IEC 62012-1:2002

Multicore and symmetrical pair/quad cables for digital communications to be used in harsh environments - Part 1: Generic specification

specifies the definitions and test methods, when used in harsh environment, of symmetrical pair and quad cables used in digital communication systems such as ISDN, local area networks and data communication systems. gives guidance concerning the design and testing of these cables.

Câbles multiconducteurs à paires symétriques et quartes pour transmissions numériques utilisés en environnements sévéres - Partie 1: Spécification générique

spécifie, dans le cas d'utilisation en environnements sévères, les définitions et les méthodes d'essai pour les câbles multiconducteurs à paires symétriques et quartes utilisés dans les systèmes en transmissions numériques tels que RNIS (ISDN), les réseaux locaux et les systèmes de transmission de données. donne des lignes directrices pour la conception et la vérification de ces câbles

General Information

• Status: Published
• Publication Date: 23-Jun-2002
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• 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: PPUB - Publication issued
• Start Date: 31-Jul-2002
• Completion Date: 24-Jun-2002

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD
62012-1
First edition
2002-06
Multicore and symmetrical pair/quad cables
for digital communications to be used
in harsh environments –
Part 1:
Generic specification
Câbles multiconducteurs à paires symétriques
et quartes pour transmission numérique utilisés
en environnement difficile –
Partie 1: Spécification générique
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.
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INTERNATIONAL IEC
STANDARD
62012-1
First edition
2002-06
Multicore and symmetrical pair/quad cables
for digital communications to be used
in harsh environments –
Part 1:
Generic specification
Câbles multiconducteurs à paires symétriques
et quartes pour transmission numérique utilisés
en environnement difficile –
Partie 1: Spécification générique
 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
XA
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 62012-1  IEC:2002(E)
CONTENTS
FOREWORD.4
INTRODUCTION.5
1 General .6
1.1 Scope.6
1.2 Normative references .6
1.3 Definitions .7
1.4 Environmental considerations.7
2 Materials and cable construction .7
2.1 General remarks.7
2.2 Cable construction.8
2.3 Identification.10
2.4 Finished cable.10
3 Test methods.10
3.1 General remarks.10
3.2 Electrical tests.10
3.3 Mechanical and dimensional measurement tests .10
3.4 Environmental tests.15
3.5 Temperature tests .19
3.6 Chemical tests.22
3.7 Radiation tests .23
Annex A (normative) Horizontal integrated fire-test method.27
A.1 Definitions, symbols and abbreviations .27
A.2 Test environment .27
A.3 Test apparatus.27
A.4 Test specimens.35
A.5 Calibration and maintenance of test equipment.36
A.6 Test specimen preparation.40
A.7 Test procedures.41
A.8 Post-test clean-up and inspection .43
A.9 Calculations.43
A.10 Report .46
Annex B (normative) Method for determining suitability of oxygen analysers for making
heat release measurements .47
B.1 General .47
B.2 Procedure.47
B.3 Additional precautions .47
Annex C (informative) Material information list .48
C.1 Analyser .48
C.2 Fire-test chamber .48

62012-1  IEC:2002(E) – 3 –
C.3 Firebrick .48
C.4 Inside glass panes.48
C.5 Lamp .49
C.6 Recording device .49
C.7 Bi-directional probe.49
C.8 Neutral density filters.49
C.9 Gas calorimeter .49
C.10 Standard insulated conductor (calibration cable).49
Annex D (informative) Brick sizes .50
Bibliography.51
Figure 1 – Fixture for cable crushing test .11
Figure 2 – Bending under tension .12
Figure 3 – Tensile performance measuring apparatus.14
Figure 4 – Example of temperature versus time .22
Figure 5 – Test set up for radiation .25
Figure A.1 – Schematic of the air-inlet chamber.28
Figure A.2 – Schematic of the fire test chamber.30
Figure A.3 – Cross-section of the fire test chamber (Section B-B, Figure A.2) .30
Figure A.4 – Schematic of the exhaust transition .32
Figure A.5 – Smoke measurement system .33
Figure A.6 – Location of exhaust transition, exhaust duct, smoke measurement system
and damper .34
Figure A.7 – Details of ladder cable tray and supports .34
Figure A.8 – Schematic of gas sampling system .36
Figure A.9 – Temperature history of inorganic reinforced cement board at
thermocouple in air (7 m) .39
Table 1 – Requirement for vibration .16
Table 2 – Sock severities.17
Table 3 – Characteristics to be checked versus the frequency range of the application.18
Table 4 – Circuit integrity classes E .19
Table 5 – Total dose/dose rate combinations .26
Table D.1 – Sizes of bricks .50

