IEC 60708:2005

Low-frequency cables with polyolefin insulation and moisture barrier polyolefin sheath

IEC 60708:2005 is intended to define polyolefin insulated cables for insertion into local outdoor networks. Is applicable to polyolefin insulated and moisture barrier polyolefin sheathed telephone cables, filled or unfilled with copper conductors, includes general design details and requirements for dimensions and other constructional details as well as mechanical, electrical and environmental characteristics for all types of low-frequency cables with polyolefin insulation (solid or cellular), filled or unfilled, and moisture barrier polyolefin sheath (with integral suspension strand). The contents of the corrigendum of August 2016 have been included in this copy.

Câbles pour basses fréquences à isolation polyoléfine et gaine polyoléfine à barrière d'étanchéité

L'IEC 60708:2005 est destinée à définir des câbles à isolation polyoléfine prévus pour être insérés dans des réseaux locaux en extérieur. La présente norme s'applique aux câbles téléphoniques à isolation polyoléfine et à gaine polyoléfine à barrière d'étanchéité, remplis ou non avec des conducteurs en cuivre, utilisés comme:
a) câbles pour installation en conduites.
b) câbles pour enterrement direct en pleine terre.
c) câbles avec brin de support intégré pour les installations aériennes. La présente norme est conforme aux Recommandations UIT-T. La présente norme inclut des détails de conception générale et des exigences sur les dimensions et autres détails de construction ainsi que des caractéristiques mécaniques, électriques et environnementales pour tous les types de câbles pour basses fréquences à isolation polyoléfine (massive ou cellulaire), remplis ou non et à gaine polyoléfine à barrière d'étanchéité (avec brin de support intégré). Le contenu du corrigendum d'août 2016 a été pris en considération dans cet exemplaire.

General Information

• Status: Published
• Publication Date: 23-Jun-2005
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.060.20 - Cables
• Technical Committee: SC 46C - Wires and symmetric cables
• Drafting Committee: MT 1 - TC 46/SC 46C/MT 1
• Current Stage: PPUB - Publication issued
• Start Date: 15-Aug-2005
• Completion Date: 24-Jun-2005

Relations

• Corrected By: IEC 60708:2005/COR1:2016 - Corrigendum 1 - Low-frequency cables with polyolefin insulation and moisture barrier polyolefin sheath
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD 60708
First edition
2005-06
Low-frequency cables with polyolefin insulation
and moisture barrier polyolefin sheath

Reference number
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INTERNATIONAL IEC
STANDARD 60708
First edition
2005-06
Low-frequency cables with polyolefin insulation
and moisture barrier polyolefin sheath
 IEC 2005  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 U
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – 60708  IEC:2005(E)
CONTENTS
FOREWORD.4
1 Scope.6
2 Normative references .6
3 Quality assurance.7
4 Cable construction.7
4.1 Conductor .7
4.1.1 Conductor material .7
4.1.2 Type of conductor.7
4.1.3 Conductor-finish .7
4.1.4 Continuity of conductor.7
4.2 Insulation .8
4.2.1 Insulation material .8
4.2.2 Insulation thickness .8
4.2.3 Colour of insulated conductor .8
4.3 Cabling element .8
4.4 Stranding .8
4.5 Colour code.8
4.5.1 General .8
4.5.2 Sub-units, units and cables up to and including 100 pairs or
100 quads .9
4.5.3 Cables of more than 100 pairs or 100 quads.9
4.6 Spare pairs or quads .10
4.7 Filling .10
4.8 Core protection .10
4.9 Sheath .10
4.9.1 Sheath material .10
4.9.2 Application of the sheath .10
4.10 Cable protection .11
4.11 Finished cable.11
4.11.1 Overall diameter .11
4.11.2 Sheath marking .11
4.11.3 Sealing of ends .12
4.12 Delivery.12
5 Mechanical requirements.12
5.1 Conductor .12
5.2 Insulation .12
5.3 Sheath .12
5.3.1 Tensile strength and elongation.12
5.3.2 Adhesion of aluminium tape to the polyethylene .12
5.3.3 Adhesion of aluminium tape at the overlap .13
5.4 Finished cable.13
5.4.1 Sheath integrity .13
5.4.2 Resistance to water penetration .13
5.4.3 Cable drip.13

60708  IEC:2005(E) – 3 –
6 Thermal stability and environmental requirements .13
6.1 Insulation .13
6.1.1 Thermal oxidative stability (OIT-test) .13
6.1.2 Shrinkage .14
6.1.3 Wrapping test of insulation after thermal aging .14
6.1.4 Bending test at low temperature .14
6.2 Sheath .14
6.2.1 Elongation at break after ageing .14
6.2.2 Resistance to weathering .14
6.2.3 Resistance to environmental stress cracking .14
7 Electrical requirements .14
7.1 General .14
7.2 Electrical resistance of conductor .14
7.3 Electrical resistance unbalance .15
7.4 Dielectric strength .15
7.5 Insulation resistance .15
7.6 Mutual capacitance .15
7.7 Capacitance unbalance .16
7.8 Transmission characteristics (when used for digital communication).17
7.8.1 Attenuation .17
7.8.2 Near End Crosstalk (NEXT) .17
7.8.3 Equal Level Far-end Crosstalk (ELFEXT) .17
7.8.4 Power sum (PS) of crosstalk loss .17
7.8.5 Characteristic impedance .17
7.8.6 Velocity of propagation .17

