1、 IEC 61156-5 Edition 2.1 2012-12 INTERNATIONAL STANDARD Multicore and symmetrical pair/quad cables for digital communications Part 5: Symmetrical pair/quad cables with transmission characteristics up to 1 000 MHz Horizontal floor wiring Sectional specification IEC61156-5:2009+A1:2012(E) colourinside
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9、 Service Centre: csciec.ch. IEC 61156-5 Edition 2.1 2012-12 INTERNATIONAL STANDARD Multicore and symmetrical pair/quad cables for digital communications Part 5: Symmetrical pair/quad cables with transmission characteristics up to 1 000 MHz Horizontal floor wiring Sectional specification INTERNATIONA
10、L ELECTROTECHNICAL COMMISSION ICS 33.120.20 ISBN 978-2-8322-0561-7 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. colourinside 2 61156-5 IEC:2009+A1:2012(E) CONTENTS FOREWORD . 5 1 Scope . 7
11、2 Normative references . 7 3 Terms and definitions . 8 4 Installation considerations 8 4.1 General remarks 8 4.2 Bending radius of installed cable. 8 4.3 Climatic conditions 8 5 Materials and cable construction 8 5.1 General remarks 8 5.2 Cable construction 8 5.2.1 Conductor 8 5.2.2 Insulation. 8 5.
12、2.3 Cable element . 9 5.2.4 Cable make-up 9 5.2.5 Screening of the cable core . 9 5.2.6 Sheath . 9 5.2.7 Identification 9 5.2.8 Finished cable . 10 6 Characteristics and requirements . 10 6.1 General remarks 10 6.2 Electrical characteristics and tests 10 6.2.1 Conductor resistance . 10 6.2.2 Resista
13、nce unbalance . 10 6.2.3 Dielectric strength . 10 6.2.4 Insulation resistance 10 6.2.5 Mutual capacitance 10 6.2.6 Capacitance unbalance . 10 6.2.7 Transfer impedance . 11 6.2.8 Coupling attenuation 11 6.2.9 Current-carrying capacity. 12 6.3 Transmission characteristics . 12 6.3.1 Velocity of propag
14、ation (phase velocity) 12 6.3.2 Phase delay and differential delay (delay skew) 12 6.3.3 Attenuation () . 12 6.3.4 Unbalance attenuation (TCL) . 13 6.3.5 Near-end crosstalk (NEXT) . 14 6.3.6 Far-end crosstalk (FEXT) . 14 6.3.7 Alien (exogenous) near-end crosstalk (ANEXT) 15 6.3.8 Alien (exogenous) f
15、ar-end crosstalk (AFEXT) . 15 6.3.9 Alien (exogenous) crosstalk of bundled cables 16 6.3.10 Impedance. 16 6.3.11 Return loss (RL) 17 6.4 Mechanical and dimensional characteristics and requirements 17 6.4.1 Dimensional requirements . 17 6.4.2 Elongation at break of the conductors 18 61156-5 IEC:2009+
16、A1:2012(E) 3 6.4.3 Tensile strength of the insulation . 18 6.4.4 Elongation at break of the insulation 18 6.4.5 Adhesion of the insulation to the conductor . 18 6.4.6 Elongation at break of the sheath 18 6.4.7 Tensile strength of the sheath . 18 6.4.8 Crush test of the cable 18 6.4.9 Impact test of
17、the cable . 18 6.4.10 Bending under tension . 18 6.4.11 Repeated bending of the cable 18 6.4.12 Tensile performance of the cable . 18 6.4.13 Shock-test requirements of the cable . 18 6.4.14 Bump-test requirements of the cable . 18 6.4.15 Vibration-test requirements of a cable . 19 6.5 Environmental
18、characteristics 19 6.5.1 Shrinkage of insulation 19 6.5.2 Wrapping test of insulation after thermal ageing 19 6.5.3 Bending test of insulation at low temperature 19 6.5.4 Elongation at break of the sheath after ageing . 19 6.5.5 Tensile strength of the sheath after ageing 19 6.5.6 Sheath pressure te
19、st at high temperature 19 6.5.7 Cold bend test of the cable 19 6.5.8 Heat shock test 19 6.5.9 Damp heat steady state . 19 6.5.10 Solar radiation (UV test) 19 6.5.11 Solvents and contaminating fluids 19 6.5.12 Salt mist and sulphur dioxide . 20 6.5.13 Water immersion . 20 6.5.14 Hygroscopicity . 20 6
20、.5.15 Wicking . 20 6.5.16 Flame propagation characteristics of a single cable . 20 6.5.17 Flame propagation characteristics of bunched cables 20 6.5.18 Halogen gas evolution . 20 6.5.19 Smoke generation . 20 6.5.20 Toxic gas emission 20 6.5.21 Integrated fire test . 20 7 Category 5e multipair cable
21、20 7.1 General . 20 7.2 Transmission . 21 8 Introduction to the blank detail specification . 21 Annex A (informative) Acronyms for common cable constructions 22 Bibliography 24 Figure 1 Impedance template . 17 Figure A.1 Common cable construction examples 23 4 61156-5 IEC:2009+A1:2012(E) Table 1 Cab
22、le categories . 7 Table 2 Transfer impedance 11 Table 3 Coupling attenuation . 11 Table 4 Attenuation equation constants . 13 Table 5 Near-end unbalance attenuation 14 Table 6 Worst-pair PS NEXT(1) values 14 Table 7 Worst-pair PS EL FEXT(1) values . 15 Table 8 PS ANEXT 15 Table 9 PS AACR-F . 16 Tabl
23、e 10 Return loss 17 Table A.1 Cable construction acronyms . 22 61156-5 IEC:2009+A1:2012(E) 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MULTICORE AND SYMMETRICAL PAIR/QUAD CABLES FOR DIGITAL COMMUNICATIONS Part 5: Symmetrical pair/quad cables with transmission characteristics up to 1 000 MHz-horizo
24、ntal floor wiring Sectional specification FOREWORD 1) The International 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 q
