09-30197559-DC.pdf
a Date: 14 January 2009 Origin: International Latest date for receipt of comments: 15 March 2009 Project no.: 2009/00606 Responsible committee: GEL/86/1 Optical fibres and cables Interested committees: Title: Draft BS EN 60794-3-11 Ed.2 : Optical fibre cables - Part 3-11 : Outdoor cables Product specification for duct and directly buried single-mode optical fibre telecommunication cables Supersession information: If this document is published as a standard, the UK implementation of it will supersede NONE and partially supersede. NONE If you are aware of a current national standard which may be affected, please notify the secretary (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 15 March 2009. This draft is issued to allow comments from interested parties; all comments will be given consideration prior to publication. No acknowledgement will normally be sent. 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Direct tel: 020 8996 7009 Responsible Committee Secretary: Committee Service Centre (BSI) E-mail: cscbsigroup.com Draft for Public Comment Head Office 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Version 8.0 DPC: 09/30197559 DC Licensed Copy: London South Bank University, South Bank University, 02/02/2009 04:04, Uncontrolled Copy, (c) BSI b Introduction This draft standard is based on international discussions in which the UK has taken an active part. Your comments on this draft are welcome and will assist in the preparation of the consequent standard. There is a high probability that this text could be adopted by CENELEC as a reference document for harmonization or as a European Standard. Recipients of this draft are requested to comment on the text bearing in mind this possibility. UK Vote Please indicate whether you consider the UK should submit a negative (with reasons) or positive vote on this draft. 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Licensed Copy: London South Bank University, South Bank University, 02/02/2009 04:04, Uncontrolled Copy, (c) BSI 86A/1259/CD COMMITTEE DRAFT (CD) IEC/TC or SC: SC86A Project number IEC 60794-3-11 Ed. 2.0 Title of TC/SC: Fibres and Cables Date of circulation 2009-01-09 Closing date for comments 2009-04-10 Also of interest to the following committees Supersedes document 86A/1258/MCR Proposed horizontal standard Other TC/SCs are requested to indicate their interest, if any, in this CD to the TC/SC secretary Functions concerned: Safety EMC Environment Quality assurance Secretary: Guy Perrot - France Email: Guy.Perrotnexans.com THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE. IT SHOULD NOT BE USED FOR REFERENCE PURPOSES. RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION. Title: IEC 60794-3-11 Ed. 2.0: Optical fibre cables - Part 3-11 Outdoor cables Product specification for duct and directly buried single-mode optical fibre telecommunication cables (Titre) : Introductory note Copyright © 2009 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions. You may not copy or “mirror“ the file or printed version of the document, or any part of it, for any other purpose without permission in writing from IEC. Licensed Copy: London South Bank University, South Bank University, 02/02/2009 04:04, Uncontrolled Copy, (c) BSI 86A/1259/CD 2 Contents Clause Page 1 Scope 6 2 Normative references6 3 Symbols.7 4 Terminology .7 5 General information 7 5.1 General cable description.7 5.1.1 Characteristics of optical fibre.7 5.1.2 Characteristics of optical fibre cable elements .8 5.1.3 Characteristics of optical fibre cables 8 5.1.4 Environmental and product safety requirements.8 5.2 Optical fibre splice-ability .8 5.3 Testing9 5.3.1 No change in attenuation 9 5.3.2 No change in fibre strain (B, C, A1) .9 6 Requirements for cabled single-mode optical fibres10 6.1 Fibre materials 10 6.2 Optical requirements10 6.2.1 Attenuation coefficient 10 6.2.2 Attenuation Discontinuities11 6.2.3 Cable Cut-off wavelength11 6.2.4 Polarization mode dispersion (PMD)11 6.2.5 Group index .11 7 Requirements for cable elements 12 7.1 Element design12 7.1.1 Modularity12 7.1.2 Fibre and element identification.12 7.2 Element characteristics13 7.2.1 Ribbon.13 7.2.2 Tube kinking 13 8 Requirements for optical cables 13 8.1 Cable construction.13 