1、 IEC 61156-2 Edition 3.0 2010-04 INTERNATIONAL STANDARD Multicore and symmetrical pair/quad cables for digital communications Part 2: Symmetrical pair/quad cables with transmission characteristics up to 100 MHz Horizontal floor wiring Sectional specification IEC 61156-2:2010(E) THIS PUBLICATION IS C
2、OPYRIGHT PROTECTED Copyright 2010 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
3、 IEC or IECs member National Committee 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 Ce
4、ntral Office 3, rue de Varemb CH-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 technolo
5、gies. About IEC publications The 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 en
6、ables you to search by a variety 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 It also gives information on projects, withdrawn and replaced publications.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 mont
7、h all new publications released. 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. Als
8、o known as the International Electrotechnical 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
9、 11 Fax: +41 22 919 03 00 IEC 61156-2 Edition 3.0 2010-04 INTERNATIONAL STANDARD Multicore and symmetrical pair/quad cables for digital communications Part 2: Symmetrical pair/quad cables with transmission characteristics up to 100 MHz Horizontal floor wiring Sectional specification INTERNATIONAL EL
10、ECTROTECHNICAL COMMISSION P ICS 33.120.20 PRICE CODE ISBN 978-2-88910-419-2 Registered trademark of the International Electrotechnical Commission 2 61156-2 IEC:2010(E) CONTENTS FOREWORD.4 1 General 6 1.1 Scope and object.6 1.2 Normative references 6 1.3 Installation considerations6 2 Definitions and
11、 requirements.7 2.1 Definitions .7 2.2 Materials and cable construction7 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 8 2.2.8 Cable make-up 8 2.2.9 Screening of the c
12、able core8 2.2.10 Sheath.8 2.2.11 Colour of sheath 8 2.2.12 Identification8 2.2.13 Finished cable .8 3 Characteristics and requirements9 3.1 General remarks9 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 resistan
13、ce9 3.2.5 Mutual capacitance9 3.2.6 Capacitance unbalance9 3.2.7 Transfer impedance.10 3.3 Transmission characteristics10 3.3.1 Velocity of propagation (phase velocity) .10 3.3.2 Attenuation 11 3.3.3 Unbalance attenuation .11 3.3.4 Near-end crosstalk (NEXT).11 3.3.5 Far-end crosstalk.11 3.3.6 Charac
14、teristic impedance.12 3.3.7 Structural return loss (SRL) 12 3.4 Mechanical and dimensional characteristics and requirements .13 3.4.1 Dimensional requirements13 3.4.2 Elongation at break of the conductors 13 3.4.3 Elongation at break of the insulation.13 3.4.4 Elongation at break of the sheath.13 3.
15、4.5 Tensile strength of the sheath13 3.4.6 Crush test of the cable.13 3.4.7 Impact test of the cable13 61156-2 IEC:2010(E) 3 3.4.8 Bending under tension .13 3.4.9 Tensile performance of the cable .13 3.5 Environmental characteristics 13 3.5.1 Shrinkage of insulation.13 3.5.2 Wrapping test of insulat
16、ion after thermal ageing.13 3.5.3 Bending test of insulation at low temperature .14 3.5.4 Elongation at break of the sheath after ageing14 3.5.5 Tensile strength of the sheath after ageing.14 3.5.6 Sheath pressure test at high temperature.14 3.5.7 Cold bend test of the cable 14 3.5.8 Heat shock test
17、14 3.5.9 Flame propagation characteristics of a single cable14 3.5.10 Flame propagation characteristics of bunched cables.14 3.5.11 Acid gas evolution14 3.5.12 Smoke generation14 3.5.13 Toxic gas emission 14 3.5.14 Combined flame and smoke test for cables in environmental air handling space 15 4 Int
18、roduction to the blank detail specification 15 Bibliography16 Table 1 Constants 11 Table 2 NEXT constants11 Table 3 Input impedance values .12 Table 4 Function fitted impedance12 Table 5 Structural return loss (dB min) .12 4 61156-2 IEC:2010(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MULTICORE A
19、ND SYMMETRICAL PAIR/QUAD CABLES FOR DIGITAL COMMUNICATIONS Part 2: Symmetrical pair/quad cables with transmission characteristics up to 100 MHz Horizontal floor wiring Sectional specification FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardizat
20、ion 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 publishes Internatio
21、nal 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; any IEC National Committee interested in the subject dealt with may participate in t
22、his 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 between the t
23、wo 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 representation from all interested IEC National Committees. 3) IEC Publications have t
24、he 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 cannot be held responsible for the way in which they are used or for any misinte
25、rpretation 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 corresponding national
