SIST EN 60794-3-50:2009

Optical fibre cables - Part 3-50: Outdoor cables - Family specification for gas pipe cables and subducts for installation by blowing and/or pulling/dragging in gas pipes (IEC 60794-3-50:2008)

This part of IEC 60794 is a family specification that covers gas pipe cables and subducts for installation by blowing and/or pulling/dragging in high pressure gas pipes (400 mbar to 4 bar). Systems built with components covered by this standard are subject to the requirements of sectional specification IEC 60794-3. Gas pipe cable and subduct constructions have to meet the different requirements of the gascompanies and/or associations regarding chemical, environmental, operational interactions and in general maintenance conditions. I/O-ports for the inlet and outlet of the gas pipe cables and/or subducts are housing the sealing system assuring the absolute gas tightness preventing any gas leakage due to the installation of the gas pipe cables into the gas pipes. A table of preferential applications, describing gas pipe cable characteristics versus methods of installation is reported in Annex A for high pressure gas pipe cables. Clause 4 describes a blank detail specification for gas pipe cables and subducts for
installation by blowing and/or pulling/dragging in high pressure gas pipes. It incorporates some minimum requirements.
Detail specifications may be prepared on the basis of this family specification. The parameters specified in this standard may be affected by measurement uncertainty
arising either from measurement errors or calibration errors due to lack of suitable standards. Acceptance criteria should be interpreted with respect to this consideration.
The number of fibres tested is representative of the gas pipe cable and should be agreed between the customer and the supplier.

Lichtwellenleiterkabel - Teil 3-50: Außenkabel - Familienspezifikation für Kabel in Gasleitungen und Schächten für die Verlegung durch Einblasen und/oder Einschieben/Einziehen in Gasleitungen (IEC 60794-3-50:2008)

Câbles à fibres optiques - Partie 3-50: Câbles extérieurs - Spécification de famille relative aux câbles et sous-conduits cheminant dans les gazoducs destinés à être installés par soufflage et/ou tirage/appareillage trainant, dans les gazoducs (CEI 60794-3-50:2008)

Optični kabli - 3-50. del: Kabli za zunanjo uporabo - Skupinska specifikacija za kable v plinskih ceveh in podkanalih za montažo z vpihavanjem oziroma vlečenjem/potezanjem v plinske cevi (IEC 60794-3-50:2008)

General Information

• Status: Withdrawn
• Publication Date: 23-Dec-2008
• Withdrawal Date: 24-Apr-2023
• ICS: 33.180.10 - Fibres and cables
• Technical Committee: MOC - Mobile Communications
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 21-Apr-2023
• Due Date: 14-May-2023
• Completion Date: 25-Apr-2023
• Ref Project: EN 60794-3-50:2008 - Optical fibre cables - Part 3-50: Outdoor cables - Family specification for gas pipe cables and subducts for installation by blowing and/or pulling/dragging in gas pipes

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60794-3-50:2009
01-februar-2009
2SWLþQLNDEOLGHO.DEOL]D]XQDQMRXSRUDER6NXSLQVNDVSHFLILNDFLMD]D
NDEOHYSOLQVNLKFHYHKLQSRGNDQDOLK]DPRQWDåR]YSLKDYDQMHPR]LURPD
YOHþHQMHPSRWH]DQMHPYSOLQVNHFHYL,(&
Optical fibre cables - Part 3-50: Outdoor cables - Family specification for gas pipe cables
and subducts for installation by blowing and/or pulling/dragging in gas pipes (IEC 60794-
3-50:2008)
Lichtwellenleiterkabel - Teil 3-50: Außenkabel - Familienspezifikation für Kabel in
Gasleitungen und Schächten für die Verlegung durch Einblasen und/oder
Einschieben/Einziehen in Gasleitungen (IEC 60794-3-50:2008)
Câbles à fibres optiques - Partie 3-50: Câbles extérieurs - Spécification de famille
relative aux câbles et sous-conduits cheminant dans les gazoducs destinés à être
installés par soufflage et/ou tirage/appareillage trainant, dans les gazoducs (CEI 60794-3
-50:2008)
Ta slovenski standard je istoveten z: EN 60794-3-50:2008
ICS:
33.180.10 2SWLþQDYODNQDLQNDEOL Fibres and cables
SIST EN 60794-3-50:2009 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN 60794-3-50:2009

