DIN V ENV 41801-5-1992 信息系统互连.转播无连接式网络服务.第5部分:简要表RA51.51(M-IT-02R/21)
作者:标准资料网 时间:2024-05-19 08:25:53 浏览:8805
来源:标准资料网
【英文标准名称】:Informationsystemsinterconnection;relayingtheconnectionless-modenetworkservice;part5:profileRA51.51(M-IT-02R/21);englishversionENV41801-5:1992
【原文标准名称】:信息系统互连.转播无连接式网络服务.第5部分:简要表RA51.51(M-IT-02R/21)
【标准号】:DINVENV41801-5-1992
【标准状态】:作废
【国别】:德国
【发布日期】:1992-09
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:等级协议;情报系统;交换技术;电信;信息处理;传播学;继电器
【英文主题词】:relays;informationsystems;telecommunications;exchangetechnique;informationprocessing;communication;levelprotocol
【摘要】:
【中国标准分类号】:L79
【国际标准分类号】:35_100_30
【页数】:12P;A4
【正文语种】:德语
【英文标准名称】:Insulationcoordinationforequipmentwithinlow-voltagesystems-Part5:Acomprehensivemethodfordeterminingclearancesandcreepagedistancesequaltoorlessthan2mm(IEC60664-5:2003);GermanversionEN60664-5:2003
【原文标准名称】:低压系统内设备的绝缘配合.第5部分:测定电气间隙和爬电距离等于或小于2mm的综合方法
【标准号】:DINEN60664-5-2004
【标准状态】:作废
【国别】:德国
【发布日期】:2004-04
【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】:集成电路;电绝缘材料;电压;调查;电驱动装置;间隙;绝缘配合;电气器具;绝缘材料;余隙距离;低压绝缘子;爬电距离;低压设备;设备;漏电路径;湿度;定义;测量;尺寸选定;低压电器;电气设备;低电压;电气工程;研究方法;额定值;印制电路;绝缘;试验;电子设备及元件;规范(验收)
【英文主题词】:Clearancedistances;Clearances;Creepagedistances;Definition;Definitions;Dimensioning;Electricappliances;Electricalengineering;Electricalequipment;Electricalinsulatingmaterials;Electrically-operateddevices;Electronicequipmentandcomponents;Equipment;Humidity;Insulatingmaterials;Insulationcoordination;Insulations;Integratedcircuits;Leakagepaths;Lowvoltage;Low-voltageequipment;Low-voltageinstallations;Low-voltageinsulator;Measurement;Printedcircuits;Ratings;Researchmethods;Specification(approval);Surveys;Testing;Voltage
【摘要】:
【中国标准分类号】:K31
【国际标准分类号】:29_080_30
【页数】:37P.;A4
【正文语种】:德语
【英文标准名称】:Materialsandarticlesincontactwithfoodstuffs-Plastics-Alternativetestmethodstomigrationintofattyfoodsimulantsbyrapidextractionintoiso-octaneand/or95%ethanol
【原文标准名称】:与食品接触的材料和制品.塑料.快速萃取异辛烷和或95%酒精的脂肪食品塑料析出物渗移量的交替试验方法
【标准号】:BSEN1186-15-2002
【标准状态】:现行
【国别】:英国
【发布日期】:2002-10-14
【实施或试行日期】:2002-10-14
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:物品;触点;酒精;萃取;脂肪;食品检验;食品包装;食品;食品料;浸渍;试验研究;异辛烷;材料;接触食品的材料;材料规范;材料测试;迁移;抗渗移性;塑料;试验媒体;试件;试验
【英文主题词】:Articles;Contact;Ethanol;Extraction;Fats;Foodinspection;Foodpackages;Foodproducts;Foodstuff;Immersion;Investigations;Isooctane;Materials;Materialsincontactwithfood;Materialsspecification;Materialstesting;Migration;Migrationresistance;Plastics;Testmedia;Testpieces;Testing
