EN500221977Specificationforlowvoltageswitchgearand

BRITISHSTANDARDBS5584:1978EN50022SpecificationforLowvoltageswitchgearandcontrolgearforindustrialuse—MountingrailsTophatrails35mmwideforsnap-onmountingofequipmentThisEuropeanStandardEN50022wasgivenasfrom31May1978thestatusofaBritishStandardUDC621.316.54:621.3.027.2:62–218–423.9LicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,TueMar0610:07:26GMT+00:002007,UncontrolledCopy,(c)BSIBS5584:1978ThisBritishStandardwaspublishedundertheauthorityoftheExecutiveBoardon31May1978©BSI03-1999ThefollowingBSIreferencesrelatetotheworkonthisstandard:CommitteereferencePEL/92Draftforcomment75/21514DCISBN0580101266CooperatingorganizationsTheEuropeanCommitteeforElectrotechnicalStandardization(CENELEC),underwhosesupervisionthisEuropeanStandardwasprepared,comprisestheNationalCommitteesofthefollowingcountries.ABritishStandarddoesnotpurporttoincludeallthenecessaryprovisionsofacontract.UsersofBritishStandardsareresponsiblefortheircorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,pagesiandii,theENtitlepage,pages2to8,aninsidebackcoverandabackcover.Thisstandardhasbeenupdated(seecopyrightdate)andmayhavehadamendmentsincorporated.Thiswillbeindicatedintheamendmenttableontheinsidefrontcover.AustriaNetherlandsBelgiumNorwayDenmarkPortugalFinlandSpainFranceSwedenGermanySwitzerlandIrelandUnitedKingdomItalyAmendmentsissuedsincepublicationAmd.No.DateofissueCommentsLicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,TueMar0610:07:26GMT+00:002007,UncontrolledCopy,(c)BSIBS5584:1978©BSI03-1999iContentsPageCooperatingorganizationsInsidefrontcoverTextofEN500223NationalappendixAInsidebackcoverNationalappendixBInsidebackcoverLicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,TueMar0610:07:26GMT+00:002007,UncontrolledCopy,(c)BSIiiblankLicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,TueMar0610:07:26GMT+00:002007,UncontrolledCopy,(c)BSIEUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN50022Edition1July1977UDC621.316.54:621.3.027.2:62–218–423.9Keywords:Electricalswitchgearandcontrolgear—industrialuse—domesticuse—mountingrail—mountingofequipment—snap-onmounting—tophatrail—steelrail—dimensionalstandardization—35mmwide—(tophatrail)EnglishversionLowvoltageswitchgearandcontrolgearforindustrialuseMountingrailsTophatrails35mmwideforsnap-onmountingofequipmentAppareillageindustrielàbassetension.Profiléssupports.Profiléschapeaudelongeur35mmpourlafixationd’appareilsencliquetablesIndustrielleNiederspannungs-Schaltgeräte.Tragschienen.Hutschienen35mmbreitzurSchnappbesfestigungvonGerätenThisEuropeanStandardwasacceptedbyCENELECon5July1977.CENELECmembersarecommittedinaccordancewithCENELECInternalRegulationstogiventhisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCENELECGeneralSecretariatortoanyCENELECmember.ThisEuropeanStandardisestablishedbyCENELECinthreeofficialversions(English,French,German).Atranslationmadebyanothermemberunderitsownresponsibility,initsownlanguage,andnotifiedtoCENELEChasthesamestatus.CENELECmembersarethenationalelectrotechnicalcommitteesofAustria,Belgium,Denmark,Finland,France,Germany,Ireland,Italy,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom.CENELECEuropeanCommitteeforElectrotechnicalStandardizationComitéEuropéendeNormalisationElectrotechniqueEuropäischesKomiteefürelektrotechnischeNormungGeneralSecretariat:rueBréderode,2,B–1000Brussels©CopyrightreservedtoallCENELECmembersLicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,TueMar0610:07:26GMT+00:002007,UncontrolledCopy,(c)BSIEN50022©BSI03-19992ContentsPageThisEuropeanStandardhasbeenpreparedbyCENELECTechnicalCommittee17X.1General32Scope33Dimensions34Designation35Material36Finish37Availability38Tolerancesonform4AppendixGuidancefortheuseoftophatrails5Figure1—Tophatrails35mmwide3Figure2—Tolerancesonform4Figure3—Assessmentofdeflectionofrail5Figure4—Loadcapacity,ME=f(L,h)6LicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,TueMar0610:07:26GMT+00:002007,UncontrolledCopy,(c)BSIEN50022©BSI03-19993ThisEuropeanStandardhasbeenpreparedbyCENELECTechnicalCommittee17X.1GeneralToensuretheuniversalutilizationofsnap-onmountingofequipment,itisappropriatetostandardizecertaintypesofrail.Thisstandardspecifiestwotypesoftophatrail,both35mmwide:one,7.5mmhigh,isalreadywidelyused;theother,15mmhigh,isnew;itismorerigidandpermitsthemountingofheavierequipmentand/orgreaterdistancesbetweenfixingpoints.Forthemountingofequipmentthatistoolargeortooheavyforeither35mmtophatrail,a75mmtophatrailisspecifiedinEN50023.2ScopeThisstandardspecifies35mmwidesteeltophatrailsforthesnap-onmountingofequipment.3DimensionsThedimensionsofbothtypesoftophatrailaregiveninFigure1.Thesedimensionsapplyoverthewholelengthofthetophatrail,butshallnotbeverifiedanywherelessthan10mmfromtheends.4DesignationThedesignationofa35mmwidetophatra