電氣間隔和爬電距離

EN60335-1

Creepagedistances,clearancesdistances

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IEC/EN規(guī)范版本區(qū)別：-IEC/EN60335-1:家用電器產(chǎn)品通用規(guī)范-IEC,Amendment:規(guī)范的修訂版本1)A1:2003,闡明2003年對規(guī)范進(jìn)展了修訂，版本編號:A12)同一版本IEC規(guī)范只允許兩次修訂,之后將公布新版本規(guī)范.IEC60335-1:2001(Fourthed)+A1:2004+A2:2006(如今IEC60335-1更新到IEC60335-1:2021(Fiveed))-EN規(guī)范的修訂版本(規(guī)范有效期DOP和DOW確定)EN60335-1:2002+A11:2004+A1:2004+A12:2006+A2:2006+A13:2021+A14:2021+A15:2021

什么是DOP/DOWDOP〔DateofPublication〕:根據(jù)IEC規(guī)范,轉(zhuǎn)化為國家規(guī)范的最后期限,也即是EN新規(guī)范公布日期.DOW:舊規(guī)范被替代的最后期限,即產(chǎn)品在這之前必需完成規(guī)范更新.(如dow:2007-10-1,那么是2007-10-1前需求作規(guī)范更新.)假設(shè)在新版本的規(guī)范中聲明了舊版本規(guī)范的DOW，那么舊版本的規(guī)范在DOW后自動失效。無論能否到了證書聲明的有效期，根據(jù)舊版本規(guī)范的證書和報告也自動失效。如需延期，必需進(jìn)展規(guī)范晉級，根據(jù)新版本的規(guī)范要求重新懇求證書。EN60335-1:2002/A14如下面DOW：2021-05-01，即是A13規(guī)范將于2021-05-01自動失效，A14開場強迫執(zhí)行.EN60335-1:2002/A15如下面DOW：2021-05-02，即是A14規(guī)范將于2021-05-02自動失效，A15開場強迫執(zhí)行.Cls29,Creepagedistances,clearancesdistancesandthroughinsulation電氣間隙決議某一電氣間歇能否滿足規(guī)范所允許的最小要求需求確定以下四個參數(shù):-絕緣種類,即他所要判的地方是根本/加強/功能/附加絕緣里的那一種.-額定脈沖電壓(RatedImpluseVoltage)過電壓類別(OverVoltageCategory)和任務(wù)電壓決議該電路的額定脈沖電壓.-污染等級(1,2,3)-產(chǎn)品任務(wù)電壓如何確定電氣間隔最小值：確定產(chǎn)品適用電壓.在本規(guī)范范圍內(nèi)的器具普通為II類過電壓.污染等級判別,普通參考詳細(xì)產(chǎn)品所屬的公用規(guī)范.絕緣種類,即他所要判的地方是根本/加強/功能/附加絕緣里的那一種.在丈量電氣間隙時,裸露導(dǎo)體上施加2N的外力;可觸及外殼施加30N的外力.假設(shè)構(gòu)造間隔受磨損，變形，部件運動或裝配影響時，電氣間隔要添加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.爬電間隔決議某一爬電間隔能否滿足規(guī)范所允許的最小要求需求確定以下四個參數(shù):-絕緣種類,即他所要判的地方是根本/加強/功能/附加絕緣里的那一種.-產(chǎn)品任務(wù)電壓.-污染等級(1,2,3)-資料的漏電起痕指數(shù).資料組別:a.materialgroupI:600<=CTIb.materialgroupII:400<=CTI<600c.materialgroupIIIa:175<=CTI<400d.materialgroupIIIb:100<=CTI<175在丈量爬電間隔時,裸露導(dǎo)體上施加2N的外力;可觸及外殼施加30N的外力.Accordingtotabel17andtabel18,comfirmedbasicinsulation,supplementinsulation,reinforcedinsulation&functionalinsulationofminimumcreepagedistances(suchasatpollutiondegree3,materialgroup:IIIa/IIIb,workingvoltage:220-240V)asbelow:InsulationtypeDistanceBasicinsulation4mmSupplementaryinsulation4mmReinforcedinsulation8mmFunctionalinsulation3.2mmThewindingwiretouchthemotororlessspecifiedmincreepagedistancescorebytestfinger(testprobeB)with2Nforce.ExampleforbasicinsulationNote1:Creepagedistanceofwindingneednotbegreaterthantheassociatedclearancespecifiedintable161.5mm4mmExampleforsupplementinsulationThecreepagedistanceofsupplementaryinsulationwasbetweeninternalwireandaccessibleenclouse.Internalwirecanbetouched.(0mm)ExampleforreinforcedinsulationThecreepagedistancesofreinforcedinsulationshallnotlessthan8mm.Asresult,thecreepagedistancewasmeasured7.5mmbetweenleadsofneonlampandthelampcoverjoint.并不是三類構(gòu)造或者SELV部分是可以平安觸及或者不帶電的.假設(shè)強電與SELV電路之間少于8mm間隔,是不能觸及，并以為是liveparts.如低壓電子線路并沒有與危險帶電體有效平安隔離，該電子

線路必需與可觸及外表之間應(yīng)滿足雙重絕緣和加強絕緣ExampleforfunctionalinsulationNote1:Creepagedistancesmaybereducediftheappliancecomplieswithclause19withthefunctionalinsulationshort-circuited.Forexample:Electroniccomponent.不同極性的帶電線路之間應(yīng)滿足功能絕緣.Thetransistorleads<limitationofcreepagedistance.如功能絕緣被短路時，產(chǎn)品仍符合Cls19，無危險發(fā)生，其電氣間隙和爬電間隔的要求可減少。應(yīng)留意只需根本絕緣的內(nèi)部導(dǎo)線經(jīng)過絕緣外殼縫隙