IEC IEC 61156-11 Edition2.0 2023-05 REDLINE VERSION INTERNATIONAL STANDARD colour inside Multicore and symmetrical pairlquad cables for digital communications - Part 11: Symmetrical single pair cables with transmission characteristics up to-600 MHz 1,25 GHz - Horizontal floor wiring - Sectional specification IEC 61156-11:2023-05RLV(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2023 IEC, Geneva, Switzerland either IEC or IEC's 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, piease contact the address below or your local IEC member National Committee for further information. IEC Secretariat Tel.: +41 22 919 02 11 3, rue de Varembé [email protected] CH-1211 Geneva 20 www.iec.ch Switzerland Aboutthe IEC International Standards forall electrical, electronic and related technologies About IEC publications latestedition,a corrigendumoranamendmentmighthavebeenpublished IECpublicationssearch-webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the varietyofcriteria (reference number, text,technical publicationspreviews.Withasubscriptionyouwillalwayshave committee, .). It also gives information on projects, replaced access to up to date content tailored to your needs. and withdrawn publications. Electropedia-www.electropedia.org IEc Just Published - webstore.iec.ch/justpublished The world's leading online dictionary on electrotechnology, Stay up to date on all new IEC publications. Just Published containing more than 22 300 terminological entries in English details all new publications released.Available online and once and French, with equivalent terms in 19 additional languages. a month by email. Also known as the international Electrotechnical Vocabulary (IEV) online IECCustomerServiceCentre-webstore.iec.ch/csc if you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: [email protected]. IEC IEC 61156-11 Edition 2.02023-05 REDLINE VERSION INTERNATIONAL STANDARD colour inside Multicore and symmetrical pairlquad cables for digital communications - Part 11: Symmetrical single pair cables with transmission characteristics up to-600 MHz 1,25 GHz - Horizontal floor wiring - Sectional specification INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS33.120.20 ISBN 978-2-8322-6984-8 Warning! Make sure that you obtained this publication from an authorized distributor. - 2 - IEC 61156-11:2023 RLV @ IEC 2023 CONTENTS FOREWORD 5 1 Scope. 2 Normative references 3 Terms and definitions. 8 4 Installation considerations 4.1 General remarks 4.2 Bending radius of installed cable.... 8 4.3 Climatic conditions... 5 Materials and cable construction 5.1 General remarks . 5.2 Cable construction 5.3 Conductor 5.4 Insulation.. 5.5 Cable element. 5.6 Screening of the cable element. 5.7 Cable make-up... 9 5.8 Screening of the cable core 9 5.9 Sheath .. 5.10 Identification... .10 5.11 Finished cable . 10 6 Characteristics and requirements ... 10 6.1 General remarks .... 10 6.2 Electrical characteristics and tests 6.2.1 Conductor resistance.. 6.2.2 Resistance unbalance.. 6.2.3 Dielectric strength.... 6.2.4 Insulation resistance. 11 6.2.5 Mutual capacitance..... 6.2.6 Capacitance unbalance .. 11 6.2.7 Transfer impedance .... 11 6.2.8 Coupling attenuation and low frequency coupling attenuation 6.2.9 Current-carrying capacity.... 13 6.3 Transmission characteristics.. 13 6.3.1 Velocity of propagation (phase velocity)... 13 6.3.2 Phase delay and differential delay (delay skew).. 6.3.3 Attenuation (α)... 6.3.4 Unbalance attenuation (TCL and EL TCTL). .14 6.3.5 Alien (exogenous) near-end crosstalk (PS ANEXT) 16 6.3.6 Alien (exogenous) far-end crosstalk (PS AACR-F) .16 6.3.7 Alien (exogenous) crosstalk of bundled cables 17 6.3.8 Impedance... .