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【英文标准名称】:Plasticspipingsystemsforhotandcoldwaterinstallations-Polybutylene(PB)-Part3:Fittings
【原文标准名称】:冷热水装置用塑料管道系统.聚丁烯(PB).第3部分:配件
【标准号】:ISO15876-3-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-12
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC138
【标准类型】:()
【标准水平】:()
【中文主题词】:水常规;热水;饮用水;塑料;使用条件;管道;物理性能;可用水;加热系统;塑料管道;冷水管;尺寸;制冷的;特性;建筑物;热环境系统;作标记;水管;管道配件;温水;输水管道;热水集中供暖;使用;管系统;冷水;材料;试验;机械性能;规范(验收);装置;建筑物服务设施;饮用水供给;加热卷板对接焊;化学性质;水;加热设备;饮用水管线;给水;管道装置;公差(测量);定义;聚丁烯;焊接接头;家用(安装)设备;管连接件;配件;管;塑料管;分类
【英文主题词】:Applications;Buildings;Chemicalproperties;Classification;Cold;Coldwater;Coldwaterconduit;Definitions;Dimensions;Drinkingwaterlines;Drinkingwatersupply;Fittings;Heatedsystems;Heatingcoilwelding;Heatingequipment;Hotwater;Hot-watercentralheating;Houseinstallations;Installations;Marking;Materials;Mechanicalproperties;Operatingconditions;PB;Physicalproperties;Pipecouplings;Pipefittings;Pipelineinstallations;Pipelines;Pipes;Pipingsystem;Plasticpipelines;Plasticpipes;Plastictubes;Plastics;Polybutylene;Potablewater;Properties;Serviceinstallationsinbuildings;Servicewater;Specification(approval);Testing;Thermalenvironmentsystems;Tolerances(measurement);Warmwater;Water;Waterpipelines;Waterpipes;Waterpractice;Watersupply;Weldedjoints
【摘要】:ThisPartofENISO15876:specifiesthecharacteristicsoffittingsforpolybutylene(PB)pipingsystemsintendedtobeusedforhotandcoldwaterinstallationswithinbuildingsfortheconveyanceofwater,whetherornotintendedforhumanconsumption(domesticsystems)andforheatingsystemsunderdesignpressuresandtemperaturesaccordingtotheclassofapplication(seeTable1ofENISO15876-1:2003).Thisstandardcoversarangeofserviceconditions(applicationclasses)anddesignpressureclasses.ForvaluesofTD,TmaxandTmalinexcessofthoseinTable1ofPart1,thisstandarddoesnotapply.NOTEItistheresponsibilityofthepurchaserorspecifiertomaketheappropriateselectionsfromtheseaspects,takingintoaccounttheirparticularrequirementsandanyrelevantnationalregulationsandinstallationpracticesorcodes.Italsospecifiestheparametersforthetestmethodsreferredtointhisstandard.InconjunctionwiththeotherpartsofENISO15876(seeForeword)itisapplicabletofittingsmadefromPBandtofittingsmadefromothermaterialswhichareintendedtobefittedtopipesconformingtoENISO15876-2:2003forhotandcoldwaterinstallationsandwherebythejointsconformtotherequirementsofENISO15876-5.ItisalsoapplicabletofittingsmadefromalternativematerialswhichwhenfittedtopipesconformingtoPart2,conformtotherequirementsofPart5ofENISO15876:2003.Thisstandardisapplicabletofittingsofthefollowingtypes:—socketfusionfittings—electrofusionfittings—mechanicalfittings—fittingswithincorporatedinserts
【中国标准分类号】:Q81
【国际标准分类号】:23_040_20;23_040_45
【页数】:12P;A4
【正文语种】:英语


【英文标准名称】:Cablenetworksfortelevisionsignals,soundsignalsandinteractiveservices-Part1:Systemperformanceofforwardpaths
【原文标准名称】:电视信号、声音信号和交互式设备用电缆网络.第1部分:正向传输路径的系统性能
【标准号】:IEC60728-1-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-09
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC100
