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 978-0-626-22556-8 SANS 61156-3:2009Edition 3 IEC 61156-3:2008Edition 3SOUTH AFRICAN NATIONAL STANDARD Multicore and symmetrical pair/quad cables for
4、 digital communications Part 3: Work area cable - Sectional specification This national standard is the identical implementation of IEC 61156-3:2008, and is adopted with the permission of the International Electrotechnical Commission. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof
5、 Private Bag X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 61156-3:2009 Edition 3 IEC 61156-3:2008 Edition 3 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee SABS TC 74, Communication techno
6、logy, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in April 2009. This SANS document supersedes SANS 61156-3:2007 (edition 2). IEC 61156-3Edition 3.0 2008-11INTERNATIONAL STANDARD Multicore and sym
7、metrical pair/quad cables for digital communications Part 3: Work area cable Sectional specification INTERNATIONAL ELECTROTECHNICAL COMMISSION NICS 33.120.20 PRICE CODEISBN 2-8318-1013-5 Registered trademark of the International Electrotechnical Commission SANS 61156-3:2009This s tandard may only be
8、 used and printed by approved subscription and freemailing clients of the SABS . 2 61156-3 IEC:2008(E) CONTENTS FOREWORD.4 1 General 6 1.1 Scope6 1.2 Normative references 6 1.3 Installation considerations6 2 Definitions, materials and cable construction.6 2.1 Definitions .6 2.2 Materials and cable c
9、onstruction7 2.2.1 General remarks7 2.2.2 Cable construction .7 2.2.3 Conductor7 2.2.4 Insulation.7 2.2.5 Colour code of insulation7 2.2.6 Cable element .7 2.2.7 Screening of the cable element 7 2.2.8 Cable make-up 8 2.2.9 Screening of the cable core8 2.2.10 Sheath.8 2.2.11 Colour of sheath 8 2.2.12
10、 Identification 8 2.2.13 Finished cable .8 3 Characteristics and requirements8 3.1 General remarks8 3.2 Electrical characteristics 9 3.2.1 Conductor resistance .9 3.2.2 Resistance unbalance9 3.2.3 Dielectric strength9 3.2.4 Insulation resistance 9 3.2.5 Mutual capacitance 9 3.2.6 Capacitance unbalan
11、ce9 3.2.7 Transfer impedance.9 3.3 Transmission characteristics9 3.3.1 Velocity of propagation (phase velocity) .9 3.3.2 Attenuation 10 3.3.3 Unbalance attenuation .10 3.3.4 Near-end crosstalk (NEXT) 10 3.3.5 Characteristic impedance.11 3.3.6 Structural Return Loss (SRL) .11 3.4 Mechanical and dimen
12、sional characteristics and requirements .12 3.4.1 Dimensional requirements12 3.4.2 Elongation at break of the conductors 12 3.4.3 Elongation at break of the insulation.12 3.4.4 Elongation at break of the sheath.12 3.4.5 Tensile strength of the sheath 12 3.4.6 Crush test of the cable.12 3.4.7 Impact
13、test of the cable12 3.4.8 Repeated bending of the cable.12 SANS 61156-3:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .61156-3 IEC:2008(E) 3 3.4.9 Tensile performance of the cable .13 3.5 Environmental characteristics 13 3.5.1 Shrinkage
14、of insulation.13 3.5.2 Wrapping test of insulation after thermal ageing.13 3.5.3 Bending test of insulation at low temperature .13 3.5.4 Elongation at break of the sheath after ageing13 3.5.5 Tensile strength of the sheath after ageing.13 3.5.6 Sheath pressure test at high temperature.13 3.5.7 Cold
15、bend test of the cable 13 3.5.8 Heat shock test13 3.5.9 Flame propagation characteristics of a single cable13 3.5.10 Flame propagation characteristics of bunched cables.13 3.5.11 Acid gas evolution13 3.5.12 Smoke generation14 3.5.13 Toxic gas emission 14 3.5.14 Combined flame and smoke test for cabl
16、es in environmental air handling space 14 4 Introduction to the blank detail specification 14 Table 1 Constants 10 Table 2 NEXT, PSNEXT constants .11 Table 3 Input impedance values .11 Table 4 Function fitted impedance 11 Table 5 Structural return loss (dB min) .12 SANS 61156-3:2009This s tandard ma
17、y only be used and printed by approved subscription and freemailing clients of the SABS . 4 61156-3 IEC:2008(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MULTICORE AND SYMMETRICAL PAIR/QUAD CABLES FOR DIGITAL COMMUNICATIONS Part 3: Work area cable Sectional specification FOREWORD 1) The Internatio
18、nal 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
19、 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; an
20、y 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 Standard
21、ization (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 repre
22、sentation 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
23、 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 public
24、ations. 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
25、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 inj
26、ury, 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
27、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 identi
28、fying any or all such patent rights. International Standard IEC 61156-6 has been prepared by subcommittee 46C: Wires and symmetric cables, of IEC technical committee 46: Cables, wires, waveguides, R.F. connectors, R.F. and microwave passive components and accessories. This third edition cancels and
29、replaces the second edition published in 2003. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) new requirements for new cables Cat3, and Cat5 applications; b) a better numbering in order to take
