SIST EN 60794-2-42:2008

Optical fibre cables -- Part 2-42: Indoor optical fibre cables - Product specification for simplex and duplex cables with A4 fibres

This part of IEC 60794 covers simplex and duplex optical fibre cables containing A4 fibres for indoor use. The requirements of the sectional specification IEC 60794-2 are applicable to cables covered by this standard.

Lichtwellenleiterkabel - Teil 2-42: LWL-Innenkabel - Produktspezifikation für Simplex- und Duplexkabel mit Fasern der Kategorie A4

Câbles à fibres optiques - Partie 2-42 : Câbles intérieurs à fibres optiques - Spécification de produit pour les câbles simplex et duplex munis de fibres A4

La CEI 60794-2-42:2008 couvre les câbles à fibres optiques simplex et duplex contenant des fibres A4 pour utilisation à l'intérieur. Les exigences de la spécification intermédiaire CEI 60794-2 sont applicables aux câbles couverts par la présente norme.
Cette publication doit être lue conjointement avec la CEI 60794-1-1:2011, la CEI 60794-1-2:2003 et la CEI 60794-2:2002.

Optični kabli - 2-42. del: Optični kabli za notranjo uporabo - Specifikacija izdelka za simpleksne in dupleksne kable z vlakni A4 (IEC 60794-2-42:2008)

General Information

• Status: Published
• Publication Date: 20-Jul-2008
• ICS: 33.180.10 - Fibres and cables
• Technical Committee: iTEL - Communication cables
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jul-2008
• Due Date: 05-Sep-2008
• Completion Date: 21-Jul-2008
• Ref Project: EN 60794-2-42:2008 - Optical fibre cables - Part 2-42: Indoor optical fibre cables - Product specification for simplex and duplex cables with A4 fibres

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60794-2-42:2008
01-september-2008
2SWLþQLNDEOLGHO2SWLþQLNDEOL]DQRWUDQMRXSRUDER6SHFLILNDFLMDL]GHOND]D
VLPSOHNVQHLQGXSOHNVQHNDEOH]YODNQL$,(&
Optical fibre cables - Part 2-42: Indoor optical fibre cables - Product specification for
simplex and duplex cables with A4 fibres (IEC 60794-2-42:2008)
Lichtwellenleiterkabel - Teil 2-42: LWL-Innenkabel - Produktspezifikation für Simplex-
und Duplexkabel mit Fasern der Kategorie A4 (IEC 60794-2-42:2008)
Câbles à fibres optiques - Partie 2-42 : Câbles intérieurs à fibres optiques - Spécification
de produit pour les câbles simplex et duplex munis de fibres A4 (CEI 60794-2-42:2008)
Ta slovenski standard je istoveten z: EN 60794-2-42:2008
ICS:
33.180.10 2SWLþQDYODNQDLQNDEOL Fibres and cables
SIST EN 60794-2-42:2008 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60794-2-42:2008

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SIST EN 60794-2-42:2008

EUROPEAN STANDARD
EN 60794-2-42

NORME EUROPÉENNE
June 2008
EUROPÄISCHE NORM

ICS 33.180.10


English version


Optical fibre cables -
Part 2-42: Indoor optical fibre cables -
Product specification for simplex and duplex cables with A4 fibres
(IEC 60794-2-42:2008)


Câbles à fibres optiques -  Lichtwellenleiterkabel -
Partie 2-42: Câbles intérieurs Teil 2-42: LWL-Innenkabel -
à fibres optiques - Produktspezifikation für Simplex- und
Spécification de produit pour les câbles Duplexkabel mit Fasern der Kategorie A4
simplex et duplex munis de fibres A4 (IEC 60794-2-42:2008)
(CEI 60794-2-42:2008)




This European Standard was approved by CENELEC on 2008-05-01. 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 60794-2-42:2008 E

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SIST EN 60794-2-42:2008
EN 60794-2-42:2008 - 2 -
Foreword
The text of document 86A/1126/CDV, future edition 1 of IEC 60794-2-42, prepared by SC 86A, Fibres
and cables, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel Unique Acceptance
Procedure and was approved by CENELEC as EN 60794-2-42 on 2008-05-01.
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) 2009-02-01
– latest date by which the national standards conflicting
(dow) 2011-05-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60794-2-42:2008 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60793-1-40 NOTE  Harmonized as EN 60793-1-40:2003 (modified).
IEC 60793-1-41 NOTE  Harmonized as EN 60793-1-41:2003 (not modified).
IEC 60793-1-50 NOTE  Harmonized as EN 60793-1-50:2002 (not modified).
IEC 60793-1-51 NOTE  Harmonized as EN 60793-1-51:2002 (not modified).
IEC 60793-2-52 NOTE  Harmonized as EN 60793-1-52:2002 (not modified).
__________

