SIST EN 60794-2-50:2008

Optical fibre cables -- Part 2-50: Indoor cables - Family specification for simplex and duplex cables for use in terminated cable assemblies

This part of IEC 60794 is a family specification that covers requirements for simplex and duplex optical fibre cables for use in terminated cable assemblies or for termination with optical fibre passive components.

Lichtwellenleiterkabel - Teil 2-50: LWL-Innenkabel - Familienspezifikation für Simplex- und Duplexkabel für den Einsatz als Patchkabel

Câbles à fibres optiques - Partie 2-50: Câbles intérieurs - Spécification de famille pour les câbles simplex et duplex utilisés dans les ensembles de câbles équipés

PE

Optični kabli - 2-50. del: Optični kabli za zaprte prostore - Skupinska specifikacija za simpleksne in dupleksne kable za zaključene kabelske sestave (IEC 60794-2-50:2008)

General Information

• Status: Withdrawn
• Publication Date: 20-Jul-2008
• Withdrawal Date: 26-Feb-2023
• ICS: 33.180.10 - Fibres and cables
• Technical Committee: MOC - Mobile Communications
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 23-Feb-2023
• Due Date: 18-Mar-2023
• Completion Date: 27-Feb-2023
• Ref Project: EN 60794-2-50:2008 - Optical fibre cables - Part 2-50: Indoor cables - Family specification for simplex and duplex cables for use in terminated cable assemblies

Relations

• Replaced By: SIST EN IEC 60794-2-50:2020 - Optical fibre cables - Part 2-50: Indoor cables - Family specification for simplex and duplex cables for use in terminated cable assemblies (IEC 60794-2-50:2020)
• Effective Date: 07-Jun-2022
• Revised: SIST EN IEC 60794-2-50:2020 - Optical fibre cables - Part 2-50: Indoor cables - Family specification for simplex and duplex cables for use in terminated cable assemblies (IEC 60794-2-50:2020)
• Effective Date: 21-Jun-2016

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60794-2-50:2008
01-september-2008
2SWLþQLNDEOLGHO2SWLþQLNDEOL]D]DSUWHSURVWRUH6NXSLQVNDVSHFLILNDFLMD
]DVLPSOHNVQHLQGXSOHNVQHNDEOH]D]DNOMXþHQHNDEHOVNHVHVWDYH,(&

Optical fibre cables - Part 2-50: Indoor optical fibre cables - Family specification for
simplex and duplex cables for use in terminated cable assemblies (IEC 60794-2-
50:2008)
Lichtwellenleiterkabel - Teil 2-50: LWL-Innenkabel - Familienspezifikation für Simplex-
und Duplexkabel für den Einsatz als Patchkabel (IEC 60794-2-50:2008)
Câbles à fibres optiques - Partie 2-50: Câbles intérieurs - Spécification de famille pour
les câbles simplex et duplex utilisés dans les ensembles de câbles équipés (CEI 60794-
2-50:2008)
Ta slovenski standard je istoveten z: EN 60794-2-50:2008
ICS:
33.180.10 2SWLþQDYODNQDLQNDEOL Fibres and cables
SIST EN 60794-2-50:2008 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60794-2-50:2008

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SIST EN 60794-2-50:2008

EUROPEAN STANDARD
EN 60794-2-50

NORME EUROPÉENNE
June 2008
EUROPÄISCHE NORM

ICS 33.180.10


English version


Optical fibre cables -
Part 2-50: Indoor cables -
Family specification for simplex and duplex cables
for use in terminated cable assemblies
(IEC 60794-2-50:2008)


Câbles à fibres optiques -  Lichtwellenleiterkabel -
Partie 2-50: Câbles intérieurs - Teil 2-50: LWL-Innenkabel -
Spécification de famille pour Familienspezifikation
les câbles simplex et duplex utilisés für Simplex- und Duplexkabel
dans les ensembles de câbles équipés für den Einsatz als Patchkabel
(CEI 60794-2-50:2008) (IEC 60794-2-50:2008)




