1、 IEC 60794-4-10 Edition 2.0 2014-10 INTERNATIONAL STANDARD Optical fibre cables Part 4-10: Family specification Optical ground wires (OPGW) along electrical power lines IEC 60794-4-10:2014-10(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2014 IEC, Geneva, Switzerland All rights
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11、tical ground wires (OPGW) along electrical power lines INTERNATIONAL ELECTROTECHNICAL COMMISSION R ICS 33.180.10 PRICE CODE ISBN 978-2-8322-1909-6 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributo
12、r. colour inside 2 IEC 60794-4-10:2014 IEC 2014 CONTENTS FOREWORD . 4 1 Scope 6 2 Normative references 6 3 Terms and definitions 7 3.1 Cables 7 3.2 Other definitions . 7 4 Optical fibre . 8 4.1 General . 8 4.2 Attenuation . 9 Attenuation coefficient . 9 4.2.1Attenuation uniformity and attenuation di
13、scontinuities 9 4.2.2 4.3 Cut-off wavelength of cabled fibre . 9 4.4 Fibre colouring 9 4.5 Polarization mode dispersion (PMD) . 9 5 Cable element . 9 6 Cable construction . 10 7 Cable design characteristics 10 8 Cable tests 11 8.1 General . 11 8.2 Classification of tests 11 Type tests 11 8.2.1Factor
14、y acceptance tests . 12 8.2.2Routine tests . 12 8.2.3 8.3 Type tests . 12 General . 12 8.3.1Tensile performance 12 8.3.2Stress-strain test . 13 8.3.3Breaking strength test 13 8.3.4Sheave test . 13 8.3.5Aeolian vibration test . 14 8.3.6Creep 14 8.3.7Low frequency vibration test (Galloping test) . 15
15、8.3.8Temperature cycling 15 8.3.9Water penetration (applicable to optical unit(s) only) 16 8.3.10Short-circuit . 16 8.3.11Lightning test . 16 8.3.12 8.4 Factory acceptance tests 17 General . 17 8.4.1Typical tests 17 8.4.2 8.5 Routine tests. 17 General . 17 8.5.1Typical tests 18 8.5.2 9 Quality assur
16、ance 18 Annex A (informative) Packaging and marking . 19 Bibliography 20 IEC 60794-4-10:2014 IEC 2014 3 Table 1 Cable design characteristics 10 Table 2 Lightning test conditions and parameters to be informed in the test report . 17 4 IEC 60794-4-10:2014 IEC 2014 INTERNATIONAL ELECTROTECHNICAL COMMIS
17、SION _ OPTICAL FIBRE CABLES Part 4-10: Family specification Optical ground wires (OPGW) along electrical power lines FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Commi
18、ttees). 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 Availa
19、ble 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 org
20、anizations 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
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24、tself 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 services carried out by independent certification bodies. 6) All users should ensure tha
25、t 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 nat
26、ure 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 reference
27、d 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. Internatio
28、nal Standard IEC 60794-4-10 has been prepared by subcommittee 86A: Fibres and Cables, of IEC technical committee 86. Fibre optics This second edition cancels and replaces the first edition published in 2006 and constitutes a technical revision. This edition includes the following significant technic
29、al changes with respect to the previous edition: a) galloping test (9.7) has been added to the type tests list; b) update of definitions clause; maximum installation tension (MIT) defined and used in the sheave test description; c) definition of characterization of OPGWs mechanical behaviour in orde
30、r to provide information useful for electrical power transmission lines designers; IEC 60794-4-10:2014 IEC 2014 5 d) improved definition of lightning test parameters and conditions to improve reproducibility among different laboratories. The text of this standard is based on the following documents:
31、 CDV Report on voting 86A/1594/CDV 86A/1627/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 the ISO/IEC Directives, Part 2. A list of all parts in the IEC 6079
32、4 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 web site under “http:/webstore.iec.ch“ in the data related to the spe
33、cific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours
34、 which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. 6 IEC 60794-4-10:2014 IEC 2014 OPTICAL FIBRE CABLES Part 4-10: Family specification Optical ground wires (OPGW) along electrical power lines 1 Scope Th