8.1.1 Cable core .14 8.1.2 Anti-buckling and strength element splicing .14 8.1.3 Cable element stranding .14 8.1.4 Spliced fibres .14 8.1.5 Spare fibres .14 8.1.6 Cable sheath removal.14 8.1.7 Armouring 14 8.2 Sheath marking .15 8.2.1 Sheath marking 15 8.2.2 Identification marking .15 8.2.3 Cable length marking15 8.3 Cable Core Materials .16 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 04:04, Uncontrolled Copy, (c) BSI 86A/1259/CD 3 8.3.1 Tube filling compound material (if required) .16 8.3.2 Water-blocking material 16 8.3.3 Cable material compatibility 16 8.3.4 Tube material.16 8.4 Cable sheath .16 8.4.1 Sheath material16 8.4.2 Sheath thickness16 8.4.3 Outer cable diameter 17 8.4.4 Moisture barrier17 8.4.5 Rodent resistant barrier 17 8.5 Mechanical requirements .17 8.5.1 Cable bend 17 8.5.2 Impact .17 8.5.3 Crush.18 8.5.4 Tensile performance.19 8.5.5 Torsion 19 8.5.6 Repeated bending 20 8.6 Environmental requirements.20 8.6.1 Temperature cycling .20 8.6.2 Stripping force stability of cabled optical fibres.22 8.6.3 Water penetration.22 8.6.4 Environmental impact .22 8.7 Electrical protection .22 8.7.1 Continuity of metallic members .22 9 Quality Assurance 22 Annex A (informative) .23 A.1 Guidance for ITU-T and IEC cabled fibre and fibre references23 Annex B (informative) .24 B.1 Fibre Materials 24 B.2 List of Fibre attributes 24 Annex C.26 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 04:04, Uncontrolled Copy, (c) BSI 86A/1259/CD 4 INTERNATIONAL ELECTROTECHNICAL COMMISSION OPTICAL FIBRE CABLES Part 3-11 Ed. 2.0: Outdoor cables Product specification for duct and directly buried single-mode optical fibre telecommunication cables FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60794-3-11 has been prepared by Subcommittee 86A: Fibres and cables, of IEC Technical Committee 86: Fibre optics. The text of this standard is based on the following documents: FDIS Report on voting 86A/xxx/FDIS 86A/xxx/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with ISO/IEC Directives, Part 2. Licensed Copy: London South Bank University, South Bank University, 02/02/2009 04:04, Uncontrolled Copy, (c) BSI 86A/1259/CD 5 IEC 60794 consists of the following parts under the general title: Optical fibre cables. - Part 1-1: Generic specification: General - Part 1-2: Generic specification: Basic optical cable test procedures - Part 2: Sectional specification: Indoor cables - Part 3: Sectional specification: Outdoor cables - Part 4: Sectional specification: Aerial optical cables along electrical lines - Part 5: Sectional specification: Microduct cabling for installation by blowing The committee has decided that the contents of this publication will remain unchanged until the maintenance result date1) indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 1) The National Committees are requested to note that for this publication the maintenance result date is Licensed Copy: London South Bank University, South Bank University, 02/02/2009 04:04, Uncontrolled Copy, (c) BSI 86A/1259/CD 6 OPTICAL FIBRE CABLES Part 3-11 Ed. 2.0: Outdoor cables Product specification for duct and directly buried single-mode optical fibre telecommunication cables 1 Scope This part of IEC 60794 sets forth technical requirements and characteristics of single-mode optical fibre cables for duct and direct buried installation. This specification includes functional mechanical, environmental and optical requirements, recommended features and test methods for assessing the product against the stated requirements. The specified test methods, where applicable, are those referenced in IEC 60794-1-1 “Optical fibre cables Part 1-1: Generic specification General“ and described in detail in IEC 60794- 1-2 “Optical fibre cables Part 1-2: Generic specification Basic optical cable test procedures“. The requirements of this specification shall be used in conjunction with IEC 60794-3 “Optical fibre cables - Part 3: Sectional specification Outdoor cables“ and IEC 60794-3-10 “Optical fibre cables Part 3-10: Outdoor cables Duct and directly buried optical telecommunication cables Family specification“. Multimode fibre requirements are not addressed in this document; see IEC 60794-3-12. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated