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SIST EN 60794-2-42:2008
- 3 - EN 60794-2-42:2008
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 1 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)
IEC 60189-1 - Low-frequency cables and wires with PVC - -
insulation and PVC sheath -
Part 1: General test and measuring methods


1) 2)
IEC 60654-4 - Operating conditions for industrial-process EN 60654-4 1997
measurement and control equipment -
Part 4: Corrosive and erosive influences


1) 2)
IEC 60721-1 - Classification of environmental conditions - EN 60721-1 1995
Part 1: Environmental parameters and their
severities


1) 2)
IEC 60721-3-3 - Classification of environmental conditions - EN 60721-3-3 1995
Part 3: Classification of groups of
environmental parameters and
their severities -
Section 3: Stationary use at weather protected
locations


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 60793-2-40 - Optical fibres - EN 60793-2-40 2006
Part 2-40: Product specifications - Sectional
specification for category A4 multimode 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) 2)
IEC 60811-1-1 - Insulating and sheathing materials of electric EN 60811-1-1 1995
and optical cables - Common test methods -
Part 1-1: General application - Measurement
of thickness and overall dimensions - Tests for
determining the mechanical properties



1)
Undated reference.
2)
Valid edition at date of issue.

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SIST EN 60794-2-42:2008
EN 60794-2-42:2008 - 4 -
Publication Year Title EN/HD Year

3)
IEC 60811-1-4 1985 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)
IEC/TS 61000-2-5 - Electromagnetic compatibility (EMC) - - -
Part 2: Environment – Section 5: Classification
of electromagnetic environments -
Basic EMC publication


1) 2)
IEC 61000-6-2 - Electromagnetic compatibility (EMC) - EN 61000-6-2 2005
Part 6-2: Generic standards - Immunity for + corr. September 2005
industrial environments


IEC 61326 Series Electrical equipment for measurement, EN 61326 Series
control and laboratory use - EMC
requirements


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


1) 4) 1)
ISO/IEC 24702 - Information technology - Generic cabling - EN 50173-1 and -
6)
Industrial premises EN 50173-3




3)
EN 60811-1-4 includes A1:2001 to IEC 60811-1-4 + corr. May 1986.
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.
6)
The title of EN 50173-3 is: Information technology – Generic cabling systems – Part 3: Industrial premises.

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SIST EN 60794-2-42:2008
IEC 60794-2-42
Edition 1.0 2008-04
INTERNATIONAL
STANDARD


Optical fibre cables –
Part 2-42: Indoor optical fibre cables – Product specification for simplex and
duplex cables with A4 fibres

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
T
ICS 33.180.10 ISBN 2-8318-9679-7

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SIST EN 60794-2-42:2008
– 2 – 60794-2-42 © IEC:2008(E)
CONTENTS
FOREWORD.3
1 Scope.5
2 Normative references .5
3 Construction .6
3.1 General .6
3.2 Optical fibres.6
3.3 Buffer .6
3.4 Ruggedized fibre .6
3.5 Tube.6
3.6 Strength and anti-buckling members .7
3.7 Sheath .7
3.8 Sheath marking .7
3.9 Examples of cable constructions .7
4 Tests .7
4.1 General .7
4.2 Dimensions .7
4.3 Mechanical requirements.7
4.4 Environmental requirements – Temperature cycling .10
4.5 Transmission requirements .10
4.6 Fire performance.10
Annex A (informative) Examples of cable constructions .11
Annex B (informative) Blank Detail Specification (BDS) .14
Bibliography.24

Figure A.1 – Simplex loose non-buffered fibre cable .11
Figure A.2 – Simplex ruggedized fibre cable .11
Figure A.3 – Duplex loose non-buffered fibre cable.11
Figure A.4 – Duplex ruggedized fibre cable.12
Figure A.5 – Duplex ruggedized fibre zip cord.12
Figure A.6 – Duplex flat cable .12
Figure A.7 – Duplex round cable.13
Figure A.8 – Duplex flat cable .13

Table 1 – Temperature cycling.10

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SIST EN 60794-2-42:2008
60794-2-42 © IEC:2008(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________

OPTICAL FIBRE CABLES –

Part 2-42: Indoor optical fibre cables –
Product specification for simplex and duplex cables with A4 fibres


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 60794-2-42 has been prepared by sub-committee 86A: Fibres and
cables, of IEC technical committee 86: Fibre optics.
This standard is to be used in conjunction with IEC 60794-1-1, IEC 60794-1-2 and
IEC 60794-2.
The text of this standard is based on the following documents:
CDV Report on voting
86A/1126/CDV 86A/1155/RVC

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.

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SIST EN 60794-2-42:2008
– 4 – 60794-2-42 © IEC:2008(E)
A blank detail specification is provided in Annex B.
A list of all parts of the IEC 60794 series, published 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 may be issued at a later date.