– 4 – 62012-1  IEC:2002(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
MULTICORE AND SYMMETRICAL PAIR/QUAD CABLES FOR DIGITAL
COMMUNICATIONS TO BE USED IN HARSH ENVIRONMENTS –
Part 1: Generic specification
FOREWORD
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of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62012-1 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 RVD
46C/503/FDIS 46C/535/RVD
Full information on the voting for the approval of this standard ca
...

IEC 62012-1
Edition 1.0 2002-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Multicore and symmetrical pair/quad cables for digital communications to be
used in harsh environments –
Part 1: Generic specification
Câbles multiconducteurs à paires symétriques et quartes pour transmissions
numériques utilisés en environnements sévères –
Partie 1: Spécification générique
All rights reserved. Unless otherwise specified, 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 either IEC or
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IEC 62012-1
Edition 1.0 2002-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Multicore and symmetrical pair/quad cables for digital communications to be
used in harsh environments –
Part 1: Generic specification
Câbles multiconducteurs à paires symétriques et quartes pour transmissions
numériques utilisés en environnements sévères –
Partie 1: Spécification générique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XA
CODE PRIX
ICS 33.120.20 ISBN 2-8318-7422-X
– 2 – 62012-1 © CEI:2002
SOMMAIRE
AVANT-PROPOS .6
INTRODUCTION.10
1 Généralités.12
1.1 Domaine d’application.12
1.2 Références normatives.12
1.3 Définitions .14
1.4 Considérations d’environnement .14
2 Matériaux et construction du câble .16
2.1 Remarques générales.16
2.2 Construction du câble .16
2.3 Identification.20
2.4 Câble terminé .20
3 Méthodes d’essai.20
3.1 Remarques générales.20
3.2 Essais électriques.20
3.3 Essais mécaniques et dimensionnels .22
3.4 Essais d’environnement.30
3.5 Essais en température.38
3.6 Essais chimiques.44
3.7 Tenue aux radiations .46

Annexe A (normative )  Méthode intégrée d'essai horizontal au feu.54
A.1 Définitions, symboles et abréviations.54
A.2 Environnement d'essai .54
A.3 Appareillage d'essai .54
A.4 Eprouvettes d’essai.72
A.5 Etalonnage et entretien de l'équipement d'essai .74
A.6 Préparation de l’échantillon en essai .84
A.7 Procédures d’essai .86
A.8 Nettoyage et examen après essai.88
A.9 Calculs .90
A.10 Rapport.96

Annexe B (normative) Méthode pour déterminer la pertinence des analyseurs
d'oxygène pour réaliser des mesures de dégagement de chaleur.98
B.1 Généralités .98
B.2 Procédure .98
B.3 Précautions supplémentaires .98

Annexe C (informative) Liste d’information sur les matériaux . 100
C.1 Analyseur. 100
C.2 Chambre d'essai au feu . 100
C.3 Briques réfractaires. 100

62012-1 © IEC:2002 – 3 –
CONTENTS
FOREWORD.7
INTRODUCTION.11
1 General.13
1.1 Scope.13
1.2 Normative references.13
1.3 Definitions.15
1.4 Environmental considerations.15
2 Materials and cable construction .17
2.1 General remarks.17
2.2 Cable construction.17
2.3 Identification.21
2.4 Finished cable.21
3 Test methods.21
3.1 General remarks.21
3.2 Electrical tests.21
3.3 Mechanical and dimensional measurement tests .23
3.4 Environmental tests.31
3.5 Temperature tests.39
3.6 Chemical tests.45
3.7 Radiation tests.47

Annex A (normative) Horizontal integrated fire-test method .55
A.1 Definitions, symbols and abbreviations .55
A.2 Test environment .55
A.3 Test apparatus.55
A.4 Test specimens .73
A.5 Calibration and maintenance of test equipment.75
A.6 Test specimen preparation.85
A.7 Test procedures.87
A.8 Post-test clean-up and inspection .89
A.9 Calculations.91
A.10 Report.97

Annex B (normative) Method for determining suitability of oxygen analysers for making
heat release measurements .99
B.1 General.99
B.2 Procedure
...