BS EN 3475-305-2002 Aerospace series - Cables electrical aircraft use - Test methods - Overload resistance《航空航天系列 航空器用电缆 试验方法 过载电阻》.pdf

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1、BRITISH STANDARD AEROSPACE SERIES BS EN 3475-305:2002 Cables, electrical, aircraft use Test methods Part 305: Overload resistance The European Standard EN 3475-305:2002 has the status of a British Standard ICS 49.060 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 3475-30

2、5:2002 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 15 February 2002 BSI 15 February 2002 ISBN 0 580 38368 7 National foreword This British

3、Standard is the official English language version of EN 3475-305:2002. 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

4、organizations 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

5、 Standards Correspondence 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

6、Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European develop

7、ments 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 and 3 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Am

8、d. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN3475305 February2002 ICS49.060 Englishversion AerospaceseriesCables,electrical,aircraftuseTest methodsPart305:Overloadresistance SriearospatialeCbleslectriquesusage aronautiqueMthodesdessaisPartie305:Tenueaux surcharges LuftundRaum

9、fahrtElektrischeLeitungenfrLuftfahrt, VerwendungPrfverfahrenTeil305:berlastbarkeit ThisEuropeanStandardwasapprovedbyCENon5August2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalterat

10、ion.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoi

11、tsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKing

12、dom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN3475305:2002EEN3475305:2002(E) 2 Foreword Thisdocumen

13、t(EN3475305:2002)hasbeenpreparedbytheEuropeanAssociationofAerospace Manufacturers(AECMA). AfterinquiriesandvotescarriedoutinaccordancewiththerulesofthisAssociation,thisStandardhas receivedtheapprovaloftheNationalAssociationsandtheOfficialServicesofthemembercountriesof AECMA,priortoitspresentationtoC

14、EN. ThisEuropeanStandardshallbegiventhestatusofanationalstandards,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyAugust2002,andconflictingnationalstandardsshallbewithdrawnat thelatestbyAugust2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthef

15、ollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway, Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN3475305:2002(E) 3 1 Scope Thisstandardspecifiesamethodofmea

16、suringtheresistancetooverloadoffinishedcables. ItshallbeusedtogetherwithEN3475100. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreferenceprovisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Ford

17、atedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthe latesteditionofthepublicationreferredtoapplies. EN3475100 AerospaceseriesCables,electrical,aircraftuseTestmethodsPart100:General 3

18、 Preparationofspecimens Eachspecimenhaving0,75mto1musefullengthbetweenthesupports,shallbeinstalledhorizontallyin frontofascreenandlightlystretchedattheendstoavoidanyslackduringthetest. Thetestshallbecarriedoutatambienttemperatureinachamberwherethewholeunitshallbesheltered fromdraughts.Anextractionsh

19、allbeprovidedbutonlyoperatedaftercompletionofthetest. Toidentifytheappearanceofsmoke,ascreenwithblackandwhitehorizontalbandsoranyotherdevice shallbeused. 4 Method Thepurposeofthistestshallbetocheckthatthereisnosmokeemissionforanoverloadlevelbringingthe conductortoatemperatureT 1 ,andthatforanoverloa

20、dbringingtheconductortoatemperatureT 2 ,thereis neitherignitionnordisappearanceoftheinsulation.ThetemperaturesT 1 andT 2 shallbespecifiedinthe productstandard. Thetestshallbeperformedonsize0,60mm 2 only. Thetemperaturesshallbedeterminedbymeasuringthevariationofthevoltagedropinthecentralpartofthe cab

21、le(2/3oftheusefullengthmaximum)betweenthevoltageapplicationpoints. 20 U U = 20 R R =1 0,004( 20) Firstregulatethecurrenttoavalue I 1 ,whichraisesthetemperatureoftheconductortoT 1 ,foraperiodof 30min(temperaturedefinedintheproductstandard). Thecurrentshallthenbeincreasedtoasecondvalue I 2 for15min,br

22、ingingthetemperatureofthe conductortoT 2 (temperaturedefinedintheproductstandard). 5 Requirements AtT 1 : novisiblesmokeorsmellorappreciablechangeofcolour; AtT 2 : novisibledeteriorationoftheinsulation(peeling,cracking,strippingoftheconductor)no spontaneouscombustionandnovisiblesmoke.BS EN 3475-305:

23、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. It is incorporated by Royal Charter. Revisions British Stan

24、dards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while usin

25、g this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers au

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27、te at http:/www.bsi-. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and i

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