This European Standard was approved by CENELEC on 2008-06-01. 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, Bulgaria, 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


© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60794-2-50:2008 E

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SIST EN 60794-2-50:2008
EN 60794-2-50:2008 - 2 -
Foreword
The text of document 86A/1204/FDIS, future edition 1 of IEC 60794-2-50, 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 60794-2-50 on 2008-06-01.
This standard is to be used in conjunction with EN 60794-1-1, EN 60794-1-2 and EN 60794-2.
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) 2009-03-01
– latest date by which the national standards conflicting
(dow) 2011-06-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60794-2-50:2008 was approved by CENELEC as a European
Standard without any modification.
__________

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SIST EN 60794-2-50:2008
- 3 - EN 60794-2-50:2008
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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.

NOTE 2 Where a standard cited below belongs to the EN 50000 series, the European Standard applies instead of the relevant
International Standard.

Publication Year Title EN/HD Year

1) 2)
IEC 60068-2-14 - Environmental testing - EN 60068-2-14 1999
Part 2: Tests - Test N: Change of temperature


1)
IEC 60189-1 - Low-frequency cables and wires with PVC - -
insulation and PVC sheath -
Part 1: General test and measuring methods


1) 2)
IEC 60793-1-1 - Optical fibres - EN 60793-1-1 2008
Part 1-1: Measurement methods and test
procedures - General and guidance


1) 2)
IEC 60793-1-20 - Optical fibres - EN 60793-1-20 2002
Part 1-20: Measurement methods and test
procedures - Fibre geometry


1) 2)
IEC 60793-1-21 - Optical fibres - EN 60793-1-21 2002
Part 1-21: Measurement methods and test
procedures - Coating geometry


1) 2)
IEC 60793-1-40 - Optical fibres - EN 60793-1-40 2003
(mod) Part 1-40: Measurement methods and test
procedures - Attenuation


1) 2)
IEC 60793-1-46 - Optical fibres - EN 60793-1-46 2002
Part 1-46: Measurement methods and test
procedures - Monitoring of changes in optical
transmittance


1) 2)
IEC 60793-2-10 - Optical fibres - EN 60793-2-10 2007
Part 2-10: Product specifications - Sectional
specification for category A1 multimode fibres


1) 3)
IEC 60793-2-50 - Optical fibres - EN 60793-2-50 200X
Part 2-50: Product specifications - Sectional
specification for class B single-mode fibres


1) 2)
IEC 60794-1-1 - Optical fibre cables - EN 60794-1-1 2002
Part 1-1: Generic specification - General


1) 2)
IEC 60794-1-2 - Optical fibre cables - EN 60794-1-2 2003
Part 1-2: Generic specification - Basic optical
cable test procedures


1) 2)
IEC 60794-2 - Optical fibre cables - EN 60794-2 2003
Part 2: Indoor cables - Sectional specification



1)
Undated reference.
2)
Valid edition at date of issue.
3)
To be ratified.

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SIST EN 60794-2-50:2008
EN 60794-2-50:2008 - 4 -
Publication Year Title EN/HD Year

1) 2)
IEC 60811-1-3 - Insulating and sheathing materials of electric EN 60811-1-3 1995
and optical cables - Common test methods -
Part 1-3: General application - Methods for
determining the density - Water absorption
tests - Shrinkage test


1) 2)
IEC 60811-1-4 - Insulating and sheathing materials of electric EN 60811-1-4 1995
and optical cables - Common test methods -
Part 1-4: General application - Tests at low
temperature


1) 4) 1)
ISO/IEC 11801 - Information technology - Generic cabling for EN 50173-1 and -
5)
customer premises EN 50173-2




4)
The title of EN 50173-1 is: Information technology – Generic cabling systems – Part 1: General requirements.
5)
The title of EN 50173-2 is: Information technology – Generic cabling systems – Part 2: Office premises.

