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【英文标准名称】:Distributionautomationusingdistriubutionlinecarriersystems-Mainssignallingrequirements-MVphase-to-phaseisolatedcapacitivecouplingdevice
【原文标准名称】:配电线路载体系统配电自动化.电力线信号要求.MV相间绝缘电容耦合装置
【标准号】:BSEN61334-3-21-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-03-15
【实施或试行日期】:1997-03-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:试验设备;低电压;电力传输;试验条件;阻抗;电气试验;电力系统;控制系统;电气安全;配电;电路;耦合电路;常电压;电网;遥控系统;自动控制系统;数据传输;输电网;通信网;作标记;主信号
【英文主题词】:Automation;Automationsystems;Carrierfrequencyequipment;Carriersystem;Communicationsystems;Couplingequipment;Datatransfer;Distributionlines;Distributionnetworks;Informationprocessing;Interfacesystems;Mediumvoltagenets;Outerconductors;Remotecontroltechnology;Signaldevices;Signaltransmission;Specification(approval);Standardfixtures
【摘要】:Establishesdefinitions,requirementsandmethodsoftestingfordistributedlinecarrier(DLC)systems.
【中国标准分类号】:F21
【国际标准分类号】:33_040_60
【页数】:24P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforResistanceofZipperstoSaltSpray(Fog)
【原文标准名称】:拉链耐盐雾(雾)能力的标准试验方法
【标准号】:ASTMD2059/D2059M-2003(2009)
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:D13.54
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:corrosion;zipper;Acceleratedaging/testing--saltspray(fog)testing;Corrosion--salt-spray(fog)testing;Saltspray(fog)testing;Zippers
【摘要】:Theresistanceofazippertoavarietyofsalineandnon-salineenvironmentscanbeestimatedfromtheamountandnatureofcorrosionproductsandtheireffectonoperability.Resultsofexposuretothesaltsprayaremerelyindicativeofthereactiontoothercorrosiveconditions.Whiletheresultscannotberelatedpreciselytoagivenlengthofexposureinaspecificatmosphere,theyareusefulformeasuringrelativeperformanceunderprescribedconditionsforcontrollingamanufacturingprocess,andformeasuringtheeffectivenessofprotectivecoatings.TestMethodD2059forthedeterminationoftheresistanceofzipperstosaltsprayisconsideredsatisfactoryforacceptancetestingofcommercialshipmentsofzippersbecausethetestmethodisusedextensivelyinthetradeforacceptancetesting.Iftherearedifferencesofpracticalsignificancebetweenreportedtestresultsfortwolaboratories(ormore),comparativetestshouldbeperformedtodetermineifthereisastatisticalbiasbetweenthem,usingcompetentstatisticalassistance.Asaminimum,thetestsamplesshouldbeusedthatareashomogeneousaspossible,thataredrawnfromthematerialfromwhichthedisparatetestresultswereobtained,andthatarerandomlyassignedinequalnumberstoeachlaboratoryfortesting.Othermaterialswithestablishedtestvaluesmaybeusedforthispurpose.Thetestresultsfromthetwolaboratoriesshouldbecomparedusingastatisticaltestforunpaireddata,ataprobabilitylevelchosenpriortothetestingseries.Ifabiasisfound,eitheritscausemustbefoundandcorrected,orfuturetestresultsmustbeadjustedinconsiderationoftheknownbias.Themethod(s)inthestandardalongwiththoseinTestMethodsD2051,D2052,D2053,D2054,D2057,D2058,D2060,D2061,andD2062areacollectionofproventestmethods.Theycanbeusedasaidsintheevaluationofzipperswithouttheneedforathoroughknowledgeofzippers.Theenumeratedtestmethodsdonotprovidefortheevaluationofallzipperproperties.Besidesthosepropertiesmeasuredbymeansoftheenumeratedtestmethodsthereareotherpropertiesthatmaybeimportantforthesatisfactoryperformanceofazipper.Testmethodsformeasuringthosepropertieshavenotbeenpublishedeitherbecausenopracticalmethodshaveyetbeendevelopedorbecauseavalidevaluationoftheinformationresultingfromexistingunpublishedmethodsrequiresanintimateandthoroughknowledgeofzippers.1.1Thistestmethodcoversthedeterminationoftheresistanceofalltypesofzipperstocorrosionandtheirabilitytofunctionproperlyafterexposureofspecifieddurationinaprescribedsaltspray.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthes......
【中国标准分类号】:Y76
【国际标准分类号】:61_040
【页数】:3P.;A4
【正文语种】: