1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 3745-517:2012Aerospace series Fibres andcables, optical, aircraft use Test methodsPart 517: Cable tie clamping testCopyright European Committee for Standardization Provided
2、 by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 3745-517:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 3745-517:2012.The UK participation in its preparation was entrusted to TechnicalC
3、ommittee ACE/6, Aerospace avionic electrical and fibre optictechnology.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplica
4、tion. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 77592 5ICS 49.090Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on
5、 31 July 2012.Amendments issued since publicationDate Text affectedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 3745-517:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE
6、 NORM EN 3745-517 July 2012 ICS 49.090 English Version Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 517: Cable tie clamping test Srie arospatiale - Fibres et cbles optiques usage aronautique - Mthodes dessais - Partie 517: Essai de serrage par colliers de frettag
7、e Luft- und Raumfahrt - Faseroptische Leitungen fr Luftfahrzeuge - Prfverfahren - Teil 517: Klemmprfung mit Kabelbindern This European Standard was approved by CEN on 23 March 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving th
8、is 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 CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official
9、versions (English, 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Aust
10、ria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Swede
11、n, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Me
12、mbers. Ref. No. EN 3745-517:2012: ECopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 3745-517:2012EN 3745-517:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative referenc
13、es 43 Preparation of specimens .44 Apparatus .45 Method 5Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 3745-517:2012EN 3745-517:2012 (E) 3 Foreword This document (EN 3745
14、-517:2012) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). 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 Servi
15、ces of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2013, and conflicting national standards shall be withdrawn at the lat
16、est by January 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national s
17、tandards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania
18、, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without lic
19、ense from IHS-,-,-BS EN 3745-517:2012EN 3745-517:2012 (E) 4 1 Scope This European Standard specifies a method of determining the attenuation variation of an optical cable when clamped to a mandrel with cable ties, simulating the condition in an installed harness. 2 Normative references The following
20、 documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2591-100, Aerospa
21、ce series Elements of electrical and optical connection Test methods Part 100: General EN 3745-100, Aerospace series Fibres and cables, optical, aircraft use Test methods Part 100: General EN 3745-201, Aerospace series Fibres and cables, optical, aircraft use Test methods Part 201: Visual examinatio
22、n EN 3745-301, Aerospace series Fibres and cables, optical, aircraft use Test methods Part 301: Attenuation EN 4056-001, Aerospace series Cable ties for harnesses Part 001: Technical specification 3 Preparation of specimens 3.1 The fibre ends shall conform to the fibre end preparation criteria speci
23、fied in EN 2591-100. 3.2 The length of fibre to be tested shall be in accordance with the applicable product standard. 3.3 The specimens shall be subjected to standard test conditions and stabilized at these conditions for 24 h as defined in EN 2591-100. 4 Apparatus A Light Launch System (LLS) and L
24、ight Detection System (LDS) as defined in EN 2591-100; A mandrel with a diameter specified in the applicable product standard. A typical arrangement is shown in Figure 1. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networkin
25、g permitted without license from IHS-,-,-BS EN 3745-517:2012EN 3745-517:2012 (E) 5 Key 1 Fibre optic cable 2 Nylon straps 3 Mandrel Figure 1 5 Method 5.1 Procedure a) Measure and record the optical transmittance of the specimen for both wavelengths 850 nm and 1 300 nm while the specimen is mounted o
26、n the test mandrel to establish a reference measurement. b) Install the specified number of miniature self clinching nylon straps over the cable and mandrel at a separation distance specified in the applicable product standard. c) Using the hand tool specified in EN 4056-001, tighten the straps to t
27、he tension value specified by the applicable product standard. d) After tightening the nylon straps, measure and record the final optical transmittance of the specimen at both wavelengths 850 nm and 1 300 nm. 5.2 Final measurements and requirements Measure the residual attenuation variation (EN 3745
28、-301, method C) after removing the specimen from the test fixture to ensure no fibber breakage. Perform a visual examination according to EN 3745-201. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without
29、license from IHS-,-,-This page deliberately left blankCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-This page deliberately left blankCopyright European Committee for Standardiz
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