IEC 60794-5-20:2014
(Main)Optical fibre cables - Part 5-20: Family specification - Outdoor microduct fibre units, microducts and protected microducts for installation by blowing
Optical fibre cables - Part 5-20: Family specification - Outdoor microduct fibre units, microducts and protected microducts for installation by blowing
IEC 60794-5-20:2014 is a family specification that covers outdoor microduct fibre units and corresponding microducts and protected microducts for installation by blowing. The protected microducts are intended for duct, directly buried or lashed applications. Microduct fibre units differ from microduct optical fibre cables (see IEC 60794-5-10) in that they provide less protection to the fibres that they contain. Specifically, microduct fibre units rely on the structure of the microduct, protected microduct or appropriate housing to support installation and to provide additional mechanical protection for the optical fibre over the lifetime of the product. Systems built with components covered by this standard are subject to the requirements of sectional specification IEC 60794-5 where applicable.
Câbles à fibres optiques - Partie 5-20: Spécification de famille - Eléments fibres en microconduit extérieur, microconduits et microconduits protégés pour installation par soufflage
IEC 60794-5-20:2014 est une spécification de famille qui couvre les éléments fibres en microconduit extérieur, ainsi que les microconduits et microconduits protégés correspondants pour installation par soufflage. Les microconduits protégés sont destinés à des applications de conduits, d'enfouissement direct ou de câbles lacés. Les éléments fibres en microconduit se différencient des câbles à fibres optiques en microconduit (voir l'IEC 60794-5-10) par une protection moindre des fibres contenues. De manière spécifique, les éléments fibres en microconduit reposent sur la structure du microconduit, du microconduit protégé ou du logement approprié pour supporter leur installation et pour fournir une protection mécanique supplémentaire à la fibre optique pendant la durée de vie du produit. Les systèmes intégrant des éléments couverts par la présente norme sont soumis aux exigences de la spécification intermédiaire IEC 60794-5, le cas échéant.
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IEC 60794-5-20 ®
Edition 1.0 2014-02
INTERNATIONAL
STANDARD
colour
inside
Optical fibre cables –
Part 5-20: Family specification – Outdoor microduct fibre units, microducts and
protected microducts for installation by blowing
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
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International Standards for all electrical, electronic and related technologies.
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IEC 60794-5-20 ®
Edition 1.0 2014-02
INTERNATIONAL
STANDARD
colour
inside
Optical fibre cables –
Part 5-20: Family specification – Outdoor microduct fibre units, microducts and
protected microducts for installation by blowing
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
V
ICS 33.180.01, 33.180.10 ISBN 978-2-8322-1420-6
– 2 – 60794-5-20 © IEC:2014(E)
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Symbols . 7
4 General requirements . 8
4.1 Construction . 8
4.1.1 General . 8
4.1.2 Microduct fibre units . 9
4.1.3 Microducts . 9
4.1.4 Protected microducts . 9
4.1.5 Microduct fittings . 9
4.1.6 Microduct hardware . 10
4.2 Optical fibres . 10
4.3 Installation performance tests . 10
4.3.1 Installation conditions . 10
4.3.2 Tests applicable . 11
4.3.3 Mechanical and environmental tests . 11
5 Microduct fibre unit . 11
5.1 Tests applicable . 11
5.2 Family requirements and test conditions for microduct fibre unit tests . 12
5.3 Tensile performance . 12
5.4 Crush . 12
5.5 Repeated bending . 13
5.6 Torsion . 13
5.7 Kink . 13
5.8 Bend . 13
5.9 Temperature cycling . 13
5.10 Ageing . 14
5.11 Water immersion . 14
5.12 Buffer removal . 14
6 Microduct . 14
6.1 Tests applicable . 14
6.2 Tensile performance . 15
6.3 Crush . 15
6.4 Impact . 16
6.5 Repeated bending . 16
6.6 Torsion . 16
6.7 Kink . 16
6.8 Bend . 16
6.9 Microduct route verification test . 17
6.10 Microduct pressure withstand . 17
6.11 Ageing . 17
7 Protected microducts . 17
7.1 Tests applicable . 17
7.2 Tensile performance . 18
7.3 Crush . 18
60794-5-20 © IEC:2014(E) – 3 –
7.4 Impact . 19
7.5 Repeated bending . 19
7.6 Kink . 19
7.7 Bend . 19
7.8 Microduct route verification test . 19
7.9 Microduct pressure withstand . 20
7.10 Ageing . 20
Annex A (informative) Examples of microduct fibre units, microducts, and protected
microducts . 21
Annex B (informative) Product descriptions (blank detail specification and minimum
requirements) . 22
Annex C (normative) Product constructions . 25
