1、Cables, electrical, aircraft use Test methods Part 502: Notch propagation The European Standard EN 3475-502:2002 has the status of a British Standard ICs 49.060 NO COPYiNG .VITHOlJT RST PRRMTSSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 3475-50212002 BS EN 3475-50212002 Amd. No. National foreword
2、 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 11 February 2002 This British Standard is the official English language version
3、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 3475-50212002. - - aid enquirers to understand the text; present to the res
4、ponsible 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 request t
5、o 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 of
6、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 obligations. S
7、ummary 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 11 February 2002 ISBN O 580 38382 2 EUROPEAN STAN
8、DARD NORME EUROPENNE EUROPISCHE NORM EN 3475-502 January 2002 ICs 49.060 English version Aerospace series - Cables, electrical, aircraft use - Test methods - Part 502: Notch propagation Srie arospatiale - Cbles lectriques usage aronautique - Mthodes dessai - Partie 502: Rsistance la propagation de l
9、entaille Luft- und Raumfahrt - Elektrische Leitungen fr Luftfahrt, Verwendung - Prfverfahren - Teil 502: Weitereifestigkeit 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 t
10、his European 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 (E
11、nglish, 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 Rep
12、ublic, 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 FR NORMUNG COMIT EUROPEN DE NORMALISATION Management Centre: rue de S
13、tassart, 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 3475-502:2002 E EN 3475-502:2002 (E) Foreword This document (EN 3475-502:2002) has been prepared by the European Association of Aerospace Manufactur
14、ers (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
15、 the 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 th
16、e following 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 3475-502:2002 (E) 1 Sc
17、ope This standard specifies a method of evaluating an insulation resistance to propagation of surface notch. 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 refere
18、nces 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 l
19、atest edition of the publication referred to applies. EN 3475-1 O0 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 3 Preparation of specimens Each end
20、of a specimen of 500 mm length of cable is stripped over 25 mm The insulation or jacket is cut at 90“ to the axis of the cable to the depth specified in the product standard approximately in the centre of the specimen. This cut shall be made with a razor blade fitted in a tool allowing control of th
21、e depth of the cut (see figure 1). 4 Apparatus Figure 1 - Principle of blade holder 3 EN 3475-502:2002 (E) 5 Method 5.1 Procedure The specimen cut in this way shall be wound at least 360“ round a mandrel of diameter six times that of the maximum diameter of the cable specified in the product standar
22、d, with the cut on the outside. The specimen shall then be removed from the mandrel and shall withstand the voltage proof test defined in EN 3475-302. 5.2 No puncturing of the insulation or jacket shall be allowed. Req u i remen ts 4 BS EN 3475-50212002 BSI 389 Chiswick High Road Lon don w4 4AL BSI
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