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、g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Mon May 08 03:36:17 BST 2006, Uncontrolled Copy, (c) BSIBS EN 3475-415:2005This British Standard was published under the authority of the Standards Pol
3、icy and Strategy Committee on 10 February 2006 BSI 10 February 2006ISBN 0 580 47793 2National 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 a
4、nd fibre optic technology, to Subcommittee ACE/6/-/2, Aerospace Cables, which has the 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 r
5、eferred to in this document may be found in the BSI Catalogue under the section entitled “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 pro
6、visions of a contract. Users are responsible for its correct application. Compliance 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 interpretatio
7、n, or proposals for change, and keep UK interests informed; monitor related international 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 B
8、SI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, na, Mon May 08 03:36:17 BST 2006, Uncontrolled Copy, (c) BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 3475-415October 2
9、005ICS 49.060English VersionAerospace series - Cables, electrical, aircraft use - Testmethods - Part 415: Rapid change of temperatureSrie arospatiale - Cbles lectriques usagearonautique - Mthodes dessais - Partie 415 : Variationrapide de tempratureLuft- und Raumfahrt - Elektrische Leitungen frLuftfa
10、hrtverwendung - Prfverfahren - Teil 415: SchnellerTemperaturwechselThis European Standard was approved by CEN on 12 September 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standa
11、rd without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other langu
12、age 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.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germa
13、ny, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Cen
14、tre: 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 3475-415:2005: ELicensed Copy: Wang Bin, na, Mon May 08 03:36:17 BST 2006, Uncontrolled Copy, (c) BSI2 Contents Page Foreword 3 1 Scope .4
15、2 Normative references .4 3 Preparation of specimens 4 4 Test method and requirements5 5 Requirements 6 EN 3475-415:2005Licensed Copy: Wang Bin, na, Mon May 08 03:36:17 BST 2006, Uncontrolled Copy, (c) BSI3 Foreword This European Standard (EN 3475-415:2005) has been prepared by the European Associat
16、ion of Aerospace Manufacturers - Standardization (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 present
17、ation to CEN. This European Standard shall 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 t
18、hat some of the elements of this document 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
19、to implement this European Standard: 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 and the Uni
20、ted Kingdom. EN 3475-415:2005Licensed Copy: Wang Bin, na, Mon May 08 03:36:17 BST 2006, Uncontrolled Copy, (c) BSI4 1 Scope This 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 34
21、75-100. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 3475-100, Aeros
22、pace series Cables, electrical, aircraft use Test methods Part 100: General. EN 3475-801, Aerospace series Cables, electrical, 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 Prepara
23、tion of specimens 3.1 Specimens First specimen: length is specified in the product standard. Second specimen: length = 1,5 m (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 h
24、igh temperature exposure. 3.3 Initial measurement On first specimen: capacitance per unit of length (EN 3475-801); attenuation 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 3475-415:2005Licensed Cop
25、y: Wang Bin, na, Mon May 08 03:36:17 BST 2006, Uncontrolled Copy, (c) BSI5 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 Temperature cycle 4.2 Temperature test requirement Unless otherwise specified, TA and TBare
26、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 minimum. 4.3 Final measurement On first specimen: capacitance per unit of length (EN 3475-801)
27、; attenuation at 200 MHz (EN 3475-806). Time t (min) t1t1t31 cycle TBTAC A A : start of first cycle t1= 4 hours t24 hourst2EN 3475-415:2005Licensed Copy: Wang Bin, na, Mon May 08 03:36:17 BST 2006, Uncontrolled Copy, (c) BSI6 On second specimen: measurement of both ends of the specimen for shrinkage
28、 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, shall
29、 be less than the value required in the product standard. EN 3475-415:2005Licensed Copy: Wang Bin, na, Mon May 08 03:36:17 BST 2006, Uncontrolled Copy, (c) BSIblankLicensed Copy: Wang Bin, na, Mon May 08 03:36:17 BST 2006, Uncontrolled Copy, (c) BSIBS EN 3475-415:2005BSI389 Chiswick High RoadLondonW
30、4 4ALBSI British Standards InstitutionBSI 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.RevisionsBritish Standards are updated by amendment or revision.
31、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 using this British Standard would inform the Secr
32、etary 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 automatically receive the latest editions of sta
33、ndards.Buying standardsOrders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: ordersbsi-. Standards are also available from the BSI website at http:/www.bsi-.In response to orders for i
34、nternational standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested.Information on standardsBSI provides a wide range of information on national, European and international standards through its Library and its
35、Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel: +44 (0)20 8996 7111. Fax: +44 (0)20 8996 7048. Email: infobsi-.Subscribing members of BSI are kept up to date
36、with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002. Fax: +44 (0)20 8996 7001. Email: membershipbsi-.Information regarding online access to British Standa
37、rds via British Standards Online can be found at http:/www.bsi- information about BSI is available on the BSI website at http:/www.bsi-.CopyrightCopyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Excep
38、t as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI.This does not preclude the free use, in th
39、e course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained.Details and advice can be obtained from the Copyright & Licensing Manager. Tel: +44 (0)20 8996 7070. Fax: +44 (0)20 8996 7553. Email: copyrightbsi-.Licensed Copy: Wang Bin, na, Mon May 08 03:36:17 BST 2006, Uncontrolled Copy, (c) BSI
