IEC_60794-3-20-2009.pdf

IEC 60794-3-20Edition 2.0 2009-01INTERNATIONAL STANDARD Optical fibre cables Part 3-20:Outdoor cables Family specification for self-supporting aerial telecommunication cables IEC 60794-3-20:2009(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2009 IEC,Geneva,Switzerland All rights reserved.Unless otherwise specified,no part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical,including photocopying and microfilm,without permission in writing from either IEC or IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,please contact the address below or your local IEC member National Committee for further information.IEC Central Office 3,rue de Varemb CH-1211 Geneva 20 Switzerland Email:inmailiec.ch Web:www.iec.ch About the IEC The International Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standards for all electrical,electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sure that you have the latest edition,a corrigenda or an amendment might have been published.?Catalogue of IEC publications:www.iec.ch/searchpub The IEC on-line Catalogue enables you to search by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,withdrawn and replaced publications.?IEC Just Published:www.iec.ch/online_news/justpub Stay up to date on all new IEC publications.Just Published details twice a month all new publications released.Available on-line and also by email.?Electropedia:www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions in English and French,with equivalent terms in additional languages.Also known as the International Electrotechnical Vocabulary online.?Customer Service Centre:www.iec.ch/webstore/custserv If you wish to give us your feedback on this publication or need further assistance,please visit the Customer Service Centre FAQ or contact us:Email:csciec.ch Tel.:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 60794-3-20Edition 2.0 2009-01INTERNATIONAL STANDARD Optical fibre cables Part 3-20:Outdoor cables Family specification for self-supporting aerial telecommunication cables INTERNATIONAL ELECTROTECHNICAL COMMISSION SICS 33.180.10 PRICE CODEISBN 2-8318-1022-5 Registered trademark of the International Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60794-3-20 IEC:2009(E)CONTENTS FOREWORD.4H3 1 Scope.5H5 2 Normative references.6H5 3 Symbols.7H6 4 Optical fibre,cable construction and tests applicable for aerial telecommunication cables to be used in self-supporting aerial applications.8H7 4.1 Optical fibres.9H7 4.1.1 Common single-mode fibre requirements.10H7 4.1.2 Single-mode dispersion unshifted(B1.1)optical fibre.11H7 4.1.3 Single-mode dispersion unshifted(B1.2)optical fibre.12H8 4.1.4 Single-mode dispersion unshifted(B1.3)optical fibre.13H8 4.1.5 Single-mode dispersion shifted(B2)optical fibre.14H8 4.1.6 Single-mode non-zero dispersion(B4)optical fibre.15H8 4.1.7 Single-mode non-zero dispersion shifted(B5)optical fibre.16H9 4.1.8 Single-mode(B6.a)optical fibre.17H9 4.2 Cable element.18H9 4.3 Installation and operating conditions.19H10 4.3.1 Tests applicable.20H10 4.3.2 Installation conditions.21H10 4.4 Mechanical and environmental tests.22H10 4.4.1 Tests applicable.23H10 4.4.2 Details on family requirements and test conditions for optical fibre cable tests.24H11 Annex A(normative)Family specification for self-supporting aerial telecommunication cables.25H17 Table 1 Common single-mode fibre requirements.26H7 Table 2 Single-mode dispersion unshifted(B1.1)optical fibre.27H7 Table 3 Single-mode dispersion unshifted(B1.2)optical fibre.28H8 Table 4 Single-mode dispersion unshifted(B1.3)optical fibre.29H8 Table 5 Single-mode dispersion shifted(B2)optical fibre.30H8 Table 6 Single-mode non-zero dispersion(B4)optical fibre.31H8 Table 7 Single-mode non-zero dispersion shifted(B5)optical fibre.32H9 Table 8 Single-mode(B6.a)optical fibre.33H9 Table 9 Cable element.34H9 Table 10 Tests applicable.35H10 Table 11 Mechanical and environmental applicable tests.36H10 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.60794-3-20 IEC:2009(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL FIBRE CABLES Part 3-20:Outdoor cables Family specification for self-supporting aerial telecommu