EN 60424-3-1999 铁氧体磁芯.表面缺陷性极限指南.第3部分:ETD磁芯和E磁芯

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【英文标准名称】:Ferritecores-Guideonthelimitsofsurfaceirregularities-Part3:ETD-coresandE-cores(IEC60424-3:1999);GermanversionEN60424-3:1999
【原文标准名称】:铁氧体磁芯.表面缺陷性极限指南.第3部分:ETD磁芯和E磁芯
【标准号】:EN60424-3-1999
【标准状态】:现行
【国别】:
【发布日期】:2000-06
【实施或试行日期】:2000-06-01
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:ETD磁芯;规范;RM芯;磁学;裂纹;磁的;精整;外观检查(试验);表面不连续性;极限(数学);铁氧体磁心;分规范;指导手册;缺陷;缺陷;表面纹理;不规则的;电磁元件;不规则性;铁酸盐;E形铁芯;电气工程;杂质;缺陷与故障
【英文主题词】:Defects;E-cores;ETD-cores;Ferritcores;Ferrites;Finishes;Guidebooks;Imperfection;Irregular;Irregularities;Limits(mathematics);RM-cores;Sectionalspecification;Surfacetexture
【摘要】:
【中国标准分类号】:L19
【国际标准分类号】:29_100_10
【页数】:10P.;A4
【正文语种】:英语


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【英文标准名称】:StandardServiceConditionsandDefinitionsforExternalFusesforShuntCapacitors
【原文标准名称】:并联电容器外部熔断器的标准工作条件和定义
【标准号】:ANSI/IEEEC37.40b-1996
【标准状态】:作废
【国别】:美国
【发布日期】:1996
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:外壳;断路器;高电压;附件
【英文主题词】:accessories;circuit-breakers;enclosures;highvoltage
【摘要】:
【中国标准分类号】:K31
【国际标准分类号】:29_120_40
【页数】:
【正文语种】:英语


【英文标准名称】:StandardTestMethodforDeterminingthe(In-Plane)HydraulicTransmissivityofaGeosyntheticbyRadialFlow
【原文标准名称】:径向流动法测定土工合成物(平面)液压透射率的试验方法
【标准号】:ASTMD6574-2000(2006)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:D35.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:geosynthetics;hydraulictransmissivity;indextest;in-planeflow;radialtransmissivity
【摘要】:Thistestmethodisanindextesttoestimateandcomparethein-planehydraulictransmissivityofoneorseveralcandidategeosyntheticsunderspecificgradientandstressconditions.Thistestmethodmaybeusedforacceptancetestingofcommercialshipmentsofgeosynthetics,butcautionisadvisedsinceinformationaboutbetween-laboratoryprecisionisincomplete.Comparativetestsasdirectedin5.2.1areadvisable.5.2.1Incaseofadisputearisingfromdifferencesinreportedtestresultswhenusingthisprocedureforacceptanceofcommercialshipments,thepurchaserandthesuppliershouldfirstconfirmthatthetestshavebeenconductedusingcomparabletestparametersincludingspecimenconditioning,normalstress,hydraulicsystemgradient,etc.Comparativeteststhenshouldbeconductedtodetermineifthereisastatisticalbiasbetweentheirlaboratories.Competentstatisticalassistanceisrecommendedfortheinvestigationofbias.Asaminimum,thetwopartiesshouldtakeagroupoftestspecimensthatareashomogeneousaspossibleandthatareformedfromalotofthematerialinquestion.Thetestspecimensshouldbeassignedrandomlytoeachlaboratoryfortesting.TheaverageresultsfromthetwolaboratoriesshouldbecomparedusingtheStudentrsquo;t-testforunpaireddataandanacceptableprobabilitylevelchosenbythetwopartiesbeforetestingisbegun.Ifbiasisfound,eitheritscausemustbefoundandcorrectedorthepurchaserandsuppliermustagreetointerpretfuturetestresultsinlightoftheknownbias.1.1Thistestmethodcoverstheprocedurefordeterminingthein-planetransmissivityofgeosyntheticsundervaryingnormalcompressivestressesusingaradialflowapparatus.Thetestisintendedtobeanindextestusedprimarilyforgeotextiles,althoughotherproductscomposedofgeotextilesandgeotextile-typematerialsmaybesuitablefortestingwiththistestmethod.1.2Thistestmethodisbasedontheassumptionthatthetransmissivityofthegeosyntheticisindependentoforientationoftheflowandisthereforelimitedtogeosyntheticsthathavesimilartransmissivityinalldirectionsandshouldnotbeusedformaterialswithorientedflowbehavior.1.3Thistestmethodhasbeendevelopedspecificallyforgeosyntheticsthathavetransmissivityvaluesontheorderoforlessthan2104m2/s.ConsiderusingTestMethodD4716forgeosyntheticswithtransmissivityvalueshigherthan2104m2/s.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P04
【国际标准分类号】:59_080_70
【页数】:5P.;A4
【正文语种】: