BS EN 50289-3-13-2003 Communication cables - Specifications for test methods - Mechanical test methods - Aeolian vibration《通信电缆 试验方法规范 机械试验方法 风成振动》.pdf

《BS EN 50289-3-13-2003 Communication cables - Specifications for test methods - Mechanical test methods - Aeolian vibration《通信电缆 试验方法规范 机械试验方法 风成振动》.pdf》由会员分享，可在线阅读，更多相关《BS EN 50289-3-13-2003 Communication cables - Specifications for test methods - Mechanical test methods - Aeolian vibration《通信电缆 试验方法规范 机械试验方法 风成振动》.pdf（12页珍藏版）》请在麦多课文档分享上搜索。

1、BRITISH STANDARD BS EN 50289-3-13: 2003 Communication cables Specifications for test methods Part 3-13: Mechanical test methods Aeolian vibration The European Standard EN 50289-3-13:2003 has the status of a British Standard ICS 33.120.10 BS EN 50289- 3-13:2003 This British Standard, was published un

2、der the authority of the Standards Policy and Strategy Committee on 8 September 2003 BSI 8 September 2003 ISBN 0 580 42582 7 National foreword This British Standard is the official English language version of EN 50289-3-13:2003. The UK participation in its preparation was entrusted by Technical Comm

3、ittee EPL/46, Cables, wires, waveguides, R.F. connectors, R.F. and microwave passive components and accessories, to Subcommittee EPL/46/1, Communication cables, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cros

4、s-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of

5、British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; pr

6、esent to the responsible international/European committee any enquiries 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. Summary of pages This document comprises a front cover, a

7、n inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 50289-3-13 NORME EUROPENNE EUR

8、OPISCHE NORM August 2003 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2003 CENELEC - All rights of exploitation in any form a

9、nd by any means reserved worldwide for CENELEC members. Ref. No. EN 50289-3-13:2003 E ICS 33.120.10 English version Communication cables - Specifications for test methods Part 3-13: Mechanical test methods - Aeolian vibration Cbles de communication - Spcification des mthodes dessais Partie 3-13: Mth

10、odes dessais mcaniques - Vibration olienne Kommunikationskabel - Spezifikationen fr Prfverfahren Teil 3-13: Mechanische Prfverfahren - Seilschwingen This European Standard was approved by CENELEC on 2003-04-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipu

11、late 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 Central Secretariat or to any CENELEC member. This European Standar

12、d exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national

13、 electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lithuania, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EN 50289-3-13:2003 2 Foreword This Euro

14、pean Standard was prepared by the Technical Committee CENELEC TC 46X, Communication cables. The text of the draft was submitted to the Unique Acceptance Procedure and was accepted by CENELEC as EN 50289-3-13 on 2003-04-01. The following dates were fixed: - latest date by which the EN has to be imple

15、mented at national level by publication of an identical national standard or by endorsement (dop) 2004-04-01 - latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2006-04-01 This European Standard has been prepared under the European Mandate M/212 given to

16、CENELEC by the European Commission and the European Free Trade Association. _ 3 EN 50289-3-13:2003 Contents 1 Scope. 4 2 Normative references . 4 3 Definitions 4 4 Test method. 4 4.1 Sample. 4 4.2 Equipment.4 4.3 Procedure.5 4.4 Details to be specified . 6 5 Requirements. 6 6 Test report 6 Figure 1

17、Typical test arrangement for aeolian vibration test. 8 EN 50289-3-13:2003 4 1 Scope This Part 3-13 of EN 50289 details the method of test to determine the ability of exposed overhead cables used in analogue and digital communication systems to withstand dynamic stresses similar to those imposed by l

18、aminar wind flow induced vibrations in overhead lines. It is to be read in conjunction with Part 3-1 of EN 50289, which contains essential provisions for its application. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. The

19、se normative references are cited at the appropriate places in the text and the publications are listed 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 undat

20、ed references the latest edition of the publication referred to applies (including amendments). EN 50289-3-1 2001 Communication cables Specifications for test methods Part 3-1: Mechanical test methods General requirements EN 50290-1-2 1)Communication cables Part 1-2: Definitions 3 Definitions For th

21、e purposes of this European Standard the definitions of EN 50290-1-2 apply. 4 Test method 4.1 Sample The minimum length of the test sample shall be 50 m unless otherwise define in the relevant specification. The cable ends are prepared in order to allow transmitted electrical or optical power contro

22、l in one or several fibres (as specified in the relevant specification) or in conductors during the test. The minimum test length of the optical fibres shall be 100 m. If necessary, fibres have to be spliced at the cable ends. 4.2 Equipment The apparatus consists of test set up (a typical arrangemen

23、t is shown in Figure 1), electronically controlled shaker, dynamometer, load cell, calibrated beam or other device to measure cable tension. 1)At draft stage. 5 EN 50289-3-13:2003 Optical cables Light source with a nominal wavelength of 1 550 nm or 1 310 nm in conjunction with a light power meter, a