【标准类型】:()
【标准水平】:()
【中文主题词】:天线系统;音频信号;电缆分布系统;电缆电视;电缆电视系统;架设电缆的分布系统;有线电视;同轴;同轴电缆;兼容性;可混用性;定义;电气工程;交互式的;测量技术;性能;性能要求;额定值;接收天线;信号传输;声音广播;规范(验收);电视广播;电视传输;电视信号
【英文主题词】:Antennasystems;Audiosignals;Cabledistributionsystems;Cabletelevision;Cabletelevisionsystem;Cableddistributionsystems;CATV;Coaxial;Coaxialcables;Compatibility;Definitions;Electricalengineering;Interactive;Measuringtechniques;Performance;Performancerequirements;Ratings;Receptionantennae;Signaltransmission;Soundbroadcasting;Specification(approval);Televisionbroadcasting;Televisiontransmission;Visionsignals
【摘要】:ThispartofIEC60728isapplicabletoanycablenetwork(includingindividualreceivingsystems)havingintheforwardpathacoaxialcableoutputandprimarilyintendedfortelevisionandsoundsignalsoperatingbetweenabout30MHzand3000MHz．Thisstandardspecifiesthebasicmethodsofmeasurementoftheoperationalcharacteristicsofcablenetworkhavingcoaxialcableoutputsinordertoassesslheperformanceofthesesystemsandtheirperformancelimits．AIlrequirementsrefertotheperformancelimits,whichshallbeobtainedbetweentheinput(s)totheheadendorheadendsandanysystemoutletwhenterminatedinaresistanceequaltothenominalloadimpedanceoffhesystem．unlessotherwisespecified．Wheresystemoutletsarenotused,theaboveappliesatthesubscriber'sendofthesubscriber'sfeeder．Alsotherequirementswhichareobtainedbetweentheinput(s)totheheadendorheadendsandanyhomenetworkinterface(HNI)aregiven．NOTE1Methodsofmeasurementdescribedinthisstandardareconsideredasbasic．However,anyequivalentmethodthatensuresatleastthesameaccuracymaybeused．NOTE2Ifthesystemoperatorwishestosubdividethesystemintoanumberofpartsorwishestousedifferenttransmissionmedia(forexample,coaxialcabling,balancedcabling．opticalcabling),theaccumulationofaegraaationsshouldnotexceedthefIguresgiveninthisstandard．NOTE3SystemperformancerequirementsofreturnpathsaswellasspecificmethodsofmeasurementfortheuseofthereturnpathsincablenetworksaredescribedinIEC60728—10．Clause5definesthesystemperformancelimitswhichwill,withanunimpairedinput,(headendinputsignal),producepictureandsoundsignals(atsystemoutlets)wheretheimpairmenttoanysingleparameterwiIIbenotworse．innormaIoperatingconditionsforanyanaloguechanneI,thanGradefouronthefive—gradeimpairmentscalecontainedinITU-BT500-10．Fordigitallymodulatedsignals．thequalityrequirementisaquasi-error-free(QEF)reception．AppropriateperformancerequirementsforthesignalsatthereceivingantennassitearegiyeninClause6inordertoprovideattheinputoftheheadendofthecablenetworkbothanalogueanddigitaltelevisionsignalswithsuitablequality．一Clause7isapplicabletohomenetworks(includingthoseofindividualreceivingsystems)usingcoaxialcables,balancedcablesoropticalcablesandprimarilyintendedfortelevisionsignals,soundsignalsandinteractiveservices,operatingbetweenabout30MHzand3000MHz．Thisclause,consideringthebasicoperationalcharacteristicsofahomenetwork,specifiestherequirementswhichshallbeobtainedatthehomenetworkinterface(HNI)takingintoaccounttheperformancerequirementsgivenatthesystemoutletorattheterminalinput．
【中国标准分类号】:M60
【国际标准分类号】:33_060_40
【页数】:156P;A4
【正文语种】:英语