BSEN6007972007爆炸气体用电气设备第7部分增强安全性e

BRITISHSTANDARDBSEN60079-7:2007Explosiveatmospheres—Part7:Equipmentprotectionbyincreasedsafety“e”TheEuropeanStandardEN60079-7:2007hasthestatusofaBritishStandardICS26.260.20  ©BSI2007ISBN9780580501982NationalforewordThisBritishStandardwaspublishedbyBSI.ItistheUKimplementationofEN60079-7:2007.ItisidenticalwithIEC60079-7:2006.ItsupersedesBSEN60079-7:2003,whichwillbewithdrawnon1October2009.TheUKparticipationinitspreparationwasentrustedbyTechnicalCommitteeGEL/31,Equipmentforexplosiveatmospheres,toSubcommitteeGEL/31/14,Typesofprotection“e”and“n”.AlistoforganizationsrepresentedonGEL/31/14canbeobtainedonrequesttoitssecretary.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandardcannotconferimmunityfromlegalobligations.AmendmentsissuedsincepublicationAmd.No.DateComments©2007CENELEC-AllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENELECmembers.Ref.No.EN60079-7:2007EICS29.260.20SupersedesEN60079-7:2003EnglishversionExplosiveatmospheres-Part7:Equipmentprotectionbyincreasedsafetye(IEC60079-7:2006)Atmosphèresexplosives-Partie7:Protectiondel'équipmentparsécuritéaugmentéee(CEI60079-7:2006)ExplosionsfahigeAtmosphäre-Teil7:GeräteschutzdurcherhöhteSicherheite(IEC60079-7:2006)ThisEuropeanStandardwasapprovedbyCENELECon2006-10-01.CENELECmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENELECmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENELECmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusastheofficialversions.CENELECmembersarethenationalelectrotechnicalcommitteesofAustria,Belgium,Bulgaria,Cyprus,theCzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,theNetherlands,Norway,Poland,Portugal,Romania,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.–2–2ForewordThetextofdocument31/623/FDIS,futureedition4ofIEC60079-7,preparedbyIECTC31,Equipmentforexplosiveatmospheres,wassubmittedtotheIEC-CENELECparallelvoteandwasapprovedbyCENELECasEN60079-7on2006-10-01.ThisEuropeanStandardsupersedesEN60079-7:2003.ThesignificantchangeswithrespecttoEN60079-7:2003are:–requirementsforelectricalconnectionsexpandedandclarified;–requirementsforluminaireballastsexpandedandclarified,–requirementsforevaluationandtestingofmotorrotorsclarified.Thefollowingdateswerefixed:–latestdatebywhichtheENhastobeimplementedatnationallevelbypublicationofanidenticalnationalstandardorbyendorsement(dop)2007-08-01–latestdatebywhichthenationalstandardsconflictingwiththeENhavetobewithdrawn(dow)2009-10-01ThisEuropeanStandardhasbeenpreparedunderamandategiventoCENELECbytheEuropeanCommissionandtheEuropeanFreeTradeAssociationandcoversessentialrequirementsofECDirective94/9/EC.SeeAnnexZZ.AnnexesZAandZZhavebeenaddedbyCENELEC.__________EndorsementnoticeThetextoftheInternationalStandardIEC60079-7:2006wasapprovedbyCENELECasaEuropeanStandardwithoutanymodification.–3–EN60079-7:2007CONTENTS1Scope...........................................................................................................................H62Normativereferences....................................................................................................H63Termsanddefinitions....................................................................................................H84Constructionalrequirementsforallelectricalapparatus................................................H114.1General..............................................................................................................H114.2Electricalconnections.........................................................................................H114.3Clearances.........................................................................................................H144.4Creepagedistances............................................................................................H194.5Solidelectricalinsulatingmaterials.....................................................................H204.6Windings..........................................................................