1、 IEC 60794-3-50 Edition 1.0 2008-10 INTERNATIONAL STANDARD Optical fibre cables Part 3-50: Outdoor cables Family specification for gas pipe cables and subducts for installation by blowing and/or pulling/dragging in gas pipes IEC 60794-3-50:2008(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 20
2、08 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 Co
3、mmittee 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 C
4、H-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 Th
5、e 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 variet
6、y 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 It also gives information on projects, withdrawn and replaced publications.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
7、. 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 El
8、ectrotechnical 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 IEC 6
9、0794-3-50 Edition 1.0 2008-10 INTERNATIONAL STANDARD Optical fibre cables Part 3-50: Outdoor cables Family specification for gas pipe cables and subducts for installation by blowing and/or pulling/dragging in gas pipes INTERNATIONAL ELECTROTECHNICAL COMMISSION V ICS 33.180.10 PRICE CODE ISBN 2-8318-
10、1002-5 Registered trademark of the International Electrotechnical Commission 2 60794-3-50 IEC:2008(E) CONTENTS FOREWORD.4 1 Scope.6 2 Normative references .6 3 Symbols and abbreviations.7 4 Family specification for gas pipe cables and subducts for installation by blowing and/or pulling/dragging in g
11、as pipes (blank detail specification and minimum requirements) .8 4.1 Construction8 4.1.1 General .8 4.1.2 Subducts .8 4.1.3 Gas pipe cables.8 4.2 Optical fibres.9 4.2.1 Single-mode dispersion unshifted (B1.1) optical fibre 9 4.2.2 Single-mode dispersion shifted (B2) optical fibre .9 4.2.3 Single-mo
12、de non-zero dispersion (B4) optical fibre10 4.2.4 Single-mode (B6) optical fibre .10 4.2.5 Multimode fibres10 4.3 High pressure gas pipe cable constructions.11 4.3.1 Cable for installation within subducts (previously installed within the high pressure gas pipe) .11 4.3.2 Cable for direct installatio
13、n within the high pressure gas pipe12 4.3.3 Subduct construction .13 4.4 Installation and operating conditions .13 4.4.1 Tests applicable to cables/cable elements.13 4.4.2 Installation conditions13 4.5 Mechanical and environmental tests14 4.5.1 Subducts .14 4.5.2 Cable for installation within subduc
14、ts (previously installed into the gas pipe) .16 4.5.3 Cables for direct installation into the high pressure gas pipe .20 Annex A (informative) Blank detail specification.24 Annex B (informative) OF cables for high pressure gas pipes 27 Annex C (informative) Examples of subducts and high pressure gas
15、 pipe cables .28 Annex D (informative) Example for installation schemes of cables in high pressure gas pipes (fibre-in-gas)30 Figure C.1 Example of constructions of cables for installation in subducts within gas pipes 28 Figure C.2 Example of constructions of cables for direct installation into high
16、 pressure gas pipes .29 Figure D.1 Picture of an I/O-port 30 Figure D.2 Schematic drawing of Figure D.1: installation of OF cable within the gas pipe 30 Figure D.3 Schematic drawing of the installation of I/O-ports on high pressure PE gas pipes31 60794-3-50 IEC:2008(E) 3 Table 1 Single-mode dispersi
17、on unshifted (B1.1) optical fibre 9 Table 2 Single-mode dispersion shifted (B2) optical fibre.9 Table 3 Single-mode non-zero dispersion (B4) optical fibre10 Table 4 Single-mode (B6) optical fibre .10 Table 5 Characteristics Cable for installation within subducts .11 Table 6 Characteristics Cable for
18、 direct installation within the high pressure gas pipe 12 Table 7 Characteristics Subduct construction13 Table 8 Tests applicable to cables/cable elements.13 Table 9 Tests applicable to subducts .14 Table 10 Tests applicable for OF cables within subducts .16 Table 11 Tests applicable to direct insta
19、lled OF cables20 Table A.1 Cables for subduct installation into the gas pipe.24 Table A.2 Cables for direct installation into the gas pipe 25 Table A.3 Subduct description .26 Table B.1 OF cables for high pressure gas pipes .27 4 60794-3-50 IEC:2008(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPT
20、ICAL FIBRE CABLES Part 3-50: Outdoor cables Family specification for gas pipe cables and subducts for installation by blowing and/or pulling/dragging in gas pipes FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national e
21、lectrotechnical 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 Spec
22、ifications, 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. Interna
23、tional, 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 form
24、al 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 fo
25、r 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
26、) 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 shal
27、l 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 liabi
28、lity 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 (inclu
29、ding 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
30、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 60794-3-50 has been prepared by subcommittee 8
31、6A: Fibres and cables, of IEC technical committee 86: Fibre optics. This standard is to be used in conjunction with IEC 60794-1-1 and IEC 60794-1-2, and IEC 60794-3. The text of this standard is based on the following documents: FDIS Report on voting 86A/1231/FDIS 86A/1242/RVD Full information on th
32、e voting for the approval of this standard can be found in the report on voting indicated in the above table. 60794-3-50 IEC:2008(E) 5 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2 A list of all parts of IEC 60794 series, under the general title Optical fibre ca
33、bles, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication wi
34、ll be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. 6 60794-3-50 IEC:2008(E) OPTICAL FIBRE CABLES Part 3-50: Outdoor cables Family specification for gas pipe cables and subducts for installation by blowing an
35、d/or pulling/dragging in gas pipes 1 Scope This part of IEC 60794 is a family specification that covers gas pipe cables and subducts for installation by blowing and/or pulling/dragging in high pressure gas pipes (400 mbar to 4 bar). Systems built with components covered by this standard are subject
36、to the requirements of sectional specification IEC 60794-3. Gas pipe cable and subduct constructions have to meet the different requirements of the gas- companies and/or associations regarding chemical, environmental, operational interactions and in general maintenance conditions. I/O-ports for the
37、inlet and outlet of the gas pipe cables and/or subducts are housing the sealing system assuring the absolute gas tightness preventing any gas leakage due to the installation of the gas pipe cables into the gas pipes. A table of preferential applications, describing gas pipe cable characteristics ver
38、sus methods of installation is reported in Annex A for high pressure gas pipe cables. Clause 4 describes a blank detail specification for gas pipe cables and subducts for installation by blowing and/or pulling/dragging in high pressure gas pipes. It incorporates some minimum requirements. Detail spe
39、cifications may be prepared on the basis of this family specification. The parameters specified in this standard may be affected by measurement uncertainty arising either from measurement errors or calibration errors due to lack of suitable standards. Acceptance criteria should be interpreted with r
40、espect to this consideration. The number of fibres tested is representative of the gas pipe cable and should be agreed between the customer and the supplier. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only t
41、he edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60304, 1982: Standard colours for insulation for low-frequency cables and wires IEC 60793-1-20, Optical fibres Part 1-20: Measurement methods and test procedures Fi
42、bre geometry IEC 60793-1-40, Optical fibres Part 1-40: Measurement methods and test procedures Attenuation 60794-3-50 IEC:2008(E) 7 IEC 60793-1-44, Optical fibres Part 1-44: Measurement methods and test procedures Cut- off wavelength IEC 60793-2, Optical fibres Part 2: Product specifications General
43、 IEC 60793-2-50, Optical fibres Part 2-50: Product specifications Sectional specification for class B single-mode fibres IEC 60794-1-1, Optical fibre cables Part 1-1: Generic specification General IEC 60794-1-2, Optical fibre cables Part 1-2: Generic specification Basic optical cable test procedures
44、 IEC 60794-3, Optical fibre cables Part 3: Sectional specification Outdoor cables IEC 60794-3-10, Optical fibre cables Part 3-10: Outdoor cables Family specification for duct and directly buried optical telecommunication cables IEC 60811-1-1, 1993: Common test methods for insulating and sheathing ma
45、terials of electric cables and optical cables Part 1-1: Methods for general application Measurement of thickness and overall dimensions Tests for determining the mechanical properties IEC 60811-5-1,1990 Insulating and sheathing materials of electric and optical cables Common test methods Part 5-1: M
46、ethods specific to filling compounds Drop-point Separation of oil Lower temperature brittleness Total acid number Absence of corrosive components Permittivity at 23 C DC resistivity at 23 C and 100 C 3 Symbols and abbreviations For the purposes of this document, the following symbols and abbreviatio
47、ns apply. CCcabled fibre cut-off wavelength d nominal outer diameter of the gas pipe optical fibre cable d cnominal outer diameter of the subduct DS detail specification T Othreshold tensile load below which no attenuation and/or fibre strain increase should occur in the tensile performance test T M
48、the acceptable amount of short-term tensile load that can be applied to the cable without permanent degradation of the characteristics of the fibres in the tensile performance test T A1temperature cycling test low-temperature limit according to IEC 60794-1-2, method F1 T A2temperature cycling test l
49、ow-temperature limit according to IEC 60794-1-2, method F1 T B1temperature cycling test high-temperature limit according to IEC 60794-1-2, method F1 T B2temperature cycling test high-temperature limit according to IEC 60794-1-2, method F1 t 1temperature cycling dwell time n x d a value times cable outer diameter used for bends, mandrels, etc. PE polyethylene I/O-port input/ output port for gu