35、is part of IEC 60794-4, which is a family specification, covers cable construction, test methods and optical, mechanical, environmental and electrical performance requirements for OPGW (optical ground wire) which is used for the protection of electrical power lines against atmospheric discharges or
36、short-circuits and, at the same time, as a high bandwidth transport media for communications-and-control optical signals. The corresponding environmental declaration may be built according to IEC TR 62839-1. The OPGW is a substitute for a conventional ground-/shield-wire containing optical fibres fo
37、r control and/or telecommunication purposes. Usually the fibres are embedded loosely in protective buffer tubes. To fulfil mechanical and electrical requirements; an armouring of one or more layers with aluminium, aluminium alloy, and aluminium clad steel, galvanized steel or a mixture of them is he
38、lically stranded. If the construction contains an aluminium tube or an aluminium slotted core, this cross section is considered as a conductive part. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its applica
39、tion. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60104, Aluminium-magnesium-silicon alloy wire for overhead line conductors IEC 60304, Standard colours for insulation for low-freq
40、uency cables and wires IEC 60793 (all parts), Optical fibres IEC 60793-1-40, Optical fibres Part 1-40: Measurement methods and test procedures Attenuation IEC 60793-1-44, Optical fibres Part 1-44: Measurement methods and test procedures Cut- off wavelength IEC 60793-1-48, Optical fibres Part 1-48: M
41、easurement methods and test procedures Polarizationn mode dispersion IEC 60793-2-50, Optical fibres Part 2-50: Product specifications Sectional specifications for class B single-mode fibres IEC 60794-1-1, Optical fibre cables Part 1-1: Generic specification General IEC 60794-4-10:2014 IEC 2014 7 IEC
42、 60794-1-21, Optical fibre cables Part 1-21: Generic specification Basic optical cable test procedures Mechanical test methods 1IEC 60794-1-22:2012, Optical fibre cables Part 1-22: Generic specification Basic optical cable test procedures Environmental test methods IEC 60794-1-24:2014, Optical fibre
43、 cables Part 1-24: Generic specification Basic optical cable test procedures Electrical testmethods IEC 60794-4:2003, Optical fibre cables Part 4: Sectional specification Aerial optical cables along electrical power lines IEC 60888, Zin-coated steel wires for stranded conductors IEC 60889, Hard-draw
44、n aluminium wire for overherad line conductors IEC 61089:1991, Round wire concentric lay overhead electrical stranded conductors IEC 61232, Aluminium-clad steel wires for electrical purposes IEC 61394, Overhead lines Characteristics of greases for aluminium, aluminium alloy and steel bare conductors
45、 IEC 61395, Overhead electrical conductors Creep test procedures for stranded conductors 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 Cables 3.1.1 optical ground wire OPGW metallic optical cable that has the dual performance functions of a
46、 conventional ground wire with telecommunication capabilities 3.2 Other definitions 3.2.1 rated tensile strength RTS summation of the product of nominal cross-sectional area, nominal tensile strength and stranding factor (minimum 0,9) for each load bearing material in the cable construction Note 1 t
47、o entry: See Annex A of IEC 60794-4:2003 for details of the recommended method to calculate rated tensile strength of OPGW. 3.2.2 creep test test designed to determine the long-term tensile creep characteristics of metallic aerial installed cables _ 1To be published. 8 IEC 60794-4-10:2014 IEC 2014 N
48、ote 1 to entry: The information derived from this test is used in the sag-tension calculations during the design layout of the OPGW in the electrical system. 3.2.3 fittings hardware used for stringing and clipping of OPGW to the structures at the end of the installation procedure Note 1 to entry: Su
49、spension, dead end, vibration damper and bonding clamps hardware are designed for a specific size and/or type of OPGW cable. 3.2.4 optical fibre unit cable element designed to house and to protect the optical fibres from damage due to mechanical, thermal and electrical influences and moisture penetration Note 1 to entry: Further details are given in Clause 6. 3.2.5 maximum allowable ovality MAOC unit or its component that does not exceed
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