【摘要】:ThisEuropeanStandardspecifiestwoalternativetestmethods,inthesenseofanextractiontestwitha'moresevere'testcharacter,fortheassessmentoftheoverallmigrationintofattyfoodsimulants.MethodAisbasedonthedeterminationoftheextractionofmigrateablesubstancesfromplasticswhichareintendedtocomeintocontactwithfoodstuffs,bytotalimmersioninnon-polar,iso-octane,and/orpolar,ethanol,solventsdependingonthepolarityofthepackagingmaterial.Accordingtoresultsobtainedbythismethod(see[1],[2],[3],[4],[5])andtakingphysio-chemicalconsiderationsintoaccount,theobtainedextractionefficiencyhas,generally,beenfoundtobeequivalenttoorhigherthanoverallmigrationresultsobtainedunderthetestconditions,10daysat40°C,2hat70°C,1hat100°C,30minat121°Cand30minat130°C.Toensureascompleteaspossibleextractionofthepotentialmigrants,astronginteraction,e.g.swelling,ofthesamplebytheextractionsolventisnecessary.Forthispurpose,iso-octaneisusedasanextractionsolventforplasticsmaterialsandarticlescontainingnonpolarfoodcontactlayers,suchaspolyolefins.Fortestsamplesmadefrompolarfoodcontactplasticssuchaspolyamideandpolyethyleneterephthalate,95%(v/v)aqueousethanolisused.Forpolystyrenes,plasticizedpolyvinylchlorideandotherpolymerswheretheidentificationorpolarityofthepolymerisnotclear,twoparallelextractiontestsshouldbeconductedusingbothoftheproposedextractionsolventsandtakingthehighervalueobtainedastherelevantresult.NOTE1Incaseofmultilayerstructuressuchasplasticslaminatesandco-extrudedplastics,thenatureofthefoodcontactlayerdeterminestheselectionoftheextractionsolvent(s).Thistestmethodshouldonlybeappliedtoflexiblepackagingswhicharelessthan300μminthickness.WhentheresultdoesnotexceedtheallowedoverallmigrationlimitthenthematerialcanbeconsideredtobeincompliancewithECregulations.Ifthetestresultexceedstheallowedoverallmigrationlimitthefollowingoptionsmaybeappliedchronologicallywithrespecttofurthermigrationtesting:1)single-sidedextractiontestusingacell,iftechnicallyfeasible(seeclause4MethodBofthisstandard);2)conventionalmigrationtestusingoliveoilorotherfattyfoodsimulants;NOTE2TheoverallmigrationlimitisspecifiedinCommissionDirective90/128/EEC[7]andtheconditionsoftestinCouncilDirective82/711/EEC[8]anditssubsequentamendments,[9],[10].MethodBisapplicableinthosecaseswherethetotalimmersiontest,EN1186-15MethodA,yieldstotalextractionvaluesthatexceedtheoverallmigrationormaybetechnicallyunsuitable,i.e.inthecaseofmultilayerstructures,suchasplasticslaminatesandco-extrudedfilms.Thistestmethodshouldprimarilyonlybeappliedtoflexiblepackagingswithaphysicalbarrierlayer(forinstanceofaluminiumorothermaterialtopreventpenetrativelossofextractionsolvent)andwhichhaveathinnerfoodcontactlayerthan300μm.IftheresultdoesnotexceedtheallowedoverallmigrationlimitthenthematerialcanbeconsideredtobeincompliancewithECregulations.Ifthetestresultexceedstheallowedoverallmigrationlimitthenthefollowingoptionmaybeappliedwithrespecttofurthermigrationtesting:-conventionalmigrationtestusingoliveoilorotherfattyfoodsimulants.NOTE3MethodsAandBarenotapplicabletotestmaterialsintendedforapplicationsover130°C.NOTE4Testmaterialsintendedforapplicationsover70°Cshouldbecheckedfortheirphysicalsuitabilityattheintendedtimeandtemperatureofuse.
【中国标准分类号】:X08;C53
【国际标准分类号】:67_250
【页数】:20P;A4
【正文语种】:英语
