1、Cables, electrical, aircraft use Test methods Part 40 1 : Accelerated ageing The European Standard EN 3475-401:2002 has the status ofa British Standard ICs 49.060 BS EN 347540 1 :2002 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 3475-401 12002 Amd. No. National forewo
2、rd Date Comments 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 04 February 2002 This British Standard is the official English language versio
3、n of The UKparticipation 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: EN 3475-40 112002. - - aid enquirers to understand the text; present to the
4、 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 promulgate them in the UK. - A list of organizations represented on this subcommittee can be obtained on reque
5、st to its secretary. Cr oss-r e fer enc e s 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 Correspondence Index”, or by using the “Find” facility
6、 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 not of itself confer immunity from legal obligation
7、s. 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. O BSI 04 February 2002 ISBN O 580 38367 9 EUROPEAN
8、STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3475-401 January 2002 ICs 49.060 English version Aerospace series - Cables, electrical, aircraft use - Test Methods - Part 401 : Accelerated ageing Srie arospatiale - Cbles lectriques usage aronautique - Mthodes dessai - Partie 401 : Vieillissement acclr L
9、uft- und Raumfahrt - Elektrische Leitungen fr Luftfahrt, Verwendung - Prfverfahren -Teil 401: Beschleunigte Alterung This European Standard was approved by CEN on 6 August 2001 CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this Eur
10、opean Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English,
11、 French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic,
12、Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FUR NORMUNG COMIT EUROPEN DE NORMALISATION Management Centre: rue de Stassar
13、t, 36 B-1050 Brussels O 2002 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3475-401:2002 E EN 3475-401 :2002 (E) Foreword This document (EN 3475-401 :2002) has been prepared by the European Association of Aerospace Manufacturers
14、(AECMA). 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 shall be given the
15、 status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2002, and conflicting national standards shall be withdrawn at the latest by July 2002. According to the CENKENELEC Internal Regulations, the national standards organizations of the fo
16、llowing countries are bound to implement this European Standard : Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. 2 EN 3475-401 :2002 (E) 1 Scope
17、 This standard specifies a method of determining the effects of accelerated ageing on a finished cable. It shall be used together with EN 3475-100. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references
18、are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest
19、 edition of the publication referred to applies. EN 3475-100 Aerospace series - Cables, electrical, aircraft use - Test methods - Part 100: General EN 3475-302 Aerospace series - Cables, electrical, aircraft use - Test methods - Part 302: Voltage proof test EN 3475-405 Aerospace series - Cables, ele
20、ctrical, aircraft use - Test methods - Part 405: Bending at ambient temperature 3 Preparation of specimens 3.1 Insulated conductor On a specimen 750 mm long, the two ends are stripped over 25 mm and the load defined in the technical specification is fixed to each end. 3.2 Screened and jacketed cable
21、s On a specimen 750 mm long, the jacket is stripped over 25 mm each end. 4 Apparatus A horizontal mandrel, whose diameter is given in the technical specification and a natural convection oven, shall be necessary for this test. 5 Method 5.1 Insulated conductor The central part of the specimen shall b
22、e placed on a horizontal mandrel so that the part of the covering between the conductor and the mandrel is under compression. See figure 1. 3 EN 3475-401 :2002 (E) Figure 1 5.2 Screened and jacketed cables The jacket shall be stripped at each end and the load defined in the technical specification s
23、hall be fixed to the screen (with insulated conductor inside) at both ends. The central portion of the specimen shall be placed over a horizontal mandrel such that the portion of jacket between the mandrel and the screen is under com pression. See figure 1. 5.3 Procedure The mandrel and specimen sha
24、ll be placed in a natural air convection oven for 168 h at the temperature given in the product standard. At the end of the cycle, cool the specimen and mandrel to ambient temperature and maintain them at this temperature for a least 1 h. Remove the applied loads, remove the cable from the mandrel a
25、nd straighten it. 5.4 The aged specimen shall pass the bending test at ambient temperature in accordance with EN 3475-405 and the voltage proof test in accordance with EN 3475-302. Req u i remen ts 4 BS EN 3475-401 12002 BSI 389 Chiswick High Road Lon don w4 4AL BSI is the independent national body
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