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SIST EN 60794-2-42:2008
60794-2-42 © IEC:2008(E) – 5 –
OPTICAL FIBRE CABLES –

Part 2-42: Indoor optical fibre cables –
Product specification for simplex and duplex cables with A4 fibres



1 Scope
This part of IEC 60794 covers simplex and duplex optical fibre cables containing A4 fibres for
indoor use. The requirements of the sectional specification IEC 60794-2 are applicable to
cables covered by this standard.
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.
IEC 60189-1: Low-frequency cables and wires with PVC insulation and PVC sheath – Part 1:
General test and measuring methods
IEC 60654-4, Operating conditions for industrial-process measurement and control equipment
– Part 4: Corrosive and erosive influences
IEC 60721-1, Classification of environmental conditions – Part 1: Environmental parameters
and their severities
IEC 60721-3-3, Classification of environmental conditions – Part 3: Classification of groups of
environmental parameters and their severities – Section 3: Stationary use at weather
protected locations
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 60793-2-40, Optical fibres – Part 2-40: Product specifications – Sectional specification for
category A4 multimode 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
IEC 60794-2: Optical fibre cables – Part 2: Indoor cables – Sectional specification
IEC 60811-1-1, Common test methods for insulating and sheathing materials of electric
cables and optical cables – Part 1-1: Methods for general application – Measurement of
thickness and overall dimensions – Tests for determining the mechanical properties
IEC 60811-1-4:1985, Common test methods for insulating and sheathing materials of electric
cables – Part 1: Methods for general application – Section 4: Tests at low temperature

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SIST EN 60794-2-42:2008
– 6 – 60794-2-42 © IEC:2008(E)
IEC 61000-2-5, Electromagnetic compatibility (EMC) – Part 2: Environment – Section 5:
Classification of electromagnetic environments – Basic EMC publication
IEC 61000-6-2, Electromagnetic compatibility (EMC) – Part 6-2: Generic standards –
Immunity for industrial environments
IEC 61326 (all parts), Electrical equipment for measurement, control and laboratory use –
EMC
ISO/IEC 11801: Information technology – Generic cabling for customer premises
ISO/IEC 24702: Information technology – Generic cabling – Industrial premises
3 Construction
3.1 General
In addition to the constructional requirements in IEC 60794-2, the following considerations
apply to simplex and duplex indoor cables.
The cable shall be designed and manufactured for an expected operating lifetime of at least
15 years. In this context, the attenuation of the installed cable at the operational wavelength(s)
shall not exceed values agreed between customer and supplier. 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 unless otherwise agreed by customer and
supplier.
It shall be possible to identify each individual fibre throughout the length of the cable.
3.2 Optical fibres
Multimode category A4a through A4g optical fibres shall be used that meet the requirements
of IEC 60793-2-40.
3.3 Buffer
The buffer, if any, shall consist of one or more layers of inert material. For tight buffer, the
buffer shall be easily removable in one operation over a length of 15 mm to 25 mm,
depending on customer requirements. For semi-tight buffers, the buffer shall be easily
removable over a length of 0,2 m to 2,0 m.
3.4 Ruggedized fibre
Further protection can be provided to buffered fibres by surrounding one or two with non-
metallic strength members within a sheath of suitable material.
3.5 Tube
One or two identified primary coated or buffered fibres may be 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.

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SIST EN 60794-2-42:2008
60794-2-42 © IEC:2008(E) – 7 –
3.6 Strength and anti-buckling members
The cable shall be designed with sufficient strength members to meet installation and service
conditions thus enabling fibres not to be subjected to strain in excess of limits in 4.2.1.
The strength and/or anti-buckling member may be located in the cable core and/or under the
sheath and/or in the sheath.
3.7 Sheath
The cable shall have an overall protective sheath. The cable diameter shall be specified by
agreement between customer and supplier.
3.8 Sheath marking
If required, the cable shall be marked as agreed between the customer and supplier.
3.9 Examples of cable constructions
Examples of some main types of cable construction are shown in Figures A.1 to A.8. Other
configurations are not excluded if they meet the mechanical, environmental and transmission
requirements given in this specification.
4 Tests
4.1 General
Compliance with specification requirements shall be verified by carrying out tests selected
from the following subclauses. It is not intended that all tests shall be performed. The
frequency of testing shall be agreed between customer and supplier.
Unless otherwise specified, all tests shall be carried out at ambient temperature.
4.2 Dimensions
The fibre dimensions and tolerances shall be checked in accordance with test method
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.
4.3 Mechanical requirements
4.3.1 General
Some of the following tests can be performed on a short sample length of cable that is still an
integral part of a longer length. Thus it becomes possible to detect permanent changes in
attenuation. Launch conditions to measure changes in attenuation shall be in conformity with
IEC 60793-2-40.
4.3.2 Tensile performance
Method IEC 60794-1-2-E1A
Diameter of chuck drums and transfer devices: approximately 250 mm.
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.

