1、BRITISH STANDARD AEROSPACE SERIES Cables, electrical, aircraft use Test methods Part 503: Scrape abrasion The European Standard EN 3475-503:2002 has the status of a British Standard ICs 49.060 BS EN 3475-503 12002 BS EN 3475-50312002 Amd. No. National foreword Date Comments This British Standard, ha
2、ving 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 UKparticipation in its preparatio
3、n 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 3475-50312002. - - aid enquirers to understand the text; present to the responsible European committee any enquirie
4、s 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 secretary. Cr oss-r e fer enc e s
5、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 Standards Electronic Catalogue.
6、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 pages This document comprises
7、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 38381 4 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN
8、3475-503 January 2002 ICs 49.060 English version Aerospace series - Cables, electrical, aircraft use - Test methods - Part 503: Scrape abrasion Srie arospatiale - Cbles lectriques usage aronautique - Mthodes dessai - Partie 503: Abrasion par raclage Luft- und Raumfahrt - Elektrische Leitungen fr Luf
9、tfahrt, Verwendung - Prfverfahren - Teil 503: Abriebfestigkeit 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 witho
10、ut 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
11、 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, Denmark, Finland, France, Germany, Greece, Iceland, Ir
12、eland, 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 exploita
13、tion in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3475-503:2002 E EN 3475-503:2002 (E) Foreword This document (EN 3475-503:2002) has been prepared by the European Association of Aerospace Manufacturers (AECMA). After enquiries and votes carried out in accorda
14、nce 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
15、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 following countries are bound to implement this European St
16、andard : 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 3475-503:2002 (E) 1 Scope This standard specifies a method of measuring the resista
17、nce to abrasion by scraping. 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 in the text and the publications are li
18、sted 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 referred to applies. EN 3475-100 Aerospace seri
19、es - Cables, electrical, aircraft use - Test methods - Part 100: General 3 Preparation of specimens Specimens 750 mm long shall be taken from finished cables or insulated conductors. 4 Apparatus The apparatus (see figure 1) shall consist of a device designed to wear the surface of the insulation par
20、allel to the cable axis, over a length equal to the travel (IO f 1) mm at a frequency of (55 f 5) cycles per minute. 5 Method 5.1 of the cable. This test shall be performed at ambient temperature and at the maximum operating temperature 5.2 leakage detector between the moveable blade and the conduct
21、or. This test device shall be provided with a counter and an automatic stop, controlled by a current 5.3 Procedure The cable specimen is firmly fixed to the support by means of a cable clamp. The needle holder shall be subjected to a load specified in the product standard. Each specimen shall underg
22、o six tests and be moved 100 mm between each test and turned at an angle of go“, always in the same direction. 5.4 The insulation or the jacket shall resist at least 100 cycles (arithmetic mean), one cycle consisting of a backward and forward movement of the needle. Scrape abrasion resistance shall
23、be defined as the number of complete cycles required for the needle to completely wear through the insulation or the jacket and to stop the equipment. Req u i remen ts 3 EN 3475-503:2002 (E) 1 4 0 (0,50 i 0.01) mm / Key 1 Mechanism 2 Counter mass 3 Electrical insulation 4 Mass 5 Travel (IO f 1) mm 6
24、 Needle holder 7 Cable clamp 8 Cable on test 9 Anvil (low thermal mass) Figure 1 - General arrangement 4 BS EN 3475-503 12002 BSI 389 Chiswick High Road Lon don w4 4AL BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and
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