Annex A (normative) Colour code: 10 pair or 5 quad count.19
Annex B (normative) Colour code: sub-unit identification for 50 pair (25 quad) and
100 pair (50 quad) cables or units, using 10 pair or 5 quad count .20
Annex C (normative) Colour code: 25 pair count .21
Annex D (normative) Colour code: unit identification for 50 pair or quad and 100 pair
or quad cables or units, using 25 pair or quad count .22
Annex E (normative) Colour code: 25 quad count .23
Annex F (normative) Colour code: unit identification for cables with more than
100 pairs, 25 pair count .24
Annex G (normative) Colour code: unit identification for cables with more than
100 pairs or 50 quads, using 10 pair or 5 quad count or 25 quad count.26

– 4 – 60708  IEC:2005(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-FREQUENCY CABLES WITH POLYOLEFIN INSULATION
AND MOISTURE BARRIER POLYOLEFIN SHEATH

FOREWORD
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...

IEC 60708 ®
Edition 1.0 2005-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-frequency cables with polyolefin insulation and moisture barrier polyolefin
sheath
Câbles pour basses fréquences à isolation polyoléfine et gaine polyoléfine à
barrière d'étanchéité
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC 60708 ®
Edition 1.0 2005-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-frequency cables with polyolefin insulationand moisture barrier polyolefin

sheath
Câbles pour basses fréquences à isolation polyoléfine et gaine polyoléfine à

barrière d'étanchéité
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX U
ICS 29.060.20 ISBN 978-2-8322-1510-4

– 2 – IEC 60708:2005 © IEC 2005
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Quality assurance . 7
4 Cable construction . 7
4.1 Conductor . 7
4.1.1 Conductor material . 7
4.1.2 Type of conductor . 7
4.1.3 Conductor-finish . 7
4.1.4 Continuity of conductor . 7
4.2 Insulation . 8
4.2.1 Insulation material . 8
4.2.2 Insulation thickness . 8
4.2.3 Colour of insulated conductor . 8
4.3 Cabling element . 8
4.4 Stranding . 8
4.5 Colour code . 8
4.5.1 General . 8
4.5.2 Sub-units, units and cables up to and including 100 pairs or
100 quads . 9
4.5.3 Cables of more than 100 pairs or 100 quads . 9
4.6 Spare pairs or quads . 10
4.7 Filling . 10
4.8 Core protection . 10
4.9 Sheath . 10
4.9.1 General . 10
4.9.2 Sheath material . 10
4.9.3 Application of the sheath . 10
4.10 Cable protection . 11
4.11 Finished cable . 11
4.11.1 Overall diameter . 11
4.11.2 Sheath marking . 11
4.11.3 Sealing of ends . 12
4.12 Delivery . 12
5 Mechanical requirements . 12
5.1 Conductor . 12
5.2 Insulation . 12
5.3 Sheath . 12
5.3.1 Tensile strength and elongation . 12
5.3.2 Adhesion of aluminium tape to the polyethylene . 12
5.3.3 Adhesion of aluminium tape at the overlap . 13
5.4 Finished cable . 13
5.4.1 Sheath integrity . 13
5.4.2 Resistance to water penetration . 13
5.4.3 Cable drip . 13

6 Thermal stability and environmental requirements . 13
6.1 Insulation . 13
6.1.1 Thermal oxidative stability (OIT-test) . 13
6.1.2 Shrinkage . 14
6.1.3 Wrapping test of insulation after thermal aging . 14
6.1.4 Bending test at low temperature . 14
6.2 Sheath . 14
6.2.1 Elongation at break after ageing . 14
6.2.2 Resistance to weathering . 14
6.2.3 Resistance to environmental stress cracking . 14
7 Electrical requirements . 14
7.1 General . 14
7.2 Electrical resistance of conductor . 14
7.3 Electrical resistance unbalance . 15
7.4 Dielectric strength . 15
7.5 Insulation resistance . 15
7.6 Mutual capacitance . 15
7.7 Capacitance unbalance . 16
7.8 Transmission characteristics (when used for digital communication) . 17
7.8.1 Attenuation . 17
7.8.2 Near End Crosstalk (NEXT) . 17
7.8.3 Equal Level Far-end Crosstalk (ELFEXT) . 17
7.8.4 Power sum (PS) of crosstalk loss . 17
7.8.5 Characteristic im
...