1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-19570-0 SANS 60794-5:2007Edition 1IEC 60794-5:2006Edition 1SOUTH AFRICAN NATIONAL STANDARD Optical fibre cables Part 5: Sectional specific
4、ation Microduct cabling for installation by blowing This national standard is the identical implementation of IEC 60794-5:2006 and is adopted with the permission of the International Electrotechnical Commission. WARNING Can only be used in conjunction with SANS 60794-1-1 and SANS 60794-1-2. Publishe
5、d by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 60794-5:2007 Edition 1 IEC 60794-5:2006 Edition 1 Table of changes Change No. Date Scope National forewo
6、rd This South African standard was approved by National Committee StanSA SC 74A, Communication technology Fibre optics, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in August 2007. NORME INTERNATIONALEC
7、EIIECINTERNATIONAL STANDARD 60794-5Premire ditionFirst edition2006-08Cbles fibres optiques Partie 5: Spcification intermdiaire Cblage en micro-conduits pour installation par soufflage Optical fibre cables Part 5:Sectional specification Microduct cabling for installation by blowing Pour prix, voir ca
8、talogue en vigueur For price, see current catalogue IEC 2006 Droits de reproduction rservs Copyright - all rights reserved Aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque forme que ce soit et par aucun procd, lectronique ou mcanique, y compris la photocopie et les m
9、icrofilms, sans laccord crit de lditeur. 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 the publisher. International Electrotechnical Commission, 3, rue de Varem
10、b, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch CODE PRIX PRICE CODE L Commission Electrotechnique InternationaleInternational Electrotechnical Commission SANS 60794-5:2007This s tandard may only be used and prin
11、ted by approved subscription and freemailing clients of the SABS .60794-5 IEC:2006 3 CONTENTS FOREWORD.5 1 Scope.9 2 Normative references .9 3 Symbols .11 4 Construction.11 4.1 General .11 4.2 Optical fibres.11 4.3 Microduct 13 4.4 Protected microduct 13 4.5 Microduct optical fibre cables 13 4.6 Mic
12、roduct fibre units cables.15 4.7 Marking .15 4.8 Installation and operating conditions .15 4.9 Testing17 4.10 Quality Assurance .19 Annex A (informative) Microduct fittings.21 SANS 60794-5:2007This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .6
13、0794-5 IEC:2006 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL FIBRE CABLES Part 5: Sectional specification Microduct cabling for installation by blowing FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national ele
14、ctrotechnical 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 Specif
15、ications, 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. Internati
16、onal, 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
17、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 i
18、nternational 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) I
19、n 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 b
20、e 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 liabilit
21、y 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 (includin
22、g 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 thi
23、s 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 60794-5 has been prepared by subcommittee 86A Fib
24、res 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. The text of this standard is based on the following documents: FDIS Report on voting 86A/1074/FDIS 86A/1109/RVD Full information on the voting for the approv
25、al 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. SANS 60794-5:2007This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .60794
26、-5 IEC:2006 7 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 will be reconfirmed, withdr
27、awn, replaced by a revised edition, or amended. SANS 60794-5:2007This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .60794-5 IEC:2006 9 OPTICAL FIBRE CABLES Part 5: Sectional specification Microduct cabling for installation by blowing 1 Scope Thi
28、s part of IEC 60794 specifies the requirements of microduct optical fibre cables, microduct fibre units, microducts and protected microducts for installation by blowing for outdoor and/or indoor use. The microduct optical fibre cables and microduct fibre units utilise the structure of the microduct
29、or protected microducts to support installation and to provide protection over the design lifetime. These products may be used for applications such as communication and transmission networks, transmission, telephone and data processing equipment, control and monitoring applications. The cabling str
30、uctures described in this sectional specification are uniquely designed to facilitate and take advantage of installation by blowing into microducts. They are not necessarily covered by sectional specifications IEC 60794-2, IEC 60794-3 or IEC 60794-4. 2 Normative references The following referenced d
31、ocuments are indispensable for the application of this document. 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 wir
