1、BRITISH STANDARD AEROSPACE SERIES Cables, electrical, aircraft use Test methods Part 301 : Ohmic resistance per unit length The European Standard EN 3475-301:2002 has the status ofa British Standard ICs 49.060 BS EN 3475-30 1 12002 Wk present to the responsible European committee any enquiries on th
2、e 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 The Bri
3、tish 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. A Briti
4、sh 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 a front
5、 cover, an inside front cover, the EN title page, pages 2 and 3 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 38373 3 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3475-301 January 2002 ICs 49
6、.060 English version Aerospace series - Cables, electrical, aircraft use - Test methods - Part 301 : Ohmic resistance per unit length Srie arospatiale - Cbles lectriques usage aronautique - Mthodes dessai - Partie 301: Rsistance lectrique linique Luft- und Raumfahrt - Elektrische Leitungen fr Luftfa
7、hrt, Verwendung - Prfverfahren - Teil 301 : Leiterwiderstand This European Standard was approved by CEN on 5 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
8、 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
9、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
10、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
11、on in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3475-301:2002 E EN 3475-301 :2002 (E) Foreword This document (EN 3475-301 :2002) has been prepared by the European Association of Aerospace Manufacturers (AECMA). After enquiries and votes carried out in accorda
12、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
13、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
14、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 3475-301 :2002 (E) 1 Scope This standard specifies a method of measuring electrical
15、 resistance per unit length. 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
16、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
17、es - Cables, electrical, aircraft use - Test methods - Part 100: General 3 Preparation of specimens The specimens, having a minimum length of 1 m, shall be taken from finished cable. 4 Method The resistance of the conductor shall be stabilized to the ambient temperature and measured with the use of
18、a suitable bridge. If the local ambient temperature 8 is not 20 “C the measured resistance in ohms, Re, shall be corrected to 20 “C by use of the following formulae. R= R I + 0,004 (e- 2011 except for high strength copper alloy, where: R= R I + 0,0035 (e- 2011 5 Req u i remen t The resistance value,
19、 corrected to 20 “C shall be less than or equal to the value stated in the relevant product standard. 3 BS EN 3475-301 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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