1、BS EN 3745-516:2017Aerospace series Fibres and cables, optical, aircraft use T e s t m e t h o d sPart 516: Severe cable bend testBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 3745-516:2017 BRITISH STANDARDNational forewordThis British Standard is the UK impl
2、ementation of EN 3745-516:2017. It supersedes BS EN 3745-516:2012 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology.A list of organizations represented on this committee can be obtained on re
3、quest to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 94212 9 ICS 49.090 Compliance with a British
4、 Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 3745-516:2017EUROPEAN STANDARD NORME EUROPEN
5、NE EUROPISCHE NORM EN 3745-516 March 2017 ICS 49.090 Supersedes EN 3745-516:2012English Version Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 516: Severe cable bend test Srie arospatiale - Fibres et cbles optiques usage aronautique - Mthodes dessais - Partie 516:
6、Essai de courbure svre Luft- und Raumfahrt - Faseroptische Leitungen fr Luftfahrzeuge - Prfverfahren - Teil 516: Schwere Kabelbiegeprfung This European Standard was approved by CEN on 29 July 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditio
7、ns for giving this 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
8、 three official 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 standard
9、s bodies of Austria, 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, Serbia, Slovakia
10、, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means re
11、served worldwide for CEN national Members. Ref. No. EN 3745-516:2017 EBS EN 3745-516:2017EN 3745-516:2017 (E) 2 Contents Page European foreword 3 1 Scope 4 2 Normative references 4 3 Preparation of specimens 4 4 Apparatus. 4 5 Method 6 BS EN 3745-516:2017EN 3745-516:2017 (E) 3 European foreword This
12、 document (EN 3745-516:2017) 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
13、the Official Services 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 September 2017, and conflicting national standards shall be
14、withdrawn at the latest by September 2017. 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. This document supersedes EN 3745-516:2012.
15、According to the CEN-CENELEC Internal Regulations, the national standards 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, Ger
16、many, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 3745-516:2017EN 3745-516:2017 (E) 4 1 Scope This European Standard specif
17、ies a method of checking the break resistance and attenuation variation recovery of an optical cable subjected to severe bending under load. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For
18、 dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2591-100, Aerospace series Elements of electrical and optical connection Test methods Part 100: General EN 3745-100, Aerospace series Fibres
19、 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 examination EN 3745-301, Aerospace series Fibres and cables, optical, aircraft use Test methods Part 301: Attenuation 3 Preparation o
20、f specimens If not yet at standard test conditions, the specimens shall be subjected to standard test conditions and stabilized at these conditions for 24 h as defined in EN 2591-100. Type and length of fibre or cable. Load mass M to be applied to ensure contact between the cable and the edge of the
21、 metal bar. Radius(s) R of the bending edge. Number of turns N to rotate the cable 180 after each bend test. 4 Apparatus A Light Launch System (LLS) as defined in EN 2591-100. A Light Detection System (LDS) as defined in EN 2591-100. A flat metal bar with radius edge and loads required by the applic
22、able product standard. A typical arrangement is shown in Figure 1. BS EN 3745-516:2017EN 3745-516:2017 (E) 5 Key 1 Fibre optic cable 2 LLS 3 10 mm to 20 mm thick flat metal bar with radius edge R 4 Typical radius R = (0,25 0,01) mm or specified diameter defined in the product standard 5 Clamp 6 Load
23、 7 LDS Figure 1 BS EN 3745-516:2017EN 3745-516:2017 (E) 6 5 Method 5.1 Procedure a) Connect the specimen to the LLS and LDS. b) Attach the load mass (M) to the specimen as specified in the applicable product standard prior to mounting the specimen on the bend fixture. c) Zero the LDS to establish a
24、reference measurement. d) Mount the specimen on the bend fixture and gently apply the load to the specimen. e) After one (1) minute, measure the attenuation variation (EN 3745-301, method C) to ensure no fibre breakage. f) Remove the load from the cable and rotate the cable by 180 and slide the cabl
25、e by 30 cm not to repeat the next bending at the same location g) Repeat steps d) to f) for the number of rotations required by the applicable product standard. h) Straighten specimen and measure the attenuation variation after one (1) minute. 5.2 Final measurements and requirements Measure the resi
