1、 IEC 61156-11 Edition 1.0 2019-05 INTERNATIONAL STANDARD Multicore and symmetrical pair/quad cables for digital communications Part 11:Symmetrical single pair cables with transmission characteristics up to 600 MHz Horizontal floor wiring Sectional specification IEC 61156-11:2019-05(en)THIS PUBLICATI
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9、tries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002.Some entries have been collected from earlier publications of IEC TC 37,77,86 and CISPR.IEC 61156-11 Edition 1.0 2019-05 INTERNATIONAL STANDARD Multicore and symmetrical pair/quad cables
10、 for digital communications Part 11:Symmetrical single pair cables with transmission characteristics up to 600 MHz Horizontal floor wiring Sectional specification INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.120.20 ISBN 978-2-8322-6678-6 Registered trademark of the International Electrotechnical
11、 Commission Warning!Make sure that you obtained this publication from an authorized distributor.2 IEC 61156-11:2019 IEC 2019 CONTENTS FOREWORD.5 1 Scope.7 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
12、4.3 Climatic conditions.8 5 Materials and cable construction.8 5.1 General remarks.8 5.2 Cable construction.9 5.3 Conductor.9 5.4 Insulation.9 5.5 Cable element.9 5.6 Screening of the cable element.9 5.7 Cable make-up.9 5.8 Screening of the cable core.9 5.9 Sheath.9 5.10 Identification.10 5.11 Finis
13、hed 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 Resistance unbalance.10 6.2.3 Dielectric strength.11 6.2.4 Insulation resistance.11 6.2.5 Mutual capacitance.11 6.2.6 Capacitance unbalance.11 6.2
14、.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 propagation(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 and EL TCTL).1
15、3 6.3.5 Alien(exogenous)near-end crosstalk(PS ANEXT).13 6.3.6 Alien(exogenous)far-end crosstalk(PS AACR-F).14 6.3.7 Alien(exogenous)crosstalk of bundled cables.14 6.3.8 Impedance.14 6.3.9 Return loss(RL).14 6.4 Mechanical and dimensional characteristics and requirements.15 6.4.1 Dimensional requirem
16、ents.15 6.4.2 Elongation at break of the conductor.15 6.4.3 Tensile strength of the insulation.15 IEC 61156-11:2019 IEC 2019 3 6.4.4 Elongation at break of the insulation.15 6.4.5 Adhesion of the insulation to the conductor.15 6.4.6 Elongation at break of the sheath.15 6.4.7 Tensile strength of the sheath.15 6.4.8 Crush test of the cable.15 6.4.9 Impact test of the cable.15 6.4.10 Bending under tension.16 6.4.11 Repeated bending of the cable.16 6.4.12 Tensile performance of the cable.16 6.4.13 S