30、 into account the generic specification. SANS 61156-3:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .61156-3 IEC:2008(E) 5 The text of this standard is based on the first edition and on the following documents: FDIS Report on voting 46C/
31、864/FDIS 46C/869/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 the ISO/IEC Directives, Part 2. This standard shall be read in conjunction with IEC 61156-1:20
32、02. The list of all the parts of the IEC 61156 series, under the general title Multicore and symmetrical pair/quad cables for digital communications, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the maintenance result da
33、te 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. A bilingual version of this publication may be issued at a later date. SANS 61156-3
34、:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 6 61156-3 IEC:2008(E) MULTICORE AND SYMMETRICAL PAIR/QUAD CABLES FOR DIGITAL COMMUNICATIONS Part 3: Work area cable Sectional specification 1 General 1.1 Scope This sectional specification
35、 relates to IEC 61156-1:2002. The cables are specifically intended for work area wiring as defined in ISO/IEC 11801. This specification defines individually screened, common overall core screen and unscreened pairs or quads in cables for work area wiring. These cables are suitable for the various co
36、mmunication systems for which the reference is given in the relevant detail specification. The cables covered by this sectional specification are intended to operate with voltages and currents normally adopted for communication systems. These cables should not be connected to low impedance sources,
37、for example, the public mains electricity supply. The recommended temperature range during installation is 0 oC to +50 oC. The actual temperature range during installation shall be indicated in the relevant detail specification. The normal operating temperature range shall be 40 oC to +60 oC. 1.2 No
38、rmative references The following referenced documents 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 61156-1:20021, Multicore a
39、nd symmetrical pair/quad cables for digital communications Part 1: Generic specification IEC 60304, Standard colours for insulation for low-frequecny cables and wires IEC 60344, Calculation of d.c. resistance of plain and coated copper conductors of low-frequency cables and wires - Application guide
40、 ISO/IEC 11801, Information technology Generic cabling for customer premises 1.3 Installation considerations See 1.3 of IEC 61156-1:2002 and ISO/IEC 11801. 2 Definitions, materials and cable construction 2.1 Definitions See 2.1 of IEC 61156-1:2002. _ 1A more recent version of this standard exists (2
41、007), but as not all of the tests cited herein are addressed by the newer edition, it has been decided that the 2002 edition is to be used. SANS 61156-3:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .61156-3 IEC:2008(E) 7 2.2 Materials a
42、nd cable construction 2.2.1 General remarks The choice of materials and cable construction shall be suitable for the intended application and installation of the cable. Particular care shall be taken to meet any special requirements for fire performance (such as burning properties, smoke generation,
43、 evolution of halogen gas, etc.). 2.2.2 Cable construction The cable construction shall be in accordance with the details and dimensions given in the relevant detail cable specification. 2.2.3 Conductor The conductor shall consist of annealed copper. The conductor may be solid or stranded. The solid
44、 conductor nominal diameter shall be between 0,3 mm and 0,6 mm. Preferably, the stranded conductor should consist of seven strands. The conductor shall be plain or tinned copper. Joints in the complete element shall not be permitted. 2.2.4 Insulation The conductor shall be insulated with a suitable
45、thermoplastic material. Examples of suitable materials are: polyolefin; PVC; fluoropolymer; low-smoke zero halogen thermoplastic material. The insulation may be solid or cellular with or without a solid dielectric skin. The insulation shall be continuous and shall have a thickness such that the comp
46、leted cable meets the specified requirements. The nominal thickness of insulation shall be compatible with the method of conductor connection. 2.2.5 Colour code of insulation The colour code is not specified but shall be indicated in the relevant detail specification. The colours shall be readily id
47、entifiable and shall correspond reasonably with the standard colours shown in IEC 60304. NOTE It is acceptable to mark or stripe the “a“ wire with the colour of the “b“ wire to facilitate pair identification. 2.2.6 Cable element The cable element shall be a pair or quad adequately twisted to aid pai
48、r/quad identification. 2.2.7 Screening of the cable element When required, a screen for the cable element may be provided. The screen shall be in accordance with 2.2.7 of IEC 61156-1:2002. SANS 61156-3:2009This s tandard may only be used and printed by approved subscription and freemailing clients o
49、f the SABS . 8 61156-3 IEC:2008(E) 2.2.8 Cable make-up The cable elements shall be assembled to form the cable core. The core of the cable may be wrapped with a protective layer of non-hygroscopic and non-wicking material. 2.2.9 Screening of the cable core When required by the relevant detail specification, a screen for the cable core may be provided. The screen shall be in accordance with 2.2.9 of IEC 61156-1:2002. 2.2.10 Sheath The sheath material shall consist of a suitable thermoplas