26、dual attenuation variation (EN 3745-301, method C) after removing the specimen from the test fixture to ensure no fibre breakage. Perform a visual examination according to EN 3745-201. This page deliberately left blankBSI is the national body responsible for preparing British Standards and other sta
27、ndards-related publications, information and services.BSI is incorporated by Royal Charter. British Standards and other standardization products are published by BSI Standards Limited.British Standards Institution (BSI)About usWe bring together business, industry, government, consumers, innovators a
28、nd others to shape their combined experience and expertise into standards -based solutions.The knowledge embodied in our standards has been carefully assembled in a dependable format and refined through our open consultation process. Organizations of all sizes and across all sectors choose standards
29、 to help them achieve their goals.Information on standardsWe can provide you with the knowledge that your organization needs to succeed. Find out more about British Standards by visiting our website at or contacting our Customer Services team or Knowledge Centre.Buying standardsYou can buy and down
30、load PDF versions of BSI publications, including British and adopted European and international standards, through our website at where hard copies can also be purchased. If you need international and foreign standards from other Standards Development Organizations, hard copies can be ordered from
31、our Customer Services team.Copyright in BSI publicationsAll the content in BSI publications, including British Standards, is the property of and copyrighted by BSI or some person or entity that owns copyright in the information used (such as the international standardization bodies) and has formally
32、 licensed such information to BSI for commercial publication and use.Save for the provisions below, you may not transfer, share or disseminate any portion of the standard to any other person. You may not adapt, distribute, commercially exploit, or publicly display the standard or any portion thereof
33、 in any manner whatsoever without BSIs prior written consent.Storing and using standardsStandards purchased in soft copy format: A British Standard purchased in soft copy format is licensed to a sole named user for personal or internal company use only. The standard may be stored on more than 1 devi
34、ce provided that it is accessible by the sole named user only and that only 1 copy is accessed at any one time. A single paper copy may be printed for personal or internal company use only.Standards purchased in hard copy format: A British Standard purchased in hard copy format is for personal or in
35、ternal company use only. It may not be further reproduced in any format to create an additional copy. This includes scanning of the document.If you need more than 1 copy of the document, or if you wish to share the document on an internal network, you can save money by choosing a subscription produc
36、t (see Subscriptions).Reproducing extractsFor permission to reproduce content from BSI publications contact the BSI Copyright & Licensing team.SubscriptionsOur range of subscription services are designed to make using standards easier for you. For further information on our subscription products go
37、to British Standards Online (BSOL) youll have instant access to over 55,000 British and adopted European and international standards from your desktop. Its available 24/7 and is refreshed daily so youll always be up to date. You can keep in touch with standards developments and receive substantial
38、discounts on the purchase price of standards, both in single copy and subscription format, by becoming a BSI Subscribing Member. PLUS is an updating service exclusive to BSI Subscribing Members. You will automatically receive the latest hard copy of your standards when theyre revised or replaced. To
39、 find out more about becoming a BSI Subscribing Member and the benefits of membership, please visit a Multi-User Network Licence (MUNL) you are able to host standards publications on your intranet. Licences can cover as few or as many users as you wish. With updates supplied as soon as theyre avail
40、able, you can be sure your documentation is current. For further information, email .RevisionsOur British Standards and other publications are updated by amendment or revision. We continually improve the quality of our products and services to benefit your business. If you find an inaccuracy or ambi
41、guity within a British Standard or other BSI publication please inform the Knowledge Centre.Useful ContactsCustomer ServicesTel: +44 345 086 9001Email (orders): Email (enquiries): SubscriptionsTel: +44 345 086 9001Email: Knowledge CentreTel: +44 20 8996 7004Email: Copyright & LicensingTel: +44 20 8996 7070Email: NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Group Headquarters389 Chiswick High Road London W4 4AL UKBSI Back Cover.indd 1 27/01/2016 14:20