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SIST EN 60794-2-50:2008
IEC 60794-2-50
Edition 1.0 2008-04
INTERNATIONAL
STANDARD


Optical fibre cables –
Part 2-50: Indoor cables – Family specification for simplex and duplex cables
for use in terminated cable assemblies

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
V
ICS 33.180-10 ISBN 2-8318-9738-6

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SIST EN 60794-2-50:2008
– 2 – 60794-2-50 © IEC:2008(E)
CONTENTS
FOREWORD.4
1 Scope.6
2 Normative references .6
3 Terms and definitions .7
4 Construction .7
4.1 General .7
4.2 Optical fibres and primary coating .7
4.3 Buffer .7
4.4 Tube.8
4.5 Strength and anti-buckling members .8
4.6 Sheath .8
4.7 Sheath marking .8
4.8 Examples of cable constructions .8
5 Tests .8
5.1 Dimensions .9
5.2 Mechanical requirements.9
5.2.1 Tensile performance.9
5.2.2 Crush .9
5.2.3 Impact .10
5.2.4 Repeated bending .10
5.2.5 Bend.10
5.2.6 Torsion .11
5.2.7 Bend at low temperature.11
5.2.8 Kink.11
5.2.9 Sheath pull-off force .11
5.2.10 Buffered fibre movement in compression .12
5.3 Environmental requirements .12
5.3.1 Temperature cycling .12
5.3.2 Sheath shrinkage.12
5.4 Transmission requirements .13
5.5 Fire performance.13
Annex A (informative) Examples of some types of cable construction .14
Annex B (normative) METHOD E21 – Sheath pull-off force for optical fibre cable for
use in patch cords .17
Annex C (normative) METHOD F11 – Sheath shrinkage for optical fibre cable for use
in patchcords .22
Annex D (normative) METHOD E22 – Buffered fibre movement under compression in
optical fibre cables for use in patchcords .24
Annex E (normative) METHOD F12 – Temperature cycling for optical fibre cable for
use in patchcords .26
Annex F (normative) – Guidance on the selection of tests applicable to optical fibre
cables for use in patchcords .28
Bibliography.31

14
Figure A.1 – Simplex loose non-buffered fibre cable .
Figure A.2 – Simplex ruggedized fibre cable .14

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SIST EN 60794-2-50:2008
60794-2-50 © IEC:2008(E) – 3 –
Figure A.3 – Duplex loose non-buffered fibre cable.14
Figure A.4 – Duplex ruggedized fibre cable.15
Figure A.5 – Duplex ruggedized fibre zip cord.15
Figure A.6 – Duplex ruggedized flat cable.15
Figure A.7 – Duplex ruggedized round cable.16
Figure B.1 – Schematic of test arrangement .19
Figure B.2 – Example of pulling jig.20
Figure B.3 – Cable sample preparation .21
Figure D.1 – Test set up for fibre movement under compression.25

Table 1 – Dimensions of buffered fibres.8
Table 2 – Temperature cycling severities .12
Table F.1 – Cable test method summary.28
Table F.2 – Cable testing agreement .30

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SIST EN 60794-2-50:2008
– 4 – 60794-2-50 © IEC:2008(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

OPTICAL FIBRE CABLES –

Part 2-50: Indoor cables –
Family specification for simplex and duplex cables
for use in terminated cable assemblies


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 has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60794-2-50 has been prepared by subcommittee 86A: Fibres and
cables, of IEC technical committee 86: Fibre optics.
This standard cancels and replaces IEC/PAS 60794-2-50 published in 2004. This first edition
constitutes a technical revision.
This standard is to be used in conjunction with IEC 60794-1-1, IEC 60794-1-2 and
IEC 60794-2.

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SIST EN 60794-2-50:2008
60794-2-50 © IEC:2008(E) – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
86A/1204/FDIS 86A/1223/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of IEC 60794 series, under the general title Optical fibre cables, can be
found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication will be issued at a later date.

