NF C93-540-4-1-2002 通信电缆.第4-1部分:电缆使用的一般考虑.环境条件和安全性诸方面
时间:2024-05-20 01:49:43 来源: 标准资料网 作者：标准资料网 阅读：8373
【英文标准名称】:Communicationcables-Part4-1:generalconsiderationsfortheuseofcables-Environmentalconditionsandsafetyaspects.
【原文标准名称】:通信电缆.第4-1部分:电缆使用的一般考虑.环境条件和安全性诸方面
【标准号】:NFC93-540-4-1-2002
【标准状态】:现行
【国别】:法国
【发布日期】:2002-01-01
【实施或试行日期】:2002-01-05
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:电信;通信电缆;安全;通信;电缆;核辐射;光学的;安装;对称的;环境条件;环境条件;远程通信;电力设备;装置;传播技术;耐候性试验;耐气候性试验;气候条件;耐化学性;同轴电缆;;;机械性能
【英文主题词】:
【摘要】:
【中国标准分类号】:K13
【国际标准分类号】:33_120_10
【页数】:13P;A4
【正文语种】:其他
【英文标准名称】:StandardPracticeforConductingTestsonSealantsUsingArtificialWeatheringApparatus
【原文标准名称】:用人工风化仪对密封件进行试验的标准实施规范
【标准号】:ASTMC1442-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:C24.40
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:加速老化;光化辐射;耐人工老化加速性;耐久性;曝光
【英文主题词】:acceleratedweathering;actinicradiation;artificialacceleratedweathering;durability;exposure
【摘要】:Thispracticedeterminestheeffectsofactinicradiation,elevatedtemperature,andmoistureonsealantsandtheirconstituentsundercontrolledlaboratoryartificialweathertestconditions.Whenconductingexposuresindeviceswhichuselaboratorylightsources,itisimportanttoconsider(1)howwelltheartificialtestconditionswillreproducepropertychangesandfailuremodescausedbyend-useenvironmentsonthesealantbeingtestedand(2)thestabilityrankingofsealants.RefertoPracticeG151forfullcautionaryguidanceregardinglaboratoryweathering.Becauseofdifferencesinthespectralpowerdistributionsoftheexposuresources(xenonarc,fluorescentUVlamps,andopenflamecarbonarc),aswellasotherconditionsusedinthethreetypesoflaboratoryweatheringtests,includingtemperature,typeandamountofmoisture,andtestcycles,thesethreeproceduresmaynotresultinthesameperformancerankingortypesoffailuremodesofsealants.Further,differentexposuredurationsmayberequiredfortestingtheweatheringperformanceofsealantsbythethreetypesofexposures.Comparisonsshouldnotbemadeoftherelativestabilityofsealantsexposedinthedifferenttypesofapparatus.Variationsinresultsmaybeexpectedwhenoperatingconditionsarevariedwithintheacceptedlimitsofthispractice.Therefore,alltestresultsusingthispracticemustbeaccompaniedbyareportofthespecificoperatingconditionsasrequiredinSection10.RefertoPracticeG151fordetailedinformationonthecaveatsapplicabletouseofresultsobtainedaccordingtothispractice.Nolaboratoryexposuretestcanbespecifiedasatotalsimulationofactualuseconditionsinoutdoorenvironments.TherelativedurabilityofmaterialsinactualuseconditionscanvaryindifferentlocationsbecauseofdifferencesinUVradiation,timeofwetness,relativehumidity,temperature,pollutants,andotherfactors.Resultsobtainedfromtheselaboratoryacceleratedexposurescanbeconsideredasrepresentativeofactualuseexposuresonlywhenthedegreeofrankcorrelationhasbeenestablishedforthespecificmaterialsbeingtestedandwhenthefailuremodeisthesame.Exposureofasimilarmaterialofknownoutdoorperformance,acontrol,alongwiththetestspecimensprovidesforevaluationintermsofrelativedurabilityunderthetestconditions,whichalsogreatlyimprovestheagreementintestresultsamongdifferentlaboratories.Theaccelerationfactorrelatingtheexposuretimeinalaboratoryacceleratedtesttoexposuretimeoutdoorsrequiredtoproduceequivalentdegradationismaterialdependentandcanbesignificantlydifferentforeachmaterialandfordifferentformulationsofthesamematerial.Therefore,theaccelerationfactordeterminedforonematerialcannotbeassumedtobeapplicabletoothermaterials.ResultsofthisprocedurewilldependonthecarethatistakentooperatetheequipmentaccordingtoPracticesG152,G154,andG155.Significantfactorsincluderegulationofthelinevoltage,freedomfromsaltorotherdepositsfromwater,temperaturecontrol,humiditycontrol,whereapplicable,conditionandageoftheburnersandfiltersinxenonarcequipment,andageoflampsinfluorescentUVequipment.Note18212;Additionalinformationonsourcesofvariabilityandonstrategiesf.......
【中国标准分类号】:
【国际标准分类号】:91_100_50
【页数】:6P.;A4
【正文语种】:
Product Code:SAE AS1301
Title:Adapters - Port Connection, Ring Locked Design, Installation and Removal Of
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope: This Aerospace Standard (AS) provides the essential minimum design, installation and removal standard for AS1299, AS1985, AS1986 and AS4099 adapters and is applicable when specified on engineering drawings, or in procurement documents.