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IEC 60664-4-2005 低压系统内设备的绝缘配合.第4部分:高频电压应力的考虑

作者:标准资料网 时间:2024-05-02 23:45:45  浏览:8157   来源:标准资料网
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【英文标准名称】:Insulationcoordinationforequipmentwithinlow-voltagesystems-Part4:Considerationsofhigh-frequencyvoltagestress
【原文标准名称】:低压系统内设备的绝缘配合.第4部分:高频电压应力的考虑
【标准号】:IEC60664-4-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-09
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC109
【标准类型】:()
【标准水平】:()
【中文主题词】:电气工程;尺寸选定;定义;电气器具;规范(验收);检验;电气安全;防电击;设备;低电压;电驱动装置;电绝缘;电绝缘材料;绝缘;设计;低压设备;绝缘配合;跟踪系数;间隙;配合;低压绝缘子;高频;漏电路径;低压电器;电压应力;合作;绝缘材料;试验
【英文主题词】:Clearances;Co-ordination;Coordination;Definitions;Design;Dimensioning;Electricappliances;Electricalengineering;Electricalinsulatingmaterials;Electricalinsulation;Electricalsafety;Electrically-operateddevices;Equipment;Highfrequencies;Inspection;Insulatingmaterials;Insulationcoordination;Insulations;Interfacesofelectricalconnections;Leakagepaths;Lowvoltage;Low-voltageequipment;Low-voltageinstallations;Low-voltageinsulator;Protectionagainstelectricshocks;Specification(approval);Testing;Trackingindex;Voltagestress
【摘要】:ThispartofIEC60664dealswithbasic,supplementaryandreinforcedinsulationsubjectedtohigh-frequencyvoltagestresswithinlow-voltageequipment.Thedimensioningvaluesdirectlyapplyforbasicinsulation;forreinforcedinsulationadditionalrequirementsapplyaccordingtoPart1.Itisapplicableforthedimensioningofclearances,creepagedistancesandsolidinsulationstressedbyanytypeofperiodicvoltageswithafundamentalfrequencyabove30kHzandupto10MHz.ThispartofIEC60664canonlybeusedtogetherwithIEC60664-1orwithIEC60664-5(inthisstandardcalledPart1orPart5).ByusingPart1orPart5togetherwiththispartthefrequencylimitofPart1orPart5isextendedtofrequencieshigherthan30kHz.ThispartalsoappliestoPart3forfrequenciesgreaterthan30kHzandprotectionoftype1.Fortype2protectionthisquestionisunderconsideration.NOTE1Dimensioningvaluesforfrequenciesabove10MHzareunderconsideration.NOTE2Thisstandarddoesnotconsiderthehigh-frequencyemissiontothemains.Innormaluseofequipment,itisassumedthattheinterferenceofhigh-frequencyvoltagesemittedtothemainsisnegligiblewithrespecttoinsulationstress.Thereforeitisnotnecessarytotakeitintoaccount.Itappliestoequipmentforuseupto2000mabovesealevelhavingaratedvoltageuptoa.c.1000V.Itspecifiestherequirementsforclearances,creepagedistancesandsolidinsulationforequipmentbasedupontheirperformancecriteria.Itincludesmethodsofelectrictestingwithrespecttoinsulationcoordination.Theminimumclearancesspecifiedinthispartdonotapplywhereionizedgasesoccur.Specialrequirementsforsuchsituationsmaybespecifiedatthediscretionoftherelevanttechnicalcommittee.Thispartdoesnotdealwithdistances-throughliquidinsulation,-throughgasesotherthanair,-throughcompressedair.NOTE3Highervoltagesmayexistininternalcircuitsoftheequipment.NOTE4Requirementsforaltitudesexceeding2000mcanbederivedfromTableA.2ofAnnexAofPart1.Theobjectofthisstandardistoguidetechnicalcommitteesresponsiblefordifferentequipmentinordertorationalisetheirrequirementssothatinsulationcoordinationisachievedwhenspecifyingclearancesinair,creepagedistancesandsolidinsulationforequipment.
【中国标准分类号】:K04
【国际标准分类号】:29_080_30
【页数】:144P.;A4
【正文语种】:英语


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【英文标准名称】:Aerospaceseries-Screws,panhead,offsetcruciformrecess,coarsetolerancenormalshank,longthread,inalloysteel,cadmiumplated-Classification:1100PMa(atambienttemperature)/235oC.
【原文标准名称】:航空航天系列.镀镉的合金钢长螺纹粗公差标准柄偏置十字形凹槽平头螺钉.分类:1100PMa(室温)/235℃
【标准号】:NFL24-169-2010
【标准状态】:现行
【国别】:法国
【发布日期】:2010-06-01
【实施或试行日期】:2010-06-12
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:航空航天运输;航空运输;合金钢;镉;镀镉;镉覆层;名称与符号;尺寸规格;紧固件;作标记;材料;平头螺钉;凹槽;螺钉;航天运输;规范(验收);钢;表面处理;螺纹形状;螺纹;公差(测量);固定力矩十字形槽;重量
【英文主题词】:Aerospacetransport;Airtransport;Alloysteels;Cadmium;Cadmiumplated;Coatingsofcadmium;Designations;Dimensions;Fasteners;Marking;Materials;Panheadscrews;Recesses;Screws(bolts);Spacetransport;Specification(approval);Steels;Surfacetreatment;Threadforms;Threads;Tolerances(measurement);Torq-setrecesses;Weights
【摘要】:
【中国标准分类号】:V20
【国际标准分类号】:49_030_20
【页数】:17P;A4
【正文语种】:其他


【英文标准名称】:SublandtwistdrillswithMorsetapershanksforholespriortotappingscrewthreads
【原文标准名称】:攻丝前先钻孔的莫氏锥柄阶梯麻花钻
【标准号】:DIN8379-2006
【标准状态】:现行
【国别】:德国
【发布日期】:2006-11
【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】:镗孔车刀;空芯孔;设计;名称与符号;尺寸;钻头;高速钢;高速工具钢;机床部件;作标记;材料;莫氏锥柄;莫氏锥度;垂度(变形);叉排多刃阶梯钻;多刃阶梯钻;多刃阶梯麻花钻;锥柄;工具
【英文主题词】:
【摘要】:
【中国标准分类号】:J41
【国际标准分类号】:25_100_30
【页数】:6P.;A4
【正文语种】:德语



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