IEC 60794-2-20:2013

Optical fibre cables - Part 2-20: Indoor cables - Family specification for multi-fibre optical cables

IEC 60794-2-20:2013 is a family specification covering multi-fibre optical cables for indoor use. The requirements of the sectional specification IEC 60794-2 are applicable to cables covered by this standard. Annex B contains a Blank Detail Specification and general guidance in case the cables are intended to be used in installation governed by the MICE table of ISO/IEC 24702 (Industrial premises). This third edition cancels and replaces the second edition published in 2008 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- removal of Annex C;
- reference to the most recent fibre standards;
- reference to the new series IEC 60794-1-2X. Keywords: family specification covering multi-fibre optical cables for indoor use
This publication is to be read in conjunction with IEC 60794-1-1:2011, IEC 60794-1-2:2013 and IEC 60794-2:2002.

Câbles à fibres optiques - Partie 2-20: Câbles intérieurs - Spécification de famille pour les câbles optiques multifibres

La CEI 60794-2-20:2013 est une spécification de famille qui couvre les câbles optiques multifibres pour utilisation intérieure. Les exigences de la spécification intermédiaire CEI 60794-2 sont applicables aux câbles couverts par la présente norme. L'Annexe B contient une Spécification Particulière Cadre et des lignes directrices générales dans le cas où les câbles sont destinés à être utilisés dans une installation relevant du tableau MICE de la norme ISO/CEI 24702 (locaux industriels). Cette troisième édition annule et remplace la deuxième édition publiée en 2008. Elle constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- la suppression de l'Annexe C;
- la référence aux normes de fibres les plus récentes;
- la référence à la nouvelle série CEI 60794-1-2X. Mots clés: spécification de famille qui couvre les câbles optiques multifibres pour utilisation intérieure
Cette publication doit être lue conjointement avec la CEI 60794-1-1:2011, la CEI 60794-1-2:2013 et la .

General Information

• Status: Published
• Publication Date: 04-Nov-2013
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.180.01 - Fibre optic systems in general
• Technical Committee: SC 86A - Fibres and cables
• Current Stage: PPUB - Publication issued
• Start Date: 30-Jun-2013
• Completion Date: 05-Nov-2013

Relations

• Revises: IEC 60794-2-20:2008 - Optical fibre cables - Part 2-20: Indoor cables - Family specification for multi-fibre optical distribution cables
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60794-2-20 ®
Edition 3.0 2013-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 2-20: Indoor cables – Family specification for multi-fibre optical cables

Câbles à fibres optiques –
Partie 2-20: Câbles intérieurs – Spécification de famille pour les câbles optiques
multifibres
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IEC 60794-2-20 ®
Edition 3.0 2013-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 2-20: Indoor cables – Family specification for multi-fibre optical cables

Câbles à fibres optiques –
Partie 2-20: Câbles intérieurs – Spécification de famille pour les câbles optiques

multifibres
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX S
ICS 33.180.01 ISBN 978-2-8322-1166-3

– 2 – 60794-2-20 © IEC:2013
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Construction . 7
3.1 General . 7
3.2 Optical fibres . 7
3.3 Buffer . 7
3.4 Ruggedized fibre . 8
3.5 Slotted core . 8
3.6 Tube . 8
3.7 Stranded tube . 8
3.8 Ribbon structure . 8
3.9 Strength and anti-buckling members. 8
3.10 Ripcord . 8
3.11 Sheath . 8
3.12 Sheath marking . 9
3.13 Identification . 9
3.14 Examples of cable constructions . 9
4 Tests . 9
4.1 General . 9
4.2 Dimensions . 9
4.3 Mechanical requirements . 9
4.3.1 Cable tensile performance . 9
4.3.2 Cable crush . 10
4.3.3 Cable impact . 10
4.3.4 Cable bending . 10
4.3.5 Cable repeated bending. 10
4.3.6 Cable bending under tension . 10
4.3.7 Cable bending at low temperature . 11
4.3.8 Cable flexing . 11
4.3.9 Cable torsion . 11
4.3.10 Cable kink . 11
4.4 Environmental requirements – Temperature cycling. 11
4.5 Transmission requirements. 12
4.6 Fire performance . 12
Annex A (informative) Examples of cable constructions . 13
Annex B (informative) Family specification for multi-fibre optical cables – Blank detail
specification and minimum requirements . 17
Bibliography . 22

Figure A.1 – Example of cross-section of a 12 fibre cable . 13
Figure A.2 – Example of cross-section of a 36 fibre cable . 13
Figure A.3 – Example of cross-section of a 6 fibre break-out cable . 14
Figure A.4 – Example of cross-section of a 24 fibre break-out cable . 14
Figure A.5 – Example of cross-section of a slotted core type indoor cable with 4 fibre
ribbons . 15

60794-2-20 © IEC:2013 – 3 –
Figure A.6 – Example of cross-section of an SZ (reverse oscillating lay) slotted core
type indoor cable with 2 fibre ribbons . 15
Figure A.7 – Example of cross-section of an SZ (reverse oscillating lay) slotted core
type indoor cable with 4 fibre bundles . 16
Figure A.8 – Example of multi-fibre unitube cable . 16
Figure A.9 – Example of multi-fibre cable . 16

Table 1 – Dimensions of buffered fibres . 8
Table 2 – Sample temperature cycling values . 12
Table B.1 – Cable description (1 of 2) . 17
Table B.2 – Cable element . 18
Table B.3 – Cable construction . 19
Table B.4 – Installation and operating conditions . 20
Table B.5 – Tests applicable . 20

– 4 – 60794-2-20 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 2-20: Indoor cables –
Family specification for multi-fibre optical cables

FOREWORD
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