【英文标准名称】:Aerospaceseries-Weldmentsandbrazementsforaerospacestructures-Jointsofmetallicmaterialsbylaserbeamwelding-Qualityofweldments;GermanandEnglishversionEN4678:2011
【原文标准名称】:航空航天系列.航空航天结构焊件和铜焊.激光焊接金属材料接头.焊接质量.德文和英文版EN4678-2011
【标准号】:DINEN4678-2012
【标准状态】:现行
【国别】:德国
【发布日期】:2012-01
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Aerospacetransport;Airtransport;Definitions;Inspection;Joints;Laserbeamwelding;Materials;Metallicmaterials;Quality;Solderedjoints;Solderings;Spacetransport;Specification(approval);Testing;Weldedjoints;Welding;Weldingengineering
【摘要】:
【中国标准分类号】:J33
【国际标准分类号】:25_160_40
【页数】:67P;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodforProof-VoltageTestingofThinSolidElectricalInsulatingMaterials
【原文标准名称】:薄固体电绝缘材料的耐电压测试用标准试验方法
【标准号】:ASTMD1389-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D09.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:电缆;电介质测量;电气工程;电绝缘材料;电气绝缘;电气测试;绝缘件;测试;金属线
【英文主题词】:proof-voltagetesting;thinsolidinsulatingmaterials
【摘要】:Occasionaldielectricdefectsmaybefoundincommerciallyavailableandacceptablethinelectricinsulatingmaterials.Moreoftenthannot,thesematerialsareusedinmultiplelayers.Theprobabilitythatoccasionaldielectricweakspotswillcoincidefromlayertolayerisverysmallbutincreaseswiththefrequencyofoccurrenceofthesedefects.Theproof-voltagetestservestoindicatethefrequencyofoccurrenceofdielectricdefectsandfacilitatestheisolationofareaswherethedefectsareexcessive.Someusesofthinelectricalinsulatingmaterialsrequirethecompleteabsenceofanydielectricdefects.Theproof-voltagetestservestolocatedielectricdefects,makingpossiblerepairorreplacementoftheareainvolvedasmaybedesirable.Intheabsenceofdetectedfaults,thistestmethodisnondestructivetothematerialbeingevaluated,exceptasdiscussedin1.2and4.3.Acriticalpartoftheapparatusandprocedureisthesensitivityandspeedofresponseofthefaultdetectiondevice.Thelatterisusuallyacircuitbreaker.Dependinguponthecharacteristicsofthislattercomponent,itisverylikelythattheresultsobtainedusingdifferentsetsofapparatuswillexhibitsignificantvariability.Itisessentialthatthefaultdetectorrespondonlytofaultcurrentsandthatfaultcurrentsaboveapre-definedvaluealwaysresultinafaultdetectorresponse.Thedesign,adjustment,andoperationoftheapparatusmustavoidbotherroneousfunctioningandanyerroneousnonfunctioningofthefaultdetectorthatmightbetheresultofchargingcurrents,imbalanceofimpedance,orcomponentmalfunction.Theproof-voltagetesthasbeenusedasamanufacturingcontroltestandasanacceptancetesttoguaranteeaminimumlevelofdielectricdefects.Ifthistestmethodisusedasanacceptancetest,takecarethatthefactorsdiscussedin5.4and5.5havebeenconsidered,andifmorethanonesetofapparatusistobeused,thatcomparableresultsareobtainedfromthem.1.1Thistestmethodcoversageneralprocedureforproof-voltagetestingofthinsolidelectricalinsulatingmaterialsatcommercialpowerfrequencies.Itisintendedtoapplyprincipallytoflatmaterialsbutisapplicable,withmodification,toanyformthatpermitscontinuouslypassingthematerialbetweensuitableelectrodes.,1.2Onextremelythinmaterials(usuallylessthan0.05mm(0.002in.)),thetestresultsmaybeinfluencedmorebymechanicaldamagecausedbyconditionsoftestthanbydielectricdefects.Consequently,thistestmethodisnotrecommendedforusewithextremelythinmaterials,unlesspriordeterminationhasestablishedthatthetestresultsarenotinfluencedbymechanicaldamage.1.3Whiletheequipmentandproceduresdescribedinthistestmethodrelatespecificallytotestsmadewithpowerfrequencyacvoltages,similarequipmentandproceduresareusedforproof-voltagetestsusingdcvoltages.Totheextentthatitappliestodctests,thistestmethodcanserveasaguideforpersonsmakingsuchtests.However,onlytestsmadewithpowerfrequencyacvoltagescanbesaidtobeinaccordancewiththistestmethod.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection7.
【中国标准分类号】:K15
【国际标准分类号】:29_035_20
【页数】:4P.;A4
【正文语种】:
基本信息
| 标准名称： | 固色剂M |
| 中标分类： |
化工 >>
化学助剂、表面活性剂、催化剂、水处理剂 >>
化学助剂 |
| ICS分类： |
化工技术 >>
化工产品 >>
表面活性剂及其他助剂
|
| 替代情况： | HG/T 2-381-82 |
| 发布日期： | 1995-04-05 |
| 实施日期： | 1996-01-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 5页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 化工 化学助剂 表面活性剂 催化剂 水处理剂 化学助剂 化工技术 化工产品 表面活性剂及其他助剂