32、es IEC 60793-1-20, Optical fibres Part 1-20: Measurement methods and test procedures Fibre geometry IEC 60793-1-40, Optical fibres Part 1-40: Measurement methods and test procedures Attenuation IEC 60793-2-10, Optical fibres Part 2-10: Product specifications Sectional specification for category A1 m
33、ultimode fibres IEC 60793-2-50, Optical fibres Part 2-50: Product specifications Sectional specification for category 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 cab
34、le test procedures IEC 60794-3, Optical fibre cables Part 3: Sectional specification Outdoor cables SANS 60794-5:2007This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .60794-5 IEC:2006 11 3 Symbols For the purposes of this part of IEC 60794 the
35、following symbols apply. CCCabled fibre cut-off wavelength d Nominal outer diameter of the microduct optical fibre cable or microduct fibre unit 4 Construction 4.1 General The microduct optical fibre cables, microduct fibre units, microducts and protected microducts shall be designed and manufacture
36、d for an expected operating lifetime of at least 20 years. It shall be possible to install or remove the microduct optical fibre cable or microduct fibre unit in or from the microducts by blowing during the operational lifetime. When considering recovering a product for potential re-use, care must b
37、e taken to minimize stress on the product and that the product is carefully handled and packaged in accordance with the manufacturers guidelines. Good practice would also indicate that all product is appropriately tested if re-deployed. The materials in the microduct optical fibre cable, microduct f
38、ibre unit, microduct or protected microduct shall not present a health hazard within its intended use. 4.2 Optical fibres 4.2.1 Single-mode optical fibre The optical fibre shall conform to the requirements of IEC 60793-2-50. 4.2.1.1 Attenuation 4.2.1.1.1 Attenuation coefficient The typical maximum a
39、ttenuation coefficient of a microduct optical fibre cable or microduct fibre unit is dependent upon the fibre type(s) used. Typical values are shown in 5.1 of IEC 60794-1-1. Particular values may be agreed between the customer and supplier. 4.2.1.1.2 Attenuation discontinuities The local attenuation
40、 shall not have point discontinuities in excess of 0,10 dB. 4.2.1.2 Cut-off wavelength The cabled fibre cut-off wavelength CC shall be less than the operational wavelength. 4.2.1.3 Polarisation Mode Dispersion (PMD) If required, refer to 5.5 of IEC 60794-3 . SANS 60794-5:2007This s tandard may only
41、be used and printed by approved subscription and freemailing clients of the SABS .60794-5 IEC:2006 13 4.2.2 Multimode fibre The optical fibre shall conform to the requirements of IEC 60793-2-10. 4.2.2.1 Attenuation The typical maximum attenuation coefficient of a microduct optical fibre cable or mic
42、roduct fibre unit is dependent upon the fibre type(s) used. Typical values are shown in 5.1 of IEC 60794-1-1. Particular values may be agreed between the customer and supplier. 4.2.2.2 Fibre colouring If the primary coated fibres are coloured for identification, the coloured coating shall be readily
43、 identifiable throughout the lifetime of the microduct optical fibre cable or microduct fibre unit and shall be a reasonable match to IEC 60304. 4.3 Microduct A microduct is a small, flexible lightweight tube with an outer diameter typically less than 16 mm. The microducts shall be able to resist pr
44、essure differences needed for installation by blowing. They shall be circular and uniform in cross-section throughout their length and the inner surface shall have a low coefficient of friction. Inner- and outer-diameter shall be specified. Microducts are normally intended for benign installations s
45、uch as indoors or as components of a protected microduct as described in 4.4. In all cases it shall be possible to identify each individual microduct throughout the length. When using colours they shall be a reasonable match to IEC 60304. See Annex A for information on microduct connection hardware.
46、 4.4 Protected microduct A protected microduct is one or more microducts, surrounded by a protective sheath and/or protected by a duct. In all cases it shall be possible to identify each individual microduct throughout the length of the protected microduct. When using colours they shall be a reasona
47、ble match to IEC 60304. 4.5 Microduct optical fibre cables This is an optical fibre cable that is suitable for installation by blowing into a microduct. The attenuation of the cable at the operational wavelength(s) shall not exceed values agreed between the customer and supplier. There shall be no f
48、ibre splice in a delivery length unless otherwise agreed by the customer and supplier. It shall be possible to identify each individual fibre throughout the length of the microduct optical fibre cable. SANS 60794-5:2007This s tandard may only be used and printed by approved subscription and freemail
49、ing clients of the SABS .60794-5 IEC:2006 15 4.6 Microduct fibre units cables This is a fibre unit that is suitable for installation by blowing into a microduct. They differ from microduct optical fibre cables in that they provide less protection to the fibres that they contain. The attenuation of the microduct fibre unit at the operational wavelength(s) shall not exceed values agreed between the customer and supplie
