BS EN 60424-5-2009 铁氧体磁芯.表面缺陷的限值指南.第5部分:平面磁芯
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【英文标准名称】:Ferritecores-Guideonthelimitsofsurfaceirregularities-Part5:Planar-cores
【原文标准名称】:铁氧体磁芯.表面缺陷的限值指南.第5部分:平面磁芯
【标准号】:BSEN60424-5-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-07-31
【实施或试行日期】:2009-07-31
【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】:裂纹;损伤;缺陷;E形铁芯;EI-铁芯;电气工程;铁氧体磁心;精整;瑕疵;指导手册;不完整性;铁芯;不规则性;极限(数学);磁的;电磁元件;磁学;分规范;规范;表面不连续性;外观检查(测试)
【英文主题词】:Crack;Damage;Defects;E-cores;EI-cores;Electricalengineering;Ferritcores;Finishes;Flaws;Guidebooks;Imperfections;Ironcore;Irregularities;Limits(mathematics);Magnetic;Magneticcomponents;Magnetism;Sectionalspecification;Specification;Surfacediscontinuities;Visualinspection(testing)
【摘要】:ThispartofIEC60424givesguidanceonallowablelimitsofsurfaceirregularitiesapplicabletoplanar-coresinaccordancewiththerelevantgenericspecificationdefinedinIEC60424-1.TherelationsbetweenthemaindimensionsofplanarE-,ER-andEL-coresdifferfromthoseofstandardcores.Forexample,thewidthofplanarcoresislargerwhilethetotalheightismuchsmaller.Alsothethicknessofthelegsisinmostcasessmallerthancomparedtostandardcores.Thereforetheconceptoffixedreferencedimensionstodeterminethelengthofcracklimitsyieldcracklengthswhicharenotacceptableforthistypeofcore.ThispartofIEC60424followsanotherconceptwhichrelatesthecracklengthtodimensionsofthesurfaceonwhichthecrackoccurs.Alsotheconcepttodeterminethemaximumareaofchipsbasedonthetotalmatingsurfacefailsinthecaseofplanarcores.Theouterlegsofplanarcoresaremuchthinnerthanthoseofstandardcoreswhichmakesoverlappingandgluingmuchmoredifficult.Asinglechipofmaximumsizeontheouterlegmayriskthefunctionalityofthecoreset.Thereforethisstandardusesasareferencethematingsurfaceonwhichthechipoccurs.WindingsofplanarcoresareoftenPCB’swhicharegluedtotheinnersurfacesoftheplanarcore.Forthisreasontheinnersurfacesoftheplanarcoresneedtohaveabetterqualitythantheinnersurfacesofstandardcores.Thiswastakenintoaccountbyreducingthemaximumallowableareaofpulloutsintheinnersurfaces.Thisstandardisconsideredasasectionalspecificationusefulinthenegotiationbetweenferritecoremanufacturersandusersaboutsurfaceirregularities.
【中国标准分类号】:K14
【国际标准分类号】:29_100_10
【页数】:22P.;A4
【正文语种】:英语
【原文标准名称】:铁氧体磁芯.表面缺陷的限值指南.第5部分:平面磁芯
【标准号】:BSEN60424-5-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-07-31
【实施或试行日期】:2009-07-31
【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】:裂纹;损伤;缺陷;E形铁芯;EI-铁芯;电气工程;铁氧体磁心;精整;瑕疵;指导手册;不完整性;铁芯;不规则性;极限(数学);磁的;电磁元件;磁学;分规范;规范;表面不连续性;外观检查(测试)
【英文主题词】:Crack;Damage;Defects;E-cores;EI-cores;Electricalengineering;Ferritcores;Finishes;Flaws;Guidebooks;Imperfections;Ironcore;Irregularities;Limits(mathematics);Magnetic;Magneticcomponents;Magnetism;Sectionalspecification;Specification;Surfacediscontinuities;Visualinspection(testing)
【摘要】:ThispartofIEC60424givesguidanceonallowablelimitsofsurfaceirregularitiesapplicabletoplanar-coresinaccordancewiththerelevantgenericspecificationdefinedinIEC60424-1.TherelationsbetweenthemaindimensionsofplanarE-,ER-andEL-coresdifferfromthoseofstandardcores.Forexample,thewidthofplanarcoresislargerwhilethetotalheightismuchsmaller.Alsothethicknessofthelegsisinmostcasessmallerthancomparedtostandardcores.Thereforetheconceptoffixedreferencedimensionstodeterminethelengthofcracklimitsyieldcracklengthswhicharenotacceptableforthistypeofcore.ThispartofIEC60424followsanotherconceptwhichrelatesthecracklengthtodimensionsofthesurfaceonwhichthecrackoccurs.Alsotheconcepttodeterminethemaximumareaofchipsbasedonthetotalmatingsurfacefailsinthecaseofplanarcores.Theouterlegsofplanarcoresaremuchthinnerthanthoseofstandardcoreswhichmakesoverlappingandgluingmuchmoredifficult.Asinglechipofmaximumsizeontheouterlegmayriskthefunctionalityofthecoreset.Thereforethisstandardusesasareferencethematingsurfaceonwhichthechipoccurs.WindingsofplanarcoresareoftenPCB’swhicharegluedtotheinnersurfacesoftheplanarcore.Forthisreasontheinnersurfacesoftheplanarcoresneedtohaveabetterqualitythantheinnersurfacesofstandardcores.Thiswastakenintoaccountbyreducingthemaximumallowableareaofpulloutsintheinnersurfaces.Thisstandardisconsideredasasectionalspecificationusefulinthenegotiationbetweenferritecoremanufacturersandusersaboutsurfaceirregularities.
【中国标准分类号】:K14
【国际标准分类号】:29_100_10
【页数】:22P.;A4
【正文语种】:英语
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