212;Theproceduresdescribedinthistestmethod(withsomemodificationsoftesttemperaturesorstresses,orboth)havebeenusedtoevaluatepipesmanufacturedfrompolybutylene(PB),polyethylene(PE),polypropylene(PP),multilayer(polymer-metalcomposite),copper,andstainlesssteel.1.3ThistestmethodisapplicabletoPEXtubingandsystemsusedfortransportofpotablewatercontainingfree-chlorinefordisinfectingpurposes.Theoxidizingpotentialofthetest-fluidspecifiedinthistestmethodexceedsthattypicallyfoundinpotablewatersystemsacrosstheUnitedStates.1.4Thevaluesstatedininch-pou......
【中国标准分类号】:Q81
【国际标准分类号】:23_040_20
【页数】:9P.;A4
【正文语种】:英语