1、BRITISH STANDARD AEROSPACE SERIES BS EN 3475-512:2002 Cables, electrical, aircraft use Test methods Part 512: Flexure endurance The European Standard EN 3475-512:2002 has the status of a British Standard ICS 49.060 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 3475-512:
2、2002 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 11 July 2002 BSI 11 July 2002 ISBN 0 580 40054 9 National foreword This British Standard i
3、s the official English language version of EN 3475-512:2002. The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology, to Subcommittee ACE/6/2, Aerospace cables, which has the responsibility to: A list of organization
4、s represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards C
5、orrespondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard doe
6、s not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European devel
7、opments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 4, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issu
8、ed since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN3475512 June2002 ICS49.060 Englishversion AerospaceseriesCables,electrical,aircraftuseTest methodsPart512:Flexureendurance SriearospatialeCbleslectriquesusage aronautiqueMthodesdessaisPartie512:Rsistance lafl
9、exion LuftundRaumfahrtElektrischenLeitungenfrLuftfahrt VerwendungTeil512:Wechselbiegefestigkeit ThisEuropeanStandardwasapprovedbyCENon20January2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwi
10、thoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityof
11、aCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,Switzerla
12、ndandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN3475512:2002EEN3475512:2002(E) 2 Forew
13、ord Thisdocument(EN3475512:2002)hasbeenpreparedbytheEuropeanAssociationofAerospace Manufacturers(AECMA). AfterenquiriesandvotescarriedoutinaccordancewiththerulesofthisAssociation,thisStandardhas receivedtheapprovaloftheNationalAssociationsandtheOfficialServicesofthemembercountriesof AECMA,priortoits
14、presentationtoCEN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyDecember2002,andconflictingnationalstandardsshallbe withdrawnatthelatestbyDecember2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardso
15、rganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway, Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdomEN3475512:2002(E) 3 1 Scope Thisstandardspec
16、ifiesamethodoftestingflexureenduranceofthecablewhenitissubjectedtoalternating flexing. ItshallbeusedtogetherwithEN3475100. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreferenceprovisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextan
17、dthepublicationsarelisted hereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthe latesteditionofthepublicationreferredtoapplies. EN3475100 AerospaceseriesCables,electrical
18、,aircraftuseTestmethodsPart100:General 3 Preparationofspecimensandprincipleoftest Takespecimensofadequatelengthfromafinishedcableandinstallthemonapparatusdescribedhereafter. Thistestmakesitpossibletodeterminetheresistanceofthecabletocyclesofrepeatedflexing. Withthecablevertical,acycleisdefinedbyarot
19、ationof90left,returntothevertical,rotationof90right andreturntothevertical. Thedamageisdetectedbyconductorbreakageandthusaninterruptionofelectricalcontinuitybetweenthe twoendsofthetestedspecimen. Thetestisnormallyperformedongauge20cables. Itiscarriedoutatambienttemperature. 4 Apparatusandinstallatio
20、nofspecimens Theapparatusisdescribedbythefigure1. Itisfittedwithacounterandanautomaticstopdevicecontrolledbyinterruptionofelectricalcontinuity. Therotationspeedshallbeanuniformrateof(18 2 )cycles/min. Thespacebetweenmandrelsisequaltothemaximumdiameterofthetestedcable. ThemandreldiameterDandweightMar
21、especifiedintheproductstandard.EN3475512:2002(E) 4 Figure1 5 Procedure Afterinstallingaspecimenandbeforecommencingthefulltest,performapreliminaryrunandifnecessary adjustthedistance,themandrelsandtheattachedweightsuchthatpossibleresonanceeffectsareavoided. Fortheactualtest,actuatethedetectioncircuit,
22、resetthecounterandrunthemachineuntilautoshutdown takesplace. 6 Requirement Thistestshallbeperformedonaminimumof3specimens. Themeanvalueofthistestshallbegreaterthanthevaluespecifiedintheproductstandard. Thenumberofcyclesbetweenthebeginningofthetestandtheendingtriggeredbythedetectionsystem shallbegrea
23、terthanthevaluespecifiedintheproductstandard.BS EN 3475-512:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level.
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