24、ble to perform optical power measurements. Light source with a nominal wavelength of 1 550 nm or 1 310 nm in conjunction with a light power meter, able to measure power oscillation in the bandwidth range of 0 Hz to 300 Hz minimum. OTDR, if required in the detail specification. Copper cables Network

25、analyser in the frequency range of interest. Tester for continuity. 4.3 Procedure The test sample shall be terminated at both ends prior to tensioning in a manner such that the cable elements are maintained in a condition representative of the normal installation conditions. A dynamometer, load cell

26、, calibrated beam or other device shall be used to measure cable tension. Some means should be provided to maintain constant tension to allow for temperature fluctuations during the testing. The cable shall be loaded to approximately 15 % to 25 % of the rated maximum tensile load for the cable as gi

27、ven in the relevant specification unless otherwise stated in accordance with particular use conditions. The overall span between system terminations shall be a minimum of 30 m. The minimum active span should be approximately 20 m, with a suitable suspension assembly located approximately two thirds

28、of the distance between the two dead-end assemblies. Longer active and / or back spans may be used. It shall be supported at a height such that the static sag angle of the cable to horizontal is (1,5 0,5) in the active span. Means shall be provided for measuring and monitoring the mid-loop (antinode

29、) vibration amplitude at a free loop, not a support loop. An electronically controlled shaker shall be used to excite the cable in the vertical plane. The shaker armature shall be securely fastened to the cable so it is perpendicular to the cable in the vertical plane. The shaker should be located i

30、n the span to allow for a minimum of six vibration loops between the suspension assembly and the shaker. The test shall be carried out at one or more resonance frequencies in the frequency range for the given wind conditions. Aeolian vibration is normally experienced under laminar wind flows of 0,5

31、m/s to 7 m/s. The following equations (1) and (2) apply. EN 50289-3-13:2003 6 The frequency of vibration f (Hz) is proportional to the wind velocity v (m/s) and inversely proportional to the cable diameter D (m) and is given by the formula: f = k v/D Hz (1) where k is Strouhal constant (0,2 for aeri

32、al cables and conductors). The wavelength () of vibration (equal to 2 loop lengths) is given by: = 1/f T/m m (2) where T is the cable tension (N); m is the mass / unit length (kg/m). NOTE If required due to the nature of cable design an overtension should be applied to ensure the cable is free of in

33、itial stresses. Therefore, in the initial stages the test span requires continuous attention and monitoring of the test parameters until the test span is stabilised. 4.4 Details to be specified The detail specification shall include the following: a) length of spans; b) characteristics of the suspen

34、sion and anchoring devices used; c) cable installation tension, including any overtension if applied during the first phase; d) frequency or wavelength at which optical monitoring is conducted; e) mass / unit length and diameter of the cable. 5 Requirements The acceptance criteria for the test shall

35、 be stated in the relevant specification. Typical failure modes include any temporary or permanent damage to the cable or any of the component parts, or change, in optical or electrical characteristics greater than the value specified in the relevant specification. 6 Test report The test report shal

36、l include the following: characteristics of the vibration test stand; length of spans; characteristics of the suspension and anchoring devices used; cable installation tension, including any overtension coefficient if applied during the first phase; length of cable and fibres tested (characteristics

37、 of the splices between fibres if they exist); frequency or wavelength at which power monitoring is conducted; 7 EN 50289-3-13:2003 vibration mode / characteristics maintained during the test; preparation of ends; characteristics of measuring equipment including the type of measuring sets and launch

38、ing conditions; ambient temperature and humidity during the test; pass/fail criteria. EN 50289-3-13:2003 8 Minimum 20 m Minimum 30 m Minimum 10 m 7 8 2 4 1 3 5 A 6 B 4 3 C 1Key 1 End abutment 7 Meter - in 2 Load cell 8 Meter - out 3 Intermediate abutment 4 Dead end assembly A Active span 5 Suitable

39、shaker B Back span 6 Suspension assembly C Fibre splice Figure 1 Typical test arrangement for aeolian vibration test blankBS EN 50289-3-13: 2003 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards

40、. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant

41、aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +4

42、4 (0)20 8996 9000. Fax: +44 (0)20 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed

43、to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: ordersbsi-. Standards are also available from the BSI website at http:/www.bsi-. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as

44、British Standards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which giv

45、e details on all its products and services. Contact the Information Centre. Tel: +44 (0)20 8996 7111. Fax: +44 (0)20 8996 7048. Email: infobsi-. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For detail

46、s of these and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002. Fax: +44 (0)20 8996 7001. Email: membershipbsi-. Information regarding online access to British Standards via British Standards Online can be found at http:/www.bsi- Further information about BSI is available

47、on the BSI website at http:/www.bsi-. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, st

48、ored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or g

49、rade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. Details and advice can be obtained from the Copyright & Licensing Manager. Tel: +44 (0)20 8996 7070. Fax: +44 (0)20 8996 7553. Email: copyrightbsi-.