26、 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 services carr
27、ied 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 National Com
28、mittees 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) Attention is drawn
29、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 shall not be
30、 held responsible for identifying any or all such patent rights. International Standard IEC 61156-2 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. Thi
31、s third edition cancels and replaces the second edition published in 2003 and constitutes a technical revision. This new edition includes category 3 and 5 cables. This standard is to be read in conjunction with IEC 61156-1:2002. 61156-2 IEC:2010(E) 5 The text of this standard is based on the followi
32、ng documents: FDIS Report on voting 46C/911/FDIS 46C/914/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. A list of all the part
33、s in 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 stability date indicated on the IEC web site unde
34、r “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. 6 61156-2 IEC:2010(E) MULTICORE AND SYMMETRICAL P
35、AIR/QUAD CABLES FOR DIGITAL COMMUNICATIONS Part 2: Symmetrical pair/quad cables with transmission characteristics up to 100 MHz Horizontal floor wiring Sectional specification 1 General 1.1 Scope and object This sectional specification relates to IEC 61156-1:2002. The cables are specifically intende
36、d for horizontal floor wiring as defined in ISO/IEC 11801:1995. This specification defines individually screened or unscreened pair/quad cables, with or without overall common screen for horizontal floor wiring. These cables are suitable for the various communication systems for which the reference
37、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, for example, the public mains electricity su
38、pply. The normal operating temperature range is 40 C to +60 C. 1.2 Normative 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 docume
39、nt (including any amendments) applies. IEC 60304, Standard colours for insulation for low-frequency cables and wires IEC 61156-1:2002 1) , Multicore and symmetrical pair/quad cables for digital communications Part 1: Generic specification IEC 61156-2-1, Multicore and symmetrical pair/quad cables for
40、 digital communications Part 2-1: Horizontal floor wiring Blank detail specification 1.3 Installation considerations The recommended temperature range during installation is 10 C to +60 C. The actual temperature range during installation may be indicated in the relevant detail specification. Under s
41、tatic conditions, the normal operating temperature range shall be 40 C to +60 C. See 1.3 of IEC 61156-1:2002. _ 1)A more recent version of this standard exists (2007), 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
42、. 61156-2 IEC:2010(E) 7 2 Definitions and requirements 2.1 Definitions See 2.1 of IEC 61156-1:2002. 2.2 Materials and 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
43、shall be taken to meet any special requirements for flame performance (such as burning properties, smoke generation, evolution of halogen gas, etc.) as well as requirements to meet environmental regulations. 2.2.2 Cable construction The cable construction shall be in accordance with the details and
44、dimensions given in the relevant detail specification. 2.2.3 Conductor The conductor shall consist of annealed copper. The conductor shall be a solid annealed copper conductor, in accordance with 2.2.3 of IEC 61156-1:2002 and shall have a nominal diameter between 0,5 mm and 0,65 mm. A conductor diam
45、eter up to 0,8 mm may be used if compatible with the connecting hardware. 2.2.4 Insulation The conductor shall be insulated with a suitable thermoplastic material. Examples of suitable materials are: polyolefin; PVC; fluoropolymer; low-smoke zero-halogen thermoplastic material. Insulation may be sol
46、id or cellular, with or without a solid dielectric skin. The insulation shall be continuous and shall have a thickness such that the completed 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
47、 insulation The colour code is not specified but shall be indicated in the relevant detail specification. The colours shall be readily identifiable 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 th
48、e “b“ wire to facilitate pair identification. 2.2.6 Cable element The cable element shall be a pair or quad adequately twisted to aid pair/quad identification. The number and type of elements shall be given in the relevant detail specification. 8 61156-2 IEC:2010(E) 2.2.7 Screening of the cable elem
49、ent When required, a screen for the cabling element may be provided. The screen shall be in accordance with 2.2.7 of IEC 61156-1:2002. 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 pr
