1、Cables, electrical, aircraft use Test methods Part 504: Torsion The European Standard EN 3475-504:2002 has the status of a British Standard ICs 49.060 BS EN 3475-50412002 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 3475-50412002 Amd. No. National foreword Date Commen
2、ts 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 of The UKpar
3、ticipation 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 3475-50412002. - - aid enquirers to understand the text; present to the responsible Eu
4、ropean 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 to its secre
5、tary. 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 the BSI Sta
6、ndards 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. Summary of p
7、ages 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 38380 6 EUROPEAN STANDARD NORME
8、EUROPENNE EUROPISCHE NORM EN 3475-504 January 2002 ICs 49.060 English version Aerospace series - Cables, electrical, aircraft use - Test methods - Part 504: Torsion Srie arospatiale - Cbles lectriques usage aronautique - Mthodes dessai - Partie 504: Torsion Luft- und Raumfahrt - Elektrische Leitunge
9、n fr Luftfahrt, Verwendung - Prfverfahren -Teil 504: Torsion 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 European Standard the status of a national standard without
10、 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, French, German). A version in any other language made b
11、y 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, Denmark, Finland, France, Germany, Greece, Iceland, Irel
12、and, 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 Stassart, 36 B-1050 Brussels O 2002 CEN All rights of exploitati
13、on in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3475-504:2002 E EN 3475-504:2002 (E) Foreword This document (EN 3475-504:2002) has been prepared by the European Association of Aerospace Manufacturers (AECMA). After enquiries and votes carried out in accordanc
14、e 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 status of a national standard, either by publication of an
15、 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 following countries are bound to implement this European Stan
16、dard : 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 3475-504:2002 (E) 1 Scope This standard specifies a method of checking the resistance
17、 to damage under torsion of insulated conductors or finished cables. 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 are cited at the appropriate places
18、 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 edition of the publication referre
19、d to applies. EN 3475-100 Aerospace series - Cables, electrical, aircraft use - Test methods - Part 100: General 3 Preparation of a specimen A specimen 250 mm long is pre-aged for 50 h in an oven at temperature T4 (specified in the product standard). 4 Apparatus The apparatus shall consist basically
20、 of two clamps for the specimen, axially aligned and face to face, and at such a distance that the specimen is taut (see figure 1). One of the clamps shall be able to turn 360“ on both sides of the specimen axis, so that the effects of torsion and untwisting are applied on the taut test piece. The o
21、ther clamp shall be capable of movement parallel to the axis of the specimen, so that it is kept taut by means of a load defined in the technical specification. It shall not rotate. The apparatus shall be placed in a chamber at temperature TB, specified in the product standard 3 EN 3475-504:2002 (E)
22、 -4 1 Key 1 Sliding attachment 2 Specimen 3 Rotating attachment 4 Counter-weight 5 Heating chamber Figure 1 - General arrangement 5 Method 5.1 Procedure The aged specimen shall be secured in the torsion apparatus and stretched by a load defined in the technical specification. The whole unit shall th
23、en be placed in a chamber brought up to a temperature T3 and the torsion tests shall be carried out at this temperature. Each torsion cycle corresponds to the rotation of the specimen 360“ in one direction, then 720“ in the other direction and once more 360“ in the initial direction, bringing the sp
24、ecimen back to position zero. 5.2 100 cycles shall be carried out in this manner at a speed of five to six cycles per minute. The equipment shall then be removed from the heat chamber and the specimen from the attachment device. A visual inspection shall then be made of the specimen to detect any po
25、ssible debonding from the insulation. Any debonding of layers either along the insulation or at the ends shall be considered as a defect. Req u i remen ts 4 BS EN 3475-50412002 BSI 389 Chiswick High Road Lon don w4 4AL BSI is the independent national body responsible for preparing British Standards.
26、 It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Re vi si ons British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constan
27、t 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 Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel:
28、+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 standards. Buying standards Orders for all BSI, international and foreign standards publications should be addresse
29、d to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: orders&-. Standards are also available from the BSI website at http:/www.bsi-. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as
30、British Standards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which giv
31、e details on all its products and services. Contact the Information Centre. Tel: +44 (0)20 8996 71 11. Fax: +44 (0)20 8996 7048. Email: infomi-. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For detail
32、s ofthese and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002. Fax: +44 (0)20 8996 700 1. Email: membershipbsi-. Information regarding online access to British Standards via British Standards Online can be found at http:/www.bsi- Further information about BSI is available
33、on the BSI website at http:/www.bsi-. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, ofthe publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, sto
34、red 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 the course of implementing the standard, ofnecessary details such as symbols, and size, type or grade designations. Ifthese details are to be used for any other purpose than implementation then the prior written permission ofBSI 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: copyright&-.