Annex D (normative) Transmission requirements . 28
D.1 Attenuation of cabled fibre . 28
D.2 Fibre bandwidth requirements . 29
Annex E (normative) IEC 60794-1-21 Method Exx – Microduct inner clearance test . 30
E.1 Object . 30
E.2 General . 30
E.3 Sample . 30
E.4 Test equipment . 30
E.5 Procedure . 30
E.6 Requirements . 30
E.7 Details to be recorded . 31
Figure A.1 – Protected microducts, tight package . 21
Figure A.2 – Microduct fibre units . 21
Table 1 – Tests applicable for installation performance . 11
Table 2 – Tests applicable for mechanical and environmental performance of
microduct fibre unit . 11
Table 3 – Tests applicable for mechanical and environmental performance of microduct . 15
Table 4 – Tests applicable for mechanical and environmental performance of
protected microduct . 18
Table B.1 – Microduct fibre unit description . 22
Table B.2 – Microduct description . 23
Table B.3 – Protected microduct description . 24
Table C.1 – Typical microduct fibre unit construction . 25
Table C.2 – Microduct construction . 26
Table C.3 – Protected microduct construction . 27
Table D.1 – Multimode maximum cable attenuation coefficient (dB/km) . 28
Table D.2 – Single-mode maximum cable attenuation coefficient (dB/km) – Premises
cabling applications . 28
Table D.3 – Single-mode maximum cable attenuation coefficient (dB/km) – All other
applications . 29
Table D.4 – Minimum multimode fibre bandwidth (MHz×km) . 29
– 4 – 60794-5-20 © IEC:2014(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Pa
...
IEC 60794-5-20 ®
Edition 1.0 2014-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 5-20: Family specification – Outdoor microduct fibre units, microducts and
protected microducts for installation by blowing
Câbles à fibres optiques –
Partie 5-20: Spécification de famille – Eléments fibres en microconduit extérieur,
microconduits et microconduits protégés pour installation par soufflage
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 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, please contact the address below or
your local IEC member National Committee for further information.
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
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CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.
IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and
CISPR.
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IEC 60794-5-20 ®
Edition 1.0 2014-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 5-20: Family specification – Outdoor microduct fibre units, microducts and
protected microducts for installation by blowing
Câbles à fibres optiques –
Partie 5-20: Spécification de famille – Eléments fibres en microconduit extérieur,
microconduits et microconduits protégés pour installation par soufflage
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.01; 33.180.10 ISBN 978-2-8322-4959-8
– 2 – IEC 60794-5-20:2014 © IEC 2014
CONTENTS
CONTENTS . 2
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Symbols . 7
4 General requirements . 8
4.1 Construction . 8
4.1.1 General . 8
4.1.2 Microduct fibre units . 9
4.1.3 Microducts . 9
4.1.4 Protected microducts . 9
4.1.5 Microduct fittings . 9
4.1.6 Microduct hardware . 10
4.2 Optical fibres . 10
4.3 Installation performance tests . 10
4.3.1 Installation conditions . 10
4.3.2 Tests applicable . 11
4.3.3 Mechanical and environmental tests . 11
5 Microduct fibre unit . 11
5.1 Tests applicable . 11
5.2 Family requirements and test conditions for microduct fibre unit tests . 12
5.3 Tensile performance . 12
5.4 Crush . 12
5.5 Repeated bending . 13
5.6 Torsion . 13
5.7 Kink . 13
5.8 Bend . 13
5.9 Temperature cycling . 13
5.10 Ageing . 14
5.11 Water immersion . 14
5.12 Buffer removal . 14
6 Microduct . 14
6.1 Tests applicable . 14
6.2 Tensile performance . 15
6.3 Crush . 15
6.4 Impact . 16
6.5 Repeated bending . 16
6.6 Torsion . 16
6.7 Kink . 16
6.8 Bend . 16
6.9 Microduct route verification test . 17
6.10 Microduct pressure withstand . 17
6.11 Ageing . 17
7 Protected microducts . 17
7.1 Tests applicable . 17
7.2 Tensile performance . 18
7.3 Crush . 18
7.4 Impact . 19
7.5 Repeated bending . 19
7.6 Kink . 19
7.7 Bend . 19
7.8 Microduct route verification test . 19
7.9 Microduct pressure withstand . 20
7.10 Ageing . 20
Annex A (informative) Examples of microduct fibre units, microducts, and protected
microducts . 21
Annex B (informative) Product descriptions (blank detail specification and minimum
requirements) . 22
Annex C (normative) Product constructions . 25
Annex D (normative) Transmission requirements . 28
D.1 Attenuation of cabled fibre . 28
D.2 Fibre bandwidth requirements . 29
Annex E (normative) IEC 60794-1-21 Method Exx – Micr
...
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