EN 60794-3-21:2006

SLOVENSKI SIST EN 60794-3-21:2006

STANDARD
oct 2006
Optični kabli – 3-21. del: Kabli za zunanjo montažo – Podrobna specifikacija
za optične samonosne nadzemne telekomunikacijske kable za okablenje
prostorov (IEC 60794-3-21:2005)
Optical fibre cables – Part 3-21: Outdoor cables – Detailed specification for optical
self-supporting aerial telecommunication cables for use in premises cabling (IEC
60794-3-21:2005)
ICS 33.180.10 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD
EN 60794-3-21
NORME EUROPÉENNE
May 2006
EUROPÄISCHE NORM
ICS 33.180.10
English version
Optical fibre cables
Part 3-21: Outdoor cables -
Detailed specification for optical self-supporting aerial
telecommunication cables for use in premises cabling
(IEC 60794-3-21:2005)
Câbles à fibres optiques Lichtwellenleiterkabel
Partie 3-21: Câbles extérieurs - Teil 3-21: LWL-Außenkabel -
Spécification particulière pour les câbles Bauartspezifikation für selbsttragende
optiques de télécommunication aériens LWL-Fernmelde-Luftkabel für
autoporteurs utilisés dans le câblage anwendungsneutrale Standortverkabelung
de locaux (IEC 60794-3-21:2005)
(CEI 60794-3-21:2005)
This European Standard was approved by CENELEC on 2005-12-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60794-3-21:2006 E
Foreword
The text of document 86A/999/FDIS, future edition 1 of IEC 60794-3-21, prepared by SC 86A, Fibres and
cables, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was approved
by CENELEC as EN 60794-3-21 on 2005-12-01.
This standard shall be used in conjunction with EN 60794-1-1:2002, EN 60794-1-2:2003, EN 60794-3:2002
and EN 60794-3-20:2002.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2006-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-12-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60794-3-21:2005 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 60794-3-21:2006
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
1)
IEC 60793-2-10 2002 Optical fibres EN 60793-2-10 2002
Part 2-10: Product specifications -
Sectional specification for category A1
multimode fibres
IEC 60793-2-50 2004 Part 2-50: Product specifications - EN 60793-2-50 2004
Sectional specification for class B single-
mode fibres
IEC 60794-1-1 2001 Optical fibre cables EN 60794-1-1 2002
Part 1-1: Generic specification - General

IEC 60974-1-2 2003 Part 1-2: Generic specification - Basic EN 60974-1-2 2003
optical cable test procedures
IEC 60794-3 2001 Part 3: Sectional specification - Outdoor EN 60794-3 2002
cables
IEC 60794-3-20 2002 Part 3-20: Outdoor cables - Family EN 60794-3-20 2002
specification for optical self-supporting
aerial telecommunication cables

1)
EN 60793-2-10 is superseded by EN 60793-2-10:2004, which is based on IEC 60793-2-10:2004.

NORME CEI
INTERNATIONALE
IEC
60794-3-21
INTERNATIONAL
Première édition
STANDARD
First edition
2005-06
Câbles à fibres optiques –
Partie 3-21:
Câbles extérieurs –
Spécification particulière pour les câbles
optiques de télécommunication aériens
autoporteurs utilisés dans le câblage de locaux

Optical fibre cables –
Part 3-21:
Outdoor cables –
Detailed specification for optical self-
supporting aerial telecommunication cables
for use in premises cabling
 IEC 2005 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
H
PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

60794-3-21  IEC:2005 – 3 –
CONTENTS
FOREWORD.5

1 Scope.9
2 Normative references .9
3 General requirements .9
4 Particular requirements .11
4.1 Environmental requirements .11
4.1.1 Temperature cycling .11
4.2 Transmission requirements .11
4.2.1 Attenuation of cabled fibre.11
4.2.2 Fibre bandwidth requirements.13

Bibliography.15

Table 1 – Multimode maximum cable attenuation coefficient (dB/km) .11
Table 2 – Single-mode maximum cable attenuation coefficient (dB/km) .13
Table 3 – Minimum multimode fibre bandwidth (MHz⋅km).13

60794-3-21  IEC:2005 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 3-21: Outdoor cables –
Detailed specification for optical self-supporting aerial
telecommunication cables for use in premises cabling

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee
...