1、BRITISH STANDARD AEROSPACE SERIES BS EN 2591-6321: 2002 Elements of electrical and optical connection Test methods Part 6321: Optical elements Damp heat, cyclic test The European Standard EN 2591-6321:2002 has the status of a British Standard ICS 49.060 BS EN 2591-6321:2002 This British Standard, ha
2、ving 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 July 2002 BSI 15 July 2002 ISBN 0 580 40047 6 National foreword This British Standard is the official English languag
3、e version of EN 2591-6321:2002. The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology, to Subcommittee ACE/6/10, Aerospace Fibre optic systems and equipment, which has the responsibility to: A list of organizations
4、 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 Co
5、rrespondence 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 does
6、 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 developments and pro
7、mulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 5 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Co
8、mmentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN25916321 June2002 ICS49.060 Englishversion AerospaceseriesElementsofelectricalandopticalconnection TestmethodsPart6321:OpticalelementsDampheat, cyclictest SriearospatialeOrganesdeconnexionlectriqueet optiqueMthodesdessaisPartie6321:Organes optiq
9、uesChaleurhumide,essaicyclique LuftundRaumfahrtElektrischeundoptische VerbindungselementePrfverfahrenTeil6321:Optische ElementeFeuchteWrmezyklischePrfung ThisEuropeanStandardwasapprovedbyCENon8February2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsfor
10、givingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversionina
11、nyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembour
12、g,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnation
13、alMembers. Ref.No.EN25916321:2002EEN25916321:2002(E) 2 Foreword Thisdocument(EN25916321:2002)hasbeenpreparedbytheEuropeanAssociationofAerospace Manufacturers(AECMA). AfterenquiriesandvotescarriedoutinaccordancewiththerulesofthisAssociation,thisStandardhas receivedtheapprovaloftheNationalAssociations
14、andtheOfficialServicesofthemembercountriesof AECMA,priortoitspresentationtoCEN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyDecember2002,andconflictingnationalstandardsshallbe withdrawnatthelatestbyDecember2002. Accor
15、dingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway, Portugal,Spain,Sweden,Switzerlandan
16、dtheUnitedKingdomEN25916321:2002(E) 3 1 Scope Thisstandardspecifiesamethodofcheckingtheabilityofopticalconnectionelements(includingpermanent connections)andfibreoptictowithstanddampheat. ItshallbeusedtogetherwithEN2591100. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreferen
17、ceprovisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedrefe
18、rencesthe latesteditionofthepublicationreferredtoapplies. EN2591100 AerospaceseriesElementsofelectricalandopticalconnectionTestmethods Part100:General 1) EN2591408 AerospaceseriesElementsofelectricalandopticalconnectionsTestmethods Part408:OpticalelementsMatingandunmatingforces EN2591601 Aerospacese
19、riesElementsofelectricalandopticalconnectionsTestmethods Part601:OpticalelementsInsertionloss EN2591602 AerospaceseriesElementsofelectricalandopticalconnectionsTestmethods Part602:OpticalelementsVariationofattenuationandopticaldiscontinuity EN25916101 AerospaceseriesElementsofelectricalandopticalcon
20、nectionsTestmethods Part6101:OpticalelementsVisualexamination 3 Preparationofspecimens 3.1 Specimensshallbefittedwithnormalaccessoriesandterminatedinaccordancewiththeproduct standard.Cavitieswithunterminatedcontactsshallhavefillerplugsfitted(whereapplicable). Ifnotyetatstandardtestconditions,thespec
21、imensshallbesubjectedtostandardtestconditionsand stabilizedattheseconditionsfor24hasdefinedinEN2591100. 3.2 Unlessotherwiseindicatedinthetechnicalspecificationthefollowingdetailsshallbespecified: specimensmatedorunmatedandfittedwithprotectivecovers; typeandlengthofcable/fibre; maximumvalueofinsertio
22、nloss; maximumpermissiblevariationofattenuation; numberofcycles; typeofpreconditioning; maximumandminimummatingandunmatingforces. 1) PublishedasAECMAPrestandardatthedateofpublicationofthisstandardEN25916321:2002(E) 4 4 Apparatus TemporaryjointsasdefinedinEN2591601 LLSandLDSasdefinedinEN2591100 Conde
23、nsedwaterfromchamberwallsorceilingshallnotdriponthespecimens.Thetestchamber shallbedesignedsothatitstemperatureandrelativehumidityarecontrolled 5 Method 5.1 Initialmeasurements(ifapplicable) MeasuretheinsertionlossvalueinaccordingtoEN2591601insertionloss. Measurethematingandunmatingforcevaluesinacco
24、rdancewithEN2591408Matingandunmating forces. 5.2 Procedure TheattenuationshallbemonitoredthroughoutthetestinaccordancewithEN2591602,methodA. Thespecimensshallbeplacedinthetestchamber.Theprocedureshallconsistofthefollowing phases: phase1: within2h,thetemperatureofthetestchambershallberaisedto(65 3 )C
25、andtherelative humidityincreasedto(95 2 3 + - )%; phase2: theaboveconditionsshallbemaintainedfor6h; phase3: within16h,thetemperatureshallbeprogressivelyreducedto(38 4 0 + )Cwhiletherelative humidityismaintainedashighaspossibleandshallnotdecreasebelow85%. Thesethreephases(seefigure1)constituteonecycl
26、e. Thespecifiednumberofcyclesshallbeperformed. 5.3 Finalmeasurementsandrequirements(ifapplicable) Immediatelyafterthelastcycle,(unlessotherwisespecified),thespecimensshallbesubjectedtothe followingtestsequence: measurethematingandunmatingforcevaluesaccordingtoEN2591408Matingandunmating forces; exami
27、nethetestspecimenfordamageaccordingtoEN25916101,Visualexamination. Themeasuredvaluesshallnotexceedthespecifiedlimits.EN25916321:2002(E) 5 Figure1Basiccycle (C) 38 4 65 3 Relativehumidity (95 2 3 + - )% Relativehumidity 85%min. 1stphase 1stphase 3rdphase 2ndphase 1stcycle 2ndcycle 2hmax. 2hmax. 16h 6
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