IEC_60364-4-44_A2_64_1384_CD.pdfVIP免费

64/1384/CDCOMMITTEEDRAFT(CD)IEC/TCorSC:64ProjectnumberIEC60364-4-44,A2,f1,Ed.1TitleofTC/SC:ElectricalinstallationsandprotectionagainstelectricalshockDateofcirculation2004-04-16Closingdateforcomments2004-07-16AlsoofinteresttothefollowingcommitteesTC99Supersedesdocument64/1344/CDand64/1383/CCFunctionsconcerned:SafetyEMCEnvironmentQualityassuranceSecretary:R.Pelta,GermanyTHISDOCUMENTISSTILLUNDERSTUDYANDSUBJECTTOCHANGE.ITSHOULDNOTBEUSEDFORREFERENCEPURPOSES.RECIPIENTSOFTHISDOCUMENTAREINVITEDTOSUBMIT,WITHTHEIRCOMMENTS,NOTIFICATIONOFANYRELEVANTPATENTRIGHTSOFWHICHTHEYAREAWAREANDTOPROVIDESUPPORTINGDOCUMENTATION.Title:Amendment2toIEC603644-44f1Ed.1:Electricalinstallationsofbuildings-Part4:Protectionforsafety-Part4-44:Protectionagainstvoltagedisturbancesandmeasuresagainstelectromagneticinfluences-Clause442:Protectionoflow-voltageinstallationsagainsttemporaryovervoltagesandfaultsbetweenhigh-voltagesystemsandearth(Titre):IntroductorynoteThisdrafthasbeenpreparedbyTC64/MT9intheframeofmaintenanceofPart44ofIEC60364.FORMCD(IEC)2002-05-14Copyright©2004InternationalElectrotechnicalCommission,IEC.Allrightsreserved.Itispermittedtodownloadthiselectronicfile,tomakeacopyandtoprintoutthecontentforthesolepurposeofpreparingNationalCommitteepositions.Youmaynotcopyor"mirror"thefileorprintedversionofthedocument,oranypartofit,foranyotherpurposewithoutpermissioninwritingfromIEC.IEC60364-4-44A.2Ed.1/CDIEC–2–64/1384/CDINTERNATIONALELECTROTECHNICALCOMMISSIONELECTRICALINSTALLATIONSOFBUILDINGS–Part4-44:Protectionforsafety–Protectionagainstvoltagedisturbancesandelectromagneticdisturbances440IntroductionPart4-44ofIEC60364coverstheprotectionofelectricalinstallationsagainstvoltagedisturbancesandelectromagneticdisturbances.Therequirementsarearrangedintothreesectionsasfollows:•Clause442Protectionoflow-voltageinstallationsagainsttemporaryovervoltagesandfaultsbetweenhigh-voltagesystemsandearth•Clause443Protectionagainstovervoltagesofatmosphericoriginorduetoswitching•Clause444Protectionagainstvo...