1、 IEC 60794-3 Edition 4.0 2014-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Optical fibre cables Part 3: Outdoor cables Sectional specification Cbles fibres optiques Partie 3: Cbles extrieurs Spcification intermdiaire IEC 60794-3:2014-09(en-fr) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED
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19、es sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 60794-3 Edition 4.0 2014-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Optical fibre cables Part 3: Outdoor cables Sectional specification Cbles fibres optiques Partie 3: Cbles extrieurs Spcification intermdiaire
20、INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE Q ICS 33.180.10 PRICE CODE CODE PRIX ISBN 978-2-8322-1854-9 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that
21、 you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. colour inside 2 IEC 60794-3:2014 IEC 2014 CONTENTS FOREWORD . 4 1 Scope 6 2 Normative references 6 3 Terms, definitions, symbols and abbrevi
22、ations . 7 4 Optical fibre . 7 4.1 General . 7 4.2 Attenuation . 8 Attenuation coefficient . 8 4.2.1Attenuation uniformity Attenuation discontinuities 8 4.2.2 4.3 Cut-off wavelength 8 4.4 Fibre colouring 8 4.5 Polarization mode dispersion (PMD) . 8 5 Cable element . 8 5.1 General . 8 5.2 Tight secon
23、dary coating or buffer 9 5.3 Ruggedized fibre . 9 5.4 Slotted core 9 5.5 Polymeric tube 9 5.6 Ribbon 9 General . 9 5.6.1Dimensions 10 5.6.2Mechanical requirements . 10 5.6.3 5.7 Metallic tube . 11 Metallic tube on the optical core 11 5.7.1Fibres directly located in a metallic tube 11 5.7.2 6 Optical
24、 fibre cable construction 11 6.1 General . 11 6.2 Lay-up of the cable elements 12 6.3 Cable core filling . 12 6.4 Strength member 12 6.5 Moisture barrier 12 6.6 Cable sheath and armouring . 13 Inner sheath 13 6.6.1Armouring 13 6.6.2Outer sheath 13 6.6.3 6.7 Sheath marking . 14 6.8 Hydrogen gas . 14
25、7 Installation and operating conditions 14 8 Characterization of cable elements 14 9 Optical fibre cable tests . 15 10 Quality assurance 16 Bibliography 17 IEC 60794-3:2014 IEC 2014 3 Table 1 Maximum dimensions of optical fibre ribbons. 10 Table 2 Characteristics of different types of cable elements
26、 . 15 Table 3 Mechanical and environmental applicable tests . 16 4 IEC 60794-3:2014 IEC 2014 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL FIBRE CABLES Part 3: Outdoor cables Sectional specification FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for
27、 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 publish
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29、ticipate 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
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32、r 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 correspon
33、ding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
34、services carried out by independent certification bodies. 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
35、 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) Attent
36、ion 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
37、 shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60794-3 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical committee 86: Fibre optics. This fourth edition cancels and replaces the third edition, published in 2001, and c
38、onstitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: the specification has been streamlined by cross-referencing with IEC 60794-1-1; soft strippable tubes introduced into the “polymeric” tube heading and metal tubes
39、have been added; ribbon clauses have been simplified; more precise outer sheath details have been added; cable element tests and cable tests have been simplified by the use of tables instead of text; Annex A on PMD has been removed, to avoid duplication with IEC TR 61282-3. IEC 60794-3:2014 IEC 2014
40、 5 The text of this standard is based on the following documents: CDV Report on voting 86A/1589/CDV 86A/1621/RVC 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 th
41、e ISO/IEC Directives, Part 2. A list of all parts in the IEC 60794 series, published under the general title Optical fibre cables, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC webs
42、ite 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. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which
43、are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. 6 IEC 60794-3:2014 IEC 2014 OPTICAL FIBRE CABLES Part 3: Outdoor cables Sectional specification 1 Scope This part of IEC 60794 specifies the requirements for
44、optical fibre cables and cable elements which are intended to be used externally in communications networks. Other types of applications requiring similar types of cables can be considered. Requirements for cables to be used in ducts, for directly buried applications, aerial cables and cables for la
45、ke and river crossings are included in this standard. Also included are cables for specialized use in sewers and in water and gas pipes. For aerial application, this standard does not cover all functional aspects of cables installed in the vicinity of overhead power lines. For such applications, add
46、itional requirements and test methods may be necessary. Moreover, this standard excludes optical ground wires and cables attached to the phase or earth conductors of overhead power lines. For cables for lake and river crossings, this standard does not cover methods of cable repair, nor repair capabi
47、lity, nor does it cover cables for use with underwater line amplifiers. NOTE IEC TR 62839-1 1gives rules to built an environmental declaration if needed. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its app
48、lication. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60304, Standard colours for insulation for low-frequency cables and wires IEC 60708, Low-frequency cables with polyolefin insu
49、lation and moisture barrier polyolefin sheath IEC 60793-1-21, Optical fibres Part 1-21: Measurement methods and test procedures Coating geometry 1IEC 60793-1-32, Optical fibres Part 1-32: Measurement methods and test procedures Coating strippability IEC 60793-1-40, Optical fibres Part 1-40: Measurement methods and test procedures Attenuation IEC 60793-1-44, Optical fibres Part 1-44