25、uestions 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 Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publicat
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27、ollaborates 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 matters express, as nearly as possible, an international consensus of opini
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31、ion 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 that they have the latest edition of this publication. 7) No liability shall at
32、tach 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 (including legal fe
33、es) 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 this publicat
34、ion. 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. This consolidated version of IEC 61156-5 consists of the second edition (2009) documen
35、ts 46C/878/FDIS, 46C/888/RVD, its amendment 1 (2012) documents 46C/954/CDV and 46C/967/RVC, its corrigenda of May 2009 and February 2010. It bears the edition number 2.1. The technical content is therefore identical to the base edition and its amendment and has been prepared for user convenience. A
36、vertical line in the margin shows where the base publication has been modified by amendment 1. Additions and deletions are displayed in red, with deletions being struck through. 6 61156-5 IEC:2009+A1:2012(E) International Standard IEC 61156-5 has been prepared by subcommittee 46C: Wires and symmetri
37、c cables, of IEC technical committee 46: Cables, wires, waveguides, R.F. connectors, R.F. and microwave passive components and accessories. This part of IEC 61156 is to be read in conjunction with IEC 61156-1. This edition includes the following significant technical changes with respect to the prev
38、ious edition: a) new requirements for new Cat6Aand Cat7Acables; b) revised requirements and tests for Cat5e, Cat6 and Cat7 cables. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of the IEC 61156 series, under the general title Multicore and s
39、ymmetrical pair/quad cables for digital communications can be found on the IEC website. The committee has decided that the contents of the base publication and its amendments will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data relate
40、d 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. IMPORTANT The “colour inside” logo on the cover page of this publication indicates that it co
41、ntains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this publication using a colour printer. 61156-5 IEC:2009+A1:2012(E) 7 MULTICORE AND SYMMETRICAL PAIR/QUAD CABLES FOR DIGITAL COMMUNICATIONS Part 5: Symmetrical pair/quad cabl
42、es with transmission characteristics up to 1 000 MHz-horizontal floor wiring Sectional specification 1 Scope This part of IEC 61156 describes the cables intended primarily for horizontal floor wiring as defined in ISO/IEC 11801. It covers individually screened, common screened and unscreened pairs o
43、r quads (see Annex A). The transmission characteristics and the frequency range (see Table 1) of the cables are specified at 20 C. Table 1 Cable categories Cable designation Maximum referenced frequency MHz Category 5e 100 Category 6 250 Category 6A500 Category 7 600 Category 7A1 000 These cables ca
44、n be used for various communication channels which use as many as four pairs simultaneously. In this sense, this sectional specification provides the cable characteristics required by system developers to evaluate new systems. The cables covered by this standard are intended to operate with voltages
45、 and currents normally encountered in communication systems. While these cables are not intended to be used in conjunction with low impedance sources, for example, the electric power supplies of public utility mains, they are intended to be used to support the delivery of low voltage and power appli
46、cations such as IEEE 802.3af (Power over Ethernet) and IEEE 802.3at (Power over Ethernet Plus). 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 e
47、dition of the referenced document (including any amendments) applies. IEC 61156-1, Multicore and symmetrical pair/quad cables for digital communications Part 1: Generic specification IEC 61156-5-1, Multicore and symmetrical pair/quad cables for digital communications Symmetrical pair/quad cables wit
48、h transmission characteristics up to 1 000 MHz Horizontal floor wiring Blank detail specification 8 61156-5 IEC:2009+A1:2012(E) IEC 62153-4-5, Metallic communication cables test methods Part 4-5: Electromagnetic compatibility (EMC) Coupling or screening attenuation Absorbing clamp method IEC 62153-4
49、-9, Metallic communication cable test methods Part 4-9: Electromagnetic compatibility (EMC) Coupling attenuation of screened balanced cables, triaxial method 3 Terms and definitions For the purposes of this document, the terms and definitions defined in IEC 61156-1 apply. 4 Installation considerations 4.1 General remarks Installation considerations are defined in Clause 4 of IEC 61156-1. 4.2 Bending radius of installed cable. The bending radius of