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SIST EN 60794-2-42:2008
– 8 – 60794-2-42 © IEC:2008(E)
Length of sample: sufficient to achieve the desired accuracy of measurement of attenuation
change and shall be agreed between customer and supplier.
Requirements: change in attenuation less than 0,2 dB after the test and there shall be no
damage to the cable elements.
4.3.3 Crush
Method: IEC 60794-1-2-E3.
Force: 1 000 N.
Duration: 1 min.
Number of test locations: 3, at least 500 mm apart.
Requirements: change in attenuation shall not exceed 0,2 dB after the test. Under visual
examination, there shall be no damage to the cable elements.
NOTE In the case of flat cables the force should be applied on the flat sides of the cable.
4.3.4 Impact
Method: IEC 60794-1-2-E4.
Radius of striking surface: 12,5 mm.
Impact energy: 1J.
Number of impacts: at least 3, each separated at least 500 mm.
Requirements: change in attenuation shall not exceed 0,2 dB after the test. Under visual
examination without magnification there shall be no damage to the sheath and to the cable
elements. The imprint of the striking surface on the sheath is not considered mechanical
damage.
NOTE In the case of flat cables the force should be applied on the flat sides of the cable.
4.3.5 Bend
Method: IEC 60794-1-2-E11A
Mandrel diameter: 10 times cable diameter (for flat cables, the diameter is the minor
dimension).
Number of turns per helix: 6.
Number of cycles: 10.
Requirements: change in attenuation should be less than 0,2 dB after test. Under visual
examination, there shall be no damage to the sheath or cable element.
NOTE In the case of flat cables the force should be applied on the flat sides of the cable.
4.3.6 Repeated bending
Method: IEC 60794-1-2-E6.

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SIST EN 60794-2-42:2008
60794-2-42 © IEC:2008(E) – 9 –
Bending radius: 5 times cable diameter (for flat cables, the diameter is the minor dimension).
Number of cycles: 300.
Mass of weights: 2 kg.
Requirements: change in attenuation shall not exceed 0,2 dB after the test. Under visual
examination without magnification there shall be no damage to the sheath and to the cable
elements.
NOTE In the case of flat cables, the sample should be fixed to the apparatus so that bending is perpendicular to
the flat surface of the cable.
4.3.7 Bend at low temperature
Method: IEC 60794-1-2-E11A (see IEC 60811-1-4, Clause 8).
Bending radius: 10 times cable diameter (for flat cables, the diameter is the minor dimension).
Number of cycles: 2.
Test temperature: 0 °C, –10 °C or –15 °C depending on application and customer
requirements.
Number of turns per helix:according to Clause 8 of IEC 60811-1-4.
Requirements: in addition to the requirement of Clause 8 of IEC 60811-1-4, no fibre shall
break during the test.
4.3.8 Flexing
Method: IEC 60794-1-2-E8.
Number of cycles: 300.
Pulley diameter: 100 mm.
Mass of weights: 2 kg.
Requirement: no fibre breakage.
NOTE In the case of flat cables the force shall be applied on the flat sides of the cable.
4.3.9 Torsion
Method: IEC 60794-1-2-E7.
Number of cycles: 20.
Distance between fixed and rotating clamp: 250 mm.
Tension load: 20 N.
Requirements: no fibre breakage.

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SIST EN 60794-2-42:2008
– 10 – 60794-2-42 © IEC:2008(E)
4.3.10 Kink
Method: IEC 60794-1-2-E10.
Minimum loop diameter: 20 times cable diameter (for flat cables, the diameter is the minor
dimension).
Requirement: no kink shall occur and no fibre breakage.
4.4 Environmental requirements – Temperature cycling
Method: IEC 60794-1-2-F1.
Table 1 – Temperature cycling
Condition Low temperature High temperature
T T
A B
a) 0 °C +50 °C
b)
–5 °C +50 °C
c)
–20 °C +60 °C
d) –40 °C +60 °C
Condition a), b), c) or d) shall be selected depending on application and user
requirements, for example condition c) is appropriate for applications
supported by ISO/IEC 11801.

Period: t sufficient that the cable has reached, and stabilized to, the specified temperature.
1
Number of cycles: 2.
Length of sample: sufficient to achieve the desired accuracy of measurement of attenuation.
Requirements: maximum increase in attenuation to be agreed between customer and supplier.
4.5 Transmission requirements
The transmission requirements shall be in accordance with IEC 60793-2-40. Values for
bandwidth and attenuation requirements shall be as agreed between customer and supplier.
4.6 Fire performance
IEC/TR 62222 provides guidance and recommendations for the requirements and test
methods for the fire performance of communication cables when installed in buildings. The
recommendations relate to typical applications and installation pra
...