IEC 61156-6:2002

Multicore and symmetrical pair/quad cables for digital communications - Part 6: Symmetrical pair/quad cables with transmission characteristics up to 600 MHz - Work area wiring - Sectional specification

This sectional specification relates to IEC 61156-1: Multicore and symmetrical pair/quad cables for digital communications Part 1: Generic specification. The cables described herein are specifically intended to construct patch, equipment, and work area cords for class D, E and F channels, as defined in IEC 11801:2000, Information technology Generic cabling for customer premises (see Table 1).

General Information

• Status: Published
• Publication Date: 19-Mar-2002
• ICS: 33.120.20 - Wires and symmetrical cables
• Technical Committee: SC 46C - Wires and symmetric cables
• Drafting Committee: WG 7 - TC 46/SC 46C/WG 7
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 05-Jun-2007

Relations

• Revised: IEC 61156-6:2007 - Multicore and symmetrical pair/quad cables for digital communications - Part 6: Symmetrical pair/quad cables with transmission characteristics up to 1 000 MHz - Work area wiring - Sectional specification
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD
61156-6
First edition
2002-03
Multicore and symmetrical pair/quad cables
for digital communications –
Part 6:
Symmetrical pair/quad cables with transmission
characteristics up to 600 MHz–
Work area wiring – Sectional specification
Câbles multiconducteurs à paires symétriques et quartes
pour transmissions numériques –
Partie 6:
Câbles à paires symétriques et quartes avec caractéristiques
de transmission allant jusqu'à 600 MHz –
Raccordement de terminal – Spécification intermédiaire

Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.

Consolidated editions
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edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
base publication incorporating amendment 1 and the base publication incorporating
amendments 1 and 2.
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INTERNATIONAL IEC
STANDARD
61156-6
First edition
2002-03
Multicore and symmetrical pair/quad cables
for digital communications –
Part 6:
Symmetrical pair/quad cables with transmission
characteristics up to 600 MHz–
Work area wiring – Sectional specification
Câbles multiconducteurs à paires symétriques et quartes
pour transmissions numériques –
Partie 6:
Câbles à paires symétriques et quartes avec caractéristiques
de transmission allant jusqu'à 600 MHz –
Raccordement de terminal – Spécification intermédiaire

 IEC 2002  Copyright - all rights reserved
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 the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail]  Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
R
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 61156-6  IEC:2002(E)
CONTENTS
FOREWORD.4

1 General .5

1.1 Scope.5

1.2 Normative references .6

1.3 Installation considerations.6

1.4 Climatic conditions.6

2 Definitions, materials and cable construction.6
2.1 Definitions .6
2.2 Materials and cable construction.6
2.2.1 General remarks.6
2.2.2 Cable construction .6
2.2.3 Conductor.6
2.2.4 Insulation.7
2.2.5 Colour code of insulation.7
2.2.6 Cable element .7
2.2.7 Screening of cable element.7
2.2.8 Cable make-up .7
2.2.9 Screening of cable core .7
2.2.10 Sheath.7
2.2.11 Colour of sheath .8
2.2.12 Identification .8
2.2.13 Finished cable .8
3 Characteristics and requirements.8
3.1 General remarks.8
3.2 Electrical characteristics .8
3.2.1 Conductor resistance .8
3.2.2 Resistance unbalance.8
3.2.3 Dielectric strength.8
3.2.4 Insulation resistance .8
3.2.5 Mutual capacitance .9
3.2.6 Capacitance unbalance pair to ground.9
3.2.7 Transfer impedance.9

3.2.8 Resistance of the screen.9
3.3 Transmission characteristics.9
3.3.1 Velocity of propagation, delay and differential delay (delay skew) .9
3.3.2 Attenuation .10
3.3.3 Unbalance attenuation .11
3.3.4 Near-end crosstalk.12
3.3.5 Far-end crosstalk (FEXT).13
3.3.6 Characteristic impedance.14
3.3.7 Return loss (RL) .15
3.3.8 Screening attenuation .15
3.3.9 Coupling attenuation .15

61156-6  IEC:2002(E) – 3 –
3.4 Mechanical and dimensional characteristics and requirements .16

3.4.1 Dimensional requirements.16

3.4.2 Elongation at break of the conductor .16

3.4.3 Elongation at break of the insulation.16

3.4.4 Elongation at break of the sheath.16

3.4.5 Tensile strength of the sheath .16

3.4.6 Crush test of the cable.16

3.4.7 Impact test of the cable.16

3.4.8 Repeated bending of the cable.16

3.4.9 Tensile performance of the cable .16

3.5 Environmental characteristics .16
3.5.1 Shrinkage of insulation.16
3.5.2 Wrapping test of insulation after thermal ageing .16
3.5.3 Bending test of insulation at low temperature .16
3.5.4 Elongation at break of the sheath after ageing.17
3.5.5 Tensile strength of the sheath after ageing.17
3.5.6 Sheath pressure test at high temperature.17
3.5.7 Cold bend test of the cable .17
3.5.8 Heat shock test.17
3.5.9 Flame propagation characteristics of a single cable.17
3.5.10 Flame propagation characteristics of bunched cables.17
3.5.11 Acid gas evolution.17
3.5.12 Smoke generation.17
3.5.13 Toxic gas emission .17
3.5.14 Combined flame and smoke test .17
4 Introduction to the blank detail specification .17

– 4 – 61156-6  IEC:2002(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION

___________
MULTICORE AND SYMMETRICAL PAIR/QUAD CABLES

FOR DIGITAL COMMUNICATIONS –
Part 6: Symmetrical pair/quad cables

with transmission characteristics up to 600 MHz –

Work area wiring – Sectional specification

FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all
national electrotechnical committees (IEC National Committees). The object of the IEC is to promote international
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3) The documents produced have the form of recommendations for international use and are published in the form of
standards, technical specifications, technical reports or guides and they are accepted by the National Committees
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4) In order to promote international unification, IEC National Committees undertake to apply IEC International Standards
transparently to the maximum extent possible in their national and regional standards. Any divergence between the
IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights. The IEC shall not be held responsible for identifying 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, RF connectors and
accessories for communication and signalling.
The text of this standard is based on the following documents:
FDIS Report on voting
46C/512/FDIS 46C/518/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 standard should be read in conjunction with IEC 61156-1.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until 2004.
At this date, the publication will be
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