【英文标准名称】:Aerospaceseries-Circuitbreakers,single-pole,temperaturecompensated,ratedcurrents20Ato50A-Part001:Technicalspecification;GermanversionEN2794-001:1999
【原文标准名称】:航空航天系列.额定电流为20A至50A的温度补偿的单极电路断路保护开关.第001部分:技术规范
【标准号】:DINEN2794-001-1999
【标准状态】:现行
【国别】:德国
【发布日期】:1999-08
【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】:多语种的;航天运输;航空航天运输;电气保护设备;作标记;交货条件;航空运输;电气工程;额定电流;名称与符号;飞行器系统;飞行器部件;单极
【英文主题词】:Aerospacetransport;Airtransport;Aircraftcomponents;Circuit-breakers;Connections;Currents;Deliveryconditions;Designations;Dimensions;Electricalengineering;Electricalpropertiesandphenomena;Electricalprotectionequipment;Electricalsystems;Environmentalcondition;Explosion-proof;Marking;Mass;Mechanicalproperties;Multilingual;Properties;Pulloperation;Pushoperation;Pushbuttons;Ratedcurrent;Single-pole;Spacetransport;Specification(approval);Switches;Switchgear;Temperature;Temperature-compensated;Three-pole;Tri-polecircuit-breakers;Weights
【摘要】:Thisdocumentspecifiestherequiredcharacteristicsforsingle-poletemperaturecompensatedcircuitbreakerswithratedcurrentsfrom20Ato50Aforuseinaircraftelectricalsystems,atatemperaturebetween-55?and125?andatamaximumaltitudeofZ=15000m.ItshallbeusedtogetherwithEN2350.#,,#
【中国标准分类号】:V27
【国际标准分类号】:49_060
【页数】:10P.;A4
【正文语种】:德语


【英文标准名称】:StandardTestMethodforHydroxylGroupsUsingReactionwithp-ToluenesulfonylIsocyanate(TSI)andPotentiometricTitrationwithTetrabutylammoniumHydroxide
【原文标准名称】:利用与P-甲苯磺酰异氰酸盐(TSI)的反应和氢氧化四丁基铵的电势滴定法的羟基标准试验方法
【标准号】:ASTME1899-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:E15.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:hydroxylnumber;p-Toluenesulfonylisocyanate;polyacetals;polyols;potentiometrictitration;tetrabutylammoniumhydroxide;Hydroxylgroups;Potentiometrictitration;Tetrabutylammoniumhydroxide;p-Toluenesulfonyl
【摘要】:Hydroxylisanimportantfunctionalgroupandknowledgeofitscontentisrequiredinmanyintermediateandenduseapplications.Thistestmethodisforthedeterminationofprimaryandsecondaryhydroxylgroupsandcanbeusedfortheassayofcompoundscontainingthem.Thistestmethodhasthefollowingadvantagesoverotherhydroxylnumbermethods:Itisrapid(10min),pyridine-free,ambienttemperature,smallsamplesize,applicabletoextremelylowhydroxylnumbers(x003C;1),andisamenabletoautomation.1.1Thistestmethodcoversthedeterminationofhydroxylgroupsattachedtoprimaryandsecondarycarbonatomsinaliphaticandcycliccompoundsandphenols.Itisnotsuitablefordeterminationofhydroxylgroupsattachedtotertiarycarbonatoms.Thistestmethodisapplicabletopolyacetals,temperaturesensitivematerials,highsolidspolymerpolyols,andrigidpolyols.OtheravailabletestmethodslistedinNote1arenotsuitableformanyofthesampletypeslistedabove.1.1.1Thistestmethodiscurrentlyrecommendedforneutralrefinedproducts.Successfulapplicationhasbeenmade,however,tosomein-processsamplesthatcontainanexcessofacidicspecies.Propervalidationmustbeperformed,ofcourse,toshowthattheacidicspecieseitherdoesnotinterfere,orthattheacidicspeciesinterferencehasbeenobviated.Note18212;OthermethodsfordeterminationofhydroxylgroupsaregiveninTestMethodsD817,D871,D1957,D2195,D4252,D4273,D4274,E222,E326,andE335.1.2ReviewthecurrentappropriateMaterialSafetyDataSheets(MSDS)fordetailedinformationconcerningtoxicity,firstaidprocedures,andsafetyprecautions.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associated,withitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.ForspecifichazardsseeSection9.
【中国标准分类号】:G17
【国际标准分类号】:71_040_40
【页数】:5P.;A4
【正文语种】:英语