1、BRITISH STANDARD AEROSPACE SERIESBS EN 3475-415:2005Cables, electrical, aircraft use Test methods Part 415: Rapid change of temperatureThe European Standard EN 3475-415:2005 has the status of a British StandardICS 49.060g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44
2、g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 3475-415:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 10 February 2006 BSI 10 February 2006ISBN 0 580 47793 2
3、National forewordThis British Standard is the official English language version of EN 3475-415:2005. 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
4、 responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entit
5、led “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance
6、with a British Standard does 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 UK interests informed; monitor related internati
7、onal and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last i
8、ssued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 3475-415October 2005ICS 49.060English VersionAerospace series - Cables, electrical, aircraft use - Testmethods - Part 415: Rapid change of temperatureSrie arospatiale - Cbles lectriques u
9、sagearonautique - Mthodes dessais - Partie 415 : Variationrapide de tempratureLuft- und Raumfahrt - Elektrische Leitungen frLuftfahrtverwendung - Prfverfahren - Teil 415: SchnellerTemperaturwechselThis European Standard was approved by CEN on 12 September 2005.CEN members are bound to comply with th
10、e CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or
11、to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.
12、CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland a
13、nd United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3475-415:
14、2005: E2 Contents Page Foreword 3 1 Scope .4 2 Normative references .4 3 Preparation of specimens 4 4 Test method and requirements5 5 Requirements 6 EN 3475-415:20053 Foreword This European Standard (EN 3475-415:2005) has been prepared by the European Association of Aerospace Manufacturers - Standar
15、dization (AECMA-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European Standard sha
16、ll be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2006, and conflicting national standards shall be withdrawn at the latest by April 2006. Attention is drawn to the possibility that some of the elements of this documen
17、t may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Aus
18、tria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 3475-415:20054 1 Scope T
19、his product standard defines a test method to evaluate the performance of a coaxial cable after exposure to a rapid change of temperature. It shall be used together with EN 3475-100. 2 Normative references The following referenced documents are indispensable for the application of this document. For
20、 dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 3475-100, Aerospace series Cables, electrical, aircraft use Test methods Part 100: General. EN 3475-801, Aerospace series Cables, electrical
21、, aircraft use Test methods Part 801: Capacitance per unit length. EN 3475-806, Aerospace series Cables, electrical, aircraft use Test methods Part 806: Attenuation. 3 Preparation of specimens 3.1 Specimens First specimen: length is specified in the product standard. Second specimen: length = 1,5 m
22、(Specimen shall be cut from the specimen unit) 3.2 Conditioning The specimens shall not be bent with a radius less than 30 times overall diameter of the cable, during low or high temperature exposure. 3.3 Initial measurement On first specimen: capacitance per unit of length (EN 3475-801); attenuatio
23、n at 200 MHz (EN 3475-806). On second specimen: measure any difference in length which may exist between the ends of the dielectric and conductor. EN 3475-415:20055 4 Test method and requirements 4.1 Test The specimen shall be subjected to the following cycle for a total of three cycles. Figure 1 Te
24、mperature cycle 4.2 Temperature test requirement Unless otherwise specified, TA and TBare the maximum and the minimum operating temperatures defined in the product standard. After the conditioning period, remove the specimen from the heat chamber and condition at room temperature for four hours mini
25、mum. 4.3 Final measurement On first specimen: capacitance per unit of length (EN 3475-801); attenuation at 200 MHz (EN 3475-806). Time t (min) t1t1t31 cycle TBTAC A A : start of first cycle t1= 4 hours t24 hourst2EN 3475-415:20056 On second specimen: measurement of both ends of the specimen for shri
26、nkage or expansion of the dielectric relative to the conductor. 5 Requirements Maximum variation of capacitance as specified in the product standard. Maximum increase of attenuation as specified in the product standard. Maximum shrinkage or expansion after temperature cycle, from the initial value,
27、shall be less than the value required in the product standard. EN 3475-415:2005blankBS EN 3475-415:2005BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europ
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