【英文标准名称】:StandardSpecificationsforHighVoltage(1000V)ExpulsionandCurrent-limitingPowerClassFusesandFuseDisconnectingSwitches
【原文标准名称】:高压(1000V)冲出式和电流限制功率等级保险丝和保险丝断开开关用标准规格
【标准号】:ANSI/IEEEC37.46-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:电气工程;保险丝断开;熔断器;高电压;高压熔断器;高压开关设备;隔离开关;规范;规范(验收);开关
【英文主题词】:Electricalengineering;Fusedisconnection;Fuses;Highvoltage;High-voltagefuse;High-voltageswitchgears;Isolatorswitches;Specification;Specification(approval);Switches
【摘要】:Thisstandardestablishesspecificationsforhigh-voltage(above1000V)expulsionandcurrent-limitingtypepowerclassfuses,andaccessories.Allofthesedevicesareintendedforuseonalternatingcurrentsystems.
【中国标准分类号】:K31
【国际标准分类号】:29_120_50
【页数】:
【正文语种】:英语


【英文标准名称】:Plastics-Determinationoffracturetoughness(GicandKic)atmoderatelyhighloadingrates(1m/s)
【原文标准名称】:在适度高负载率(1m/s)下(GDOWNiDOWNc和KDOWNiDOWNc)抗断裂韧性的测定
【标准号】:BSISO17281-2002
【标准状态】:现行
【国别】:英国
【发布日期】:2002-11-22
【实施或试行日期】:2002-11-22
【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】:断裂试验;测定;机械试验;裂纹;裂开;塑料;断裂韧性;抗断裂强度;机械处理;试样制备;试验
【英文主题词】:Breakingstrength;Breakingtests;Cracktoughness;Cracking;Determination;Flaws;Fracturetoughness;Mechanicaltesting;Mechanicaltreatment;Plastics;Specimenpreparation;Testing
【摘要】:ThisInternationalStandardprovidesguidelinesfordeterminingthefracturetoughnessofplasticsinthecrack-openingmode(ModeI)byalinearelasticfracturemechanics(LEMF)approach,atload-pointdisplacementratesofupto1m/s.ItsupplementsISO13586soastoextenditsapplicabilitytoloadingratessomewhathigherthanisthecaseinthescopeofthelatterInternationalStandard.Fracturetestingathighloadingratespresentsspecialproblemsbecauseofthepresenceofdynamiceffects:vibrationsinthetestsystemproducingoscillationsintherecordedquantities,andinertialloadsproducingforcesonthetestspecimendifferentfromtheforcessensedbythetestfixture.Theseeffectsneedeithertobecontrolledand,ifpossible,reducedbyappropriateaction,orelsetobetakenintoaccountthroughproperanalysisofthemeasureddata.Therelativeimportanceofsucheffectsincreaseswithincreasingtestingrate(decreasingtestduration).Atspeedsoflessthan0,1m/s(loadingtimesofgreaterthan10ms)thedynamiceffectsmaybenegligibleandthetestingproceduregiveninISO13586canbeappliedasitstands.Atspeedsapproaching1m/s(loadingtimesoftheorderof1ms)thedynamiceffectsmaybecomesignificantbutstillcontrollable.TheproceduregiveninISO13586canstillbeusedthoughwithsomeprovisosandthesearecontemplatedinthisInternationalStandard.Atspeedsofseveralmeterspersecondandhigher(loadingtimesmarkedlyshorterthan1ms)thedynamiceffectsbecomedominant,anddifferentapproachestofracturetoughnessdeterminationarerequired,whichareoutsidethescopeofthisInternationalStandard.Thegeneralprinciples,methodsandrulesgiveninISO13586forfracturetestingatlowloadingratesremainvalidandshouldbefollowedexceptwhereexpresslystatedotherwiseinthisInternationalStandard.ThemethodsaresuitableforusewiththesamerangeofmaterialsascoveredbyISO13586.Althoughthedynamiceffectsoccurringathighloadingratesarelargelydependentonthematerialtestedaswellasonthetestequipmentandtestgeometryused,theguidelinesgivenherearevalidingeneral,irrespectiveoftestequipment,testgeometryandmaterialtested.Thesamerestrictionsastolinearityoftheload-displacementdiagram,specimensizeandnotchtipsharpnessapplyasforISO13586.Thelinearityrequirementsreferredtoin6.1ofISO13586:2000,areverifiedhereonthe"smoothed"load-displacementcurve,tobeobtainedasspecifiedin8.1.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:32P.;A4
【正文语种】:英语