EN 3745-517-2017 en Aerospace series - Fibres and cables optical aircraft use - Test methods - Part 517 Cable tie clamping test《航空航天系列-光纤和光缆-飞机用光学-试验方法-第517部分 电缆夹持试验》.pdf

1、BS EN 3745-517:2017Aerospace series Fibres and cables, optical, aircraft use T e s t m e t h o d sPart 517: Cable tie clamping testBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 3745-517:2017 BRITISH STANDARDNational forewordThis British Standard is the UK imp

2、lementation of EN 3745-517:2017. It supersedes BS EN 3745-517:2012 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology.A list of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 r

3、equest 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 94213 6 ICS 49.090 Compliance with a Britis

4、h 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 3745-517:2017EUROPEAN STANDARD NORME EUROPE

5、NNE EUROPISCHE NORM EN 3745-517 March 2017 ICS 49.090 Supersedes EN 3745-517:2012English 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

6、: Essai de serrage par colliers de frettage Luft- und Raumfahrt - Faseroptische Leitungen fr Luftfahrzeuge - Prfverfahren - Teil 517: Klemmprfung mit Kabelbindern This European Standard was approved by CEN on 29 July 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations whi

7、ch stipulate the conditions 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 Eu

8、ropean Standard exists in 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

9、are the national standards 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,

10、Romania, Serbia, Slovakia, 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

11、 form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3745-517:2017 EBS EN 3745-517:2017EN 3745-517:2017 (E) 2 Contents Page European foreword 3 1 Scope 4 2 Normative references 4 3 Preparation of specimens 4 4 Apparatus. 5 5 Method 6 BS EN 3745-517:2017EN 3745-517:2017 (E)

12、 3 European foreword This document (EN 3745-517:2017) 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 N

13、ational Associations and 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 nat

14、ional standards shall be 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 supe

15、rsedes EN 3745-517:2012. 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

16、of Macedonia, France, Germany, 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 3745-517:2017EN 3745-517:2017 (E) 4 1 Scope This

17、 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 documents, in whole or in part, are normatively referenced in this docu

18、ment 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, Aerospace series Elements of electrical and optical connection Test methods Par

19、t 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 EN 4056-003, Aerospace series Cable ties for harnesses Part 003: P

20、lastic cable ties, operating temperatures 65 C to 105 C and 65 C to 150 C Product standard 3 Preparation of specimens 3.1 The fibre ends shall conform to the fibre end preparation criteria specified in EN 2591-100. 3.2 The length of fibre to be tested shall be in accordance with the applicable produ

21、ct 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. 3.4 The following details shall be specified if not already included in the product standard. Minimum number of cable ties, 6. Spacing between the cabl

22、e ties shall be defined. If not the distance shall be 150 mm. Setting of the cable tie fitting tool. Mandrel diameter. Number of specimens (minimum 3) The wavelengths to be measured if not 1300 nm and 850 nm. BS EN 3745-517:2017EN 3745-517:2017 (E) 5 4 Apparatus A Light Launch System (LLS) and Light

23、 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. Key 1 Fibre optic cable 2 Cable tie 3 Mandrel Figure 1 Cross sectional view Key 1 Mandrel 2 Fibre optic cable 3 Head of cable tie sha

24、ll be positioned on the mandrel Figure 2 BS EN 3745-517:2017EN 3745-517:2017 (E) 6 5 Method 5.1 Procedure a) Measure and record the optical transmittance of the specimen for both wavelengths 850 nm and 1300 nm while the specimen is aligned on the test mandrel to establish a reference measurement. b)

25、 Apply the specified number of cable tie type EN 4056-003 type 1, size code S or equivalent to the cable sample under test and mandrel, as shown in Figure 2. The cable ties are to be positioned at distance specified in the product standard or at 150 mm if not specified. c) Using the applicable fitti

26、ng tool specified in MS 90387 for the size of cable tie being used, tighten the cable tie to the required tension as detailed in the product standard. The head of the cable tie shall be located according to Figure 2. d) Leave the assembly to stand for 15 minutes (to allow the cable tie to relax) the

27、n measure and record the final optical transmittance of the specimen at both wavelengths 850 nm and 1300 nm. e) After completing section d), remove the cable ties and measure the final optical transmittance of the specimen at both wavelengths 850 nm and 1300 nm when the specimen is removed from the

28、test fixture. 5.2 Final measurements and requirements Measure the initial and residual attenuation variation using EN 3745-301, method C. Starting with a reference measurement before setting up the test assembly. After the period of test remove the specimen from the test fixture and take a second me

29、asurement within one minute. Take a final reading after 1 h to determine residual attenuation, if any. 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 standards-related publications

30、, 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 and others to shape their co

31、mbined 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 to help them achieve their

32、 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 download PDF versions of BSI pu

33、blications, 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 our Customer Services team.

34、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 licensed such information

35、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 in any manner whatsoever w

36、ithout 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 device provided that it is acce

37、ssible 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 internal company use only. It

38、 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 product (see Subscriptions).Repro

39、ducing 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 to British Standards Onlin

40、e (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 discounts on the purchase p

41、rice 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 find out more about becomi

42、ng 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 available, you can be sure your

43、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 ambiguity within a British Stan

44、dard 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