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SIST EN 60794-2-50:2008
– 6 – 60794-2-50 © IEC:2008(E)
OPTICAL FIBRE CABLES –

Part 2-50: Indoor cables –
Family specification for simplex and duplex cables
for use in terminated cable assemblies



1 Scope
This part of IEC 60794 is a family specification that covers requirements for simplex and
duplex optical fibre cables for use in terminated cable assemblies or for termination with
optical fibre passive components.
2 Normative references
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.
They complete the normative references already listed in the generic specification
(IEC 60794-1-1and IEC 60794-1-2) or in the sectional specification (IEC 60794-2 series).
IEC 60068-2-14, Environmental testing – Part 2: Tests. Test N: Change of temperature
IEC 60189-1, Low-frequency cables and wires with PVC insulation and PVC sheath – Part 1:
General test and measuring methods
IEC 60793-1-1, Optical fibres – Part 1-1: Measurement methods and test procedures –
General and guidance
IEC 60793-1-20, Optical fibres – Part 1-20: Measurement methods and test procedures –
Fibre geometry
IEC 60793-1-21, Optical fibres – Part 1-21: Measurement methods and test procedures –
Coating geometry
IEC 60793-1-40, Optical fibres – Part 1-40: Measurement methods and test procedures –
Attenuation
IEC 60793-1-46, Optical fibres – Part 1-46: Measurement methods and test procedures –
Monitoring of changes in optical transmittance
IEC 60793-2-10, Optical fibres – Part 2-10: Product specifications – Sectional specification for
category A1 multimode fibres
IEC 60793-2-50, Optical fibres – Part 2-50: Product specifications – Sectional specification for
class B single-mode fibres
IEC 60794-1-1, Optical fibre cables – Part 1-1: Generic specification – General
IEC 60794-1-2, Optical fibre cables – Part 1-2: Generic specification – Basic optical cable test
procedures

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SIST EN 60794-2-50:2008
60794-2-50 © IEC:2008(E) – 7 –
IEC 60794-2, Optical fibre cables – Part 2: Indoor cables – Sectional specification
IEC 60811-1-3, Common test methods for insulating and sheathing materials of electric and
optical cables – Part 1-3: General application – Methods for determining the density – Water
absorption tests – Shrinkage test
IEC 60811-1-4, Common test methods for insulating and sheathing materials of electric
cables – Part 1: Methods for general application – Section Four: Tests at low temperature
ISO/IEC 11801, Information technology – Generic cabling for customer premises
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
terminated cable assembly
short length of cable provisioned with a connector at both ends
NOTE Examples from ISO/IEC 11801 are:
Patchcords are used to establish connections on a patch panel. Typical length of the patchcord 1m to 10 m.
Work area cords are used to connect outlet to the terminal equipment. Typical length of the work area cords
according to this specification is between 1m and 35 m.
Equipment cords should fulfill the requirements of patchcords or work area cords depending on their application.
4 Construction
4.1 General
In addition to the constructional requirements in IEC 60794-2, the following considerations
apply to simplex and duplex indoor cables for use in terminated cable assemblies.
It is not the intention of this standard to specify the finished terminated cable assembly
complete with terminations.
The cable shall be designed and manufactured for an expected operating lifetime of 15 years.
The materials in the cable shall not present a health hazard within its intended use.
There shall be no fibre splice in a delivery length. It shall be possible to identify each
individual fibre throughout the length of the cable.
4.2 Optical fibres and primary coating
Multimode or single-mode optical fibres meeting the requirements of IEC 60793-2-10, type
A1a and A1b, and IEC 60793-2-50, type B, shall be used.
4.3 Buffer
If a tight or semi-tight (loosely applied) buffer is required, it shall consist of one or more layers
of inert material. Semi-tight tubes may be filled. Unless otherwise specified, the buffer shall
be removable in one operation over a length of 15 mm.
Buffer dimensions are shown in Table 1.

