【英文标准名称】:StandardTestMethodforCoefficientofRetroreflectionofRetroreflectiveSheetingUtilizingtheCoplanarGeometry
【原文标准名称】:利用共面几何学测试反光板反射系数的标准试验方法
【标准号】:ASTME810-2003(2008)
【标准状态】:现行
【国别】:美国
【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】:E12.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:coefficientofretroreflection;light&x2014;transmissionandreflection;retroreflection/retroreflectors;retroreflectivesheeting;Color--retroreflection/retroreflectors;Lighttransmissionandreflection;Reflectivesheeting
【摘要】:Measurementsmadebythistestmethodarerelatedtovisualobservationsofretroreflectivesheetingasseenbythehumaneyewhenilluminatedbytungsten-filamentlightsourcessuchasamotorvehicleheadlamp.Thevaluesdeterminedrelatetothevisualeffectsforagivengeometricconfigurationasspecifiedbytheuserofthetestmethod.Thistestmethodhasbeenfoundusefulfortestsatobservationanglesbetween0.1and2.0x00B0;(observationanglesbetween0.1x00B0;and0.2x00B0;maybeachievedbycarefuldesignofsourceandreceiverapertureconfiguration),andatentranceanglesupto60x00B0;.Ithasbeenusedtodeterminecoefficientofretroreflectionvaluesaslowas0.1cdx00B7;lxx2212;1x00B7;mx2212;2,butforvalueslessthan1cdx00B7;lxx2212;1x00B7;mx2212;2specialattentionmustbegiventotheresponsivityofthereceiverandtotheeliminationofverysmallamountsofstraylight.1.1Thistestmethoddescribesaninstrumentmeasurementoftheretroreflectiveperformanceofretroreflectivesheeting.1.2Theuserofthistestmethodmustspecifytheentranceandobservationanglestobeused,andmayspecifytherotationangles.1.3Thistestmethodisintendedasalaboratorytestandrequiresafacilitythatcanbedarkenedsufficientlysothatstraylightdoesnotaffectthetestresults.Thetestingapparatusmustbeabletoachievethecoplanargeometry.1.4PortableandbenchretroreflectionmeasuringequipmentmaybeusedtodetermineRAvaluesprovidedthegeometryandappropriatesubstitutionstandardreferencepanels,measuredinaccordancewiththistestmethod,areutilized.InthiscasethemethodsofProcedureBinPracticeE809apply.AdditionalinformationontheuseofportableretroreflectometersmaybefoundinTestMethodE1709.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N30
【国际标准分类号】:17_180_20
【页数】:8P.;A4
【正文语种】:英语


【英文标准名称】:Electricalaccessories--Cablereelsforhouseholdandsimilarpurposes
【原文标准名称】:电气附件.家用和类似用途的电缆盘
【标准号】:JISC8284-2000
【标准状态】:现行
【国别】:日本
【发布日期】:2000-07-20
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonElectricityTechnology
【标准类型】:()
【标准水平】:()
【中文主题词】:性能试验;民用电力设备;电缆连接件;延伸电缆
【英文主题词】:performancetesting
【摘要】:この規格は,定格電圧が,単相ケープルリールの場合50V以上250V以下.他のすべてのケーブルリールの場合50v以上440V以下で.定格電流が16A以下の非着脱式可とうケーブルが付いた交流専用ケープルリールに適用ずる。
【中国标准分类号】:K31
【国际标准分类号】:29_060_01;29_120_99
【页数】:44P;A4
【正文语种】:日语