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EN60335-1Creepagedistances,clearancesdistancesUsefulwebsiteTochecktheIEClateststandardat:::104:2283954382744111VDE查询://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htmIEC/EN标准版本区别:-IEC/EN60335-1:家用电器产品通用标准-IEC,Amendment:标准的修订版本1)A1:2003,说明2003年对标准进行了修订,版本编号:A12)同一版本IEC标准只允许两次修订,之后将颁布新版本标准.IEC60335-1:2001(Fourthed)+A1:2004+A2:2006(现在IEC60335-1更新到IEC60335-1:2010(Fiveed))-EN标准的修订版本(标准有效期DOP和DOW确定)EN60335-1:2002+A11:2004+A1:2004+A12:2006+A2:2006+A13:2008+A14:2010+A15:2011什么是DOP/DOW•DOP(DateofPublication):根据IEC标准,转化为国家标准的最后期限,也即是EN新标准颁布日期.•DOW:旧标准被替代的最后期限,即产品在这之前必须完成标准更新.(如dow:2007-10-1,则是2007-10-1前需要作标准更新.)•如果在新版本的标准中声明了旧版本标准的DOW,则旧版本的标准在DOW后自动失效。无论是否到了证书声明的有效期,根据旧版本标准的证书和报告也自动失效。•如需延期,必须进行标准升级,根据新版本的标准要求重新申请证书。•EN60335-1:2002/A14•如下面DOW:2013-05-01,即是A13标准将于2013-05-01自动失效,A14开始强制执行.•EN60335-1:2002/A15•如下面DOW:2014-05-02,即是A14标准将于2014-05-02自动失效,A15开始强制执行.Cls29,Creepagedistances,clearancesdistancesandthroughinsulation•电气间隙•决定某一电气间歇是否满足标准所允许的最小要求须要确定以下四个参数:-绝缘种类,即你所要判的地方是基本/加强/功能/附加绝缘里的那一种.-额定脉冲电压(RatedImpluseVoltage)过电压类别(OverVoltageCategory)和工作电压决定该电路的额定脉冲电压.-污染等级(1,2,3)-产品工作电压如何确定电气间隔最小值:•确定产品适用电压.•在本标准范围内的器具一般为II类过电压.•污染等级判断,一般参考具体产品所属的专用标准.•绝缘种类,即你所要判的地方是基本/加强/功能/附加绝缘里的那一种.•在测量电气间隙时,裸露导体上施加2N的外力;可触及外壳施加30N的外力.•如果结构距离受磨损,变形,部件运动或装配影响时,电气间隔要增加0.5mm.•Accordingtotabel15andtabel16,comfirmedbasicinsulation,supplementinsulation,reinforcedinsulation&functionalinsulationofminimumClearancesdistances(suchas,workingvoltage:220-240V,overvolatgecategoryII)asbelow:InsulationtypeDistanceBasicinsulation1.5mmSupplementaryinsulation1.5mmReinforcedinsulation3mmFunctionalinsulation1.5mmExampleforbasicinsulation(1.5mm)Theterminalsoftubularsheathedheatingelementscounted1mm,ifthemicroenvironmentispollutiondegree1.Exampleforsupplementinsulation(1.5mm)•TheminimumclearanceissameasthebasicinsulationExampleforreinforcedinsulation(3mm)•Thereinforcedinsulationusingthenextstepforratedimpulsevoltage.Exampleforfunctionalinsulation(1.5mm)•Thefunctionalinsulationisbetweenlivepartsofdifferentpotential.Theminimumclearanceissameasthebasicinsulation.•爬电距离•决定某一爬电距离是否满足标准所允许的最小要求须要确定以下四个参数:-绝缘种类,即你所要判的地方是基本/加强/功能/附加绝缘里的那一种.-产品工作电压.-污染等级(1,2,3)-材料的漏电起痕指数.材料组别:a.materialgroupI:600=CTIb.materialgroupII:400=CTI600c.materialgroupIIIa:175=CTI400d.materialgroupIIIb:100=CTI175在测量爬电距离时,裸露导体上施加2N的外力;可触及外壳施加30N的外力.•Accordingtotabel17andtabel18,comfirmedbasicinsulation,supplementinsulation,reinforcedinsulation&functionalinsulationofminimumcreepagedistances(suchasatpollutiondegree3,materialgroup:IIIa/IIIb,workingvoltage:220-240V)asbelow:InsulationtypeDistanceBasicinsulation4mmSupplementaryinsulation4mmReinforcedinsulation8mmFunctionalinsulation3.2mm•Thewindingwiretouchthemotororlessspecifiedmincreepagedistancescorebytestfinger(testprobeB)with2Nforce.ExampleforbasicinsulationNote1:Creepagedistanceofwindingneednotbegreaterthantheassociatedclearancespecifiedintable161.5mm4mmExampleforsupplementinsulation•Thecreepagedistanceofsupplementaryinsulationwasbetweeninternalwireandaccessibleenclouse.2.6mmInternalwirecanbetouched.(0mm)Exampleforreinforcedinsulation•Thecreepagedistancesofreinforcedinsulationshallnotlessthan8mm.•Asresult,thecreepagedistancewasmeasured7.5mmbetweenleadsofneonlampandthelampcoverjoint.并不是三类结构或者SELV部分是可以安全触及或者不带电的.如果强电与SELV电路之间少于8mm距离,是不能触及,并认为是liveparts.如低压电子线路并没有与危险带电体有效安全隔离,该电子线路必须与可触及表面之间应满足双重绝缘和加强绝缘Exampleforfunctionalinsulation•Note1:Creepagedistancesmaybereducediftheappliancecomplieswithclause19withthefunctionalinsulationshort-circuited.Forexample:Electroniccomponent.•不同极性的带电线路之间应满足功能绝缘.Thetransistorleadslimitationofcreepagedistance.•如功能绝缘被短路时,产品仍符合Cls19,无危险发生,其电气间隙和爬电距离的要求可减少。•应注意只有基本绝缘的内部导线通过绝缘外壳缝隙、螺钉柱缝隙到人手可触摸表面的附加绝缘距离.•应注意带电部件通过外壳缝隙、螺钉柱缝隙到人手可触摸表面的加强(双重)绝缘距离.•爬电距离是大于等于电气间隔.•附加绝缘或加强绝缘要求厚度不小于1mm/2mm.Summary:Theend(Ifanythingwrong,pleasecorrectit)Thankyouverymuch!
本文标题:电气间隔和爬电距离
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