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SIST EN 60794-2-50:2008
– 8 – 60794-2-50 © IEC:2008(E)
Table 1 – Dimensions of buffered fibres
Nominal diameter (mm) 0,3 – 1,3
Tolerances (mm) ± 0,05

4.4 Tube
One or two primary coated or buffered fibres are packaged (loosely or not) in a tube
construction which may be filled. The tube may be reinforced with a composite wall.
If required the suitability of the tube shall be determined by an evaluation of its kink
resistance in accordance with IEC 60794-1-2, Method G7.
4.5 Strength and anti-buckling members
The cable shall be designed with sufficient strength members to meet the requirements of this
standard.
The strength and/or anti-buckling member may be either metallic or non-metallic and may be
located in the cable core and/or under the sheath and/or in the sheath.
4.6 Sheath
The cable shall have a uniform overall protective sheath. The cable diameter shall be
specified in the relevant detail specification (or product specification). Sheath removal is an
important feature of these cables. This is tested by the method E21 described in Annex B of
this standard.
4.7 Sheath marking
If required, the cable shall be marked as agreed between the customer and supplier. The
marking shall be resistant to abrasion.
4.8 Examples of cable constructions
Examples of some main types of cable construction are shown in Figures A.1 to A.7.
Other configurations are not excluded if they meet the mechanical, environmental,
transmission and termination requirements given in this standard.
5 Tests
Compliance with the specification requirements shall be verified by carrying out tests selected
from the following subclauses. It is not intended that all tests be carried out in all cases, and
Annex F provides guidance on the selection of tests. The tests to be applied and the
frequency of testing shall be agreed between the customer and supplier.
Some of the following tests can be performed on a short sample length of cable which is still
an integral part of a longer length, thus making it possible to detect permanent changes in
attenuation.

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SIST EN 60794-2-50:2008
60794-2-50 © IEC:2008(E) – 9 –
1
Single-mode cables shall be measured at 1 550 nm and 1 625 nm and multimode cables
shall be measured at 1 300 nm unless otherwise agreed. Measurements shall be carried out
according to IEC 60793-1-40.
If loops are used within a test to fix the ends of a cable, the diameter shall not be so small as
to cause excessive mode filtering in multimode fibre.
Unless otherwise specified, all tests shall be carried out at ambient temperature, as described
in IEC 60793-1-1, Clause 5.
5.1 Dimensions
The fibre dimensions and tolerances shall be checked in accordance with test method of
IEC 60793-1-20 or IEC 60793-1-21. The diameter of the buffer and of the cable, as well as the
thickness of the sheath, shall be measured in accordance with the methods of
IEC 60189-1.
5.2 Mechanical requirements
5.2.1 Tensile performance
Method: IEC 60794-1-2-E1A.
Diameter of chuck drums and transfer devices: not less than the minimum dynamic bending
diameter specified for the cable, at least 250 mm diameter.
Rate of transfer device: either 100 mm/min or 100 N/min.
Load: 100 N applied for 5 min for simplex cables, 200 N for 5 min for duplex cables.
Length of sample: sufficient to achieve the desired accuracy of measurement of attenuation
change and shall be agreed between the customer and the supplier.
Requirements: the maximum increase in attenuation during the test shall be specified in the
product specification, there shall be no change in attenuation after the test, and there shall be
no damage to the cable elements.
5.2.2 Crush
Method: IEC 60794-1-2-E3.
Force: 500 N.
Duration: 1 min.
Length between test locations: 500 mm.
Requirements: the maximum increase in attenuation during the test shall be specified in the
product specification, there shall be no change in attenuation after the test, and there shall be
no damage to the cable elements.
NOTE For cables having a non-circular cross section, the force should be applied in the direction of the minor
axis (perpendicular to the major axis).
___________
1
OM3 multimode cables should be tested at 850 nm and may be tested at 1300 in addition, all other
multimode cables should be tested at 1300 nm.

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SIST EN 60794-2-50:2008
– 10 – 60794-2-50 © IEC:2008(E)
5.2.3 Impact
Method: IEC 60794-1-2-E4.
Radius of striking surface: 12,5 mm.
Impact energy: 1,0 J.
Number of impacts: at least 3, each separated at least 500 mm.
Requirements: the maximum increase in attenuation after the test shall be specified in the
product specification and there shall be no fibre breakage or damage to the cable elements.
Any imprint of the striking surface on the cable sheath is not considered as a mechanical
damage.
NOTE For cables having a non-circular cross section
...