---------------------- Page: 2 ----------------------

SIST EN 60794-3-50:2009

EUROPEAN STANDARD
EN 60794-3-50

NORME EUROPÉENNE
December 2008
EUROPÄISCHE NORM

ICS 33.180.10


English version


Optical fibre cables -
Part 3-50: Outdoor cables -
Family specification for gas pipe cables and subducts
for installation by blowing and/or pulling/dragging in gas pipes
(IEC 60794-3-50:2008)


Câbles à fibres optiques -  Lichtwellenleiterkabel -
Partie 3-50: Câbles extérieurs - Teil 3-50: Außenkabel -
Spécification de famille Familienspezifikation
relative aux câbles et sous-conduits für Kabel in Gasleitungen und Schächten
cheminant dans les gazoducs für die Verlegung durch Einblasen
destinés à être installés par soufflage und/oder Einschieben/Einziehen
et/ou tirage/appareillage trainant, in Gasleitungen
dans les gazoducs (IEC 60794-3-50:2008)
(CEI 60794-3-50:2008)



This European Standard was approved by CENELEC on 2008-11-01. 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 60794-3-50:2008 E

---------------------- Page: 3 ----------------------

SIST EN 60794-3-50:2009
EN 60794-3-50:2008 - 2 -
Foreword
The text of document 86A/1231/FDIS, future edition 1 of IEC 60794-3-50, 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 60794-3-50 on 2008-11-01.
This standard is to be used in conjunction with EN 60794-1-1, EN 60794-1-2 and EN 60794-3.
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) 2009-08-01
– latest date by which the national standards conflicting
(dow) 2011-11-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60794-3-50:2008 was approved by CENELEC as a European
Standard without any modification.
__________

---------------------- Page: 4 ----------------------

SIST EN 60794-3-50:2009
- 3 - EN 60794-3-50:2008
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.

Publication Year Title EN/HD Year

IEC 60304 1982 Standard colours for insulation for HD 402 S2 1984
low-frequency cables and wires


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


1) 2)
IEC 60793-1-44 - Optical fibres - EN 60793-1-44 2002
Part 1-44: Measurement methods and test
procedures - Cut-off wavelength


1) 2)
IEC 60793-2 - Optical fibres - EN 60793-2 2008
Part 2: Product specifications - General


1) 2)
IEC 60793-2-50 - Optical fibres - EN 60793-2-50 2008
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 60794-3 - Optical fibre cables - EN 60794-3 2002
Part 3: Sectional specification - Outdoor
cables


1) 2)
IEC 60794-3-10 - Optical fibre cables - EN 60794-3-10 2002
(mod) Part 3-10: Outdoor cables - Family
specification for duct and directly buried
optical telecommunication cables


2)
IEC 60811-1-1 1993 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.

---------------------- Page: 5 ----------------------

SIST EN 60794-3-50:2009
EN 60794-3-50:2008 - 4 -
Publication Year Title EN/HD Year

2)
IEC 60811-5-1 1990 Insulating and sheathing materials of electric EN 60811-5-1 1999
(mod) and optical cables - Common test methods -
Part 5-1: Methods specific to filling
compounds - Drop point - Separation of oil -
Lower temperature brittleness - Total acid
number - Absence of corrosive components -
Permittivity at 23 °C - D.C. resistivity at 23 °C
and 100 °C

---------------------- Page: 6 ----------------------

SIST EN 60794-3-50:2009
IEC 60794-3-50
Edition 1.0 2008-10
INTERNATIONAL
STANDARD


Optical fibre cables –
Part 3-50: Outdoor cables – Family specification for gas pipe cables and
subducts for installation by blowing and/or pulling/dragging in gas pipes


INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
V
ICS 33.180.10 ISBN 2-8318-1002-5
® Registered trademark of the International Electrotechnical Commission

---------------------- Page: 7 ----------------------

SIST EN 60794-3-50:2009
– 2 – 60794-3-50 © IEC:2008(E)
CONTENTS
FOREWORD.4
1 Scope.6
2 Normative references .6
3 Symbols and abbreviations.7
4 Family specification for gas pipe cables and subducts for installation by blowing
and/or pulling/dragging in gas pipes (blank detail specification and minimum
requirements) .8
4.1 Construction.8
4.1.1 General .8
4.1.2 Subducts .8
4.1.3 Gas pipe cables.8
4.2 Optical fibres.9
4.2.1 Single-mode dispersion unshifted (B1.1) optical fibre .9
4.2.2 Single-mode dispersion shifted (B2) optical fibre .9
4.2.3 Single-mode non-zero dispersion (B4) optical fibre.10
4.2.4 Single-mode (B6) optical fibre .10
4.2.5 Multimode fibres .10
4.3 High pressure gas pipe cable constructions.11
4.3.1 Cable for installation within subducts (previously installed within the
high pressure gas pipe) .11
4.3.2 Cable for direct installation within the high pressure gas pipe .12
4.3.3 Subduct construction .13
4.4 Installation and operating conditions .13
4.4.1 Tests applicable to cables/cable elements .13
4.4.2 Installation conditions .13
4.5 Mechanical and environmental tests.14
4.5.1 Subducts .14
4.5.2 Cable for installation within subducts (previously installed into the
gas pipe) .16
4.5.3 Cables for direct installation into the high pressure gas pipe .20
Annex A (informative) Blank detail specification.24
Annex B (informative) OF cables for high pressure gas pipes .27
Annex C (informative) Examples of subducts and high pressure gas pipe cables .28
Annex D (informative) Example for installation schemes of cables in high pressure gas
pipes (fibre-in-gas).30

Figure C.1 – Example of constructions of cables for installation in subducts within gas
pipes .28
Figure C.2 – Example of constructions of cables for direct installation into high
pressure gas pipes .29
Figure D.1 – Picture of an I/O-port .30
Figure D.2 – Schematic drawing of Figure D.1: installation of OF cable within the gas
30
pipe .
Figure D.3 – Schematic drawing of the installation of I/O-ports on high pressure PE
gas pipes .31

---------------------- Page: 8 ----------------------

SIST EN 60794-3-50:2009
60794-3-50 © IEC:2008(E) – 3 –
Table 1 – Single-mode dispersion unshifted (B1.1) optical fibre .9
Table 2 – Single-mode dispersion shifted (B2) optical fibre .9
Table 3 – Single-mode non-zero dispersion (B4) optical fibre.10
Table 4 – Single-mode (B6) optical fibre .10
Table 5 – Characteristics – Cable for installation within subducts .11
Table 6 – Characteristics – Cable for direct installation within the high pressure gas
pipe .12
Table 7 – Characteristics – Subduct construction.13
Table 8 – Tests applicable to cables/cable elements.13
Table 9 – Tests applicable to subducts .14
Table 10 – Tests applicable for OF cables within subducts .16
Table 11 – Tests applicable to direct installed OF cables.20
Table A.1 – Cables for subduct installation into the gas pipe.24
Table A.2 – Cables for direct installation into the gas pipe .25
Table A.3 – Subduct description .26
Table B.1 – OF cables for high pressure gas pipes .27

---------------------- Page: 9 ----------------------

SIST EN 60794-3-50:2009
– 4 – 60794-3-50 © IEC:2008(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_____________

OPTICAL FIBRE CABLES –

Part 3-50: Outdoor cables –
Family specification for gas pipe cables
and subducts for installation by blowing and/or
pulling/dragging in gas pipes


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 60794-3-50 has been prepared by subcommittee 86A: Fibres and
cables, of IEC technical committee 86: Fibre optics.
This standard is to be used in conjunction with IEC 60794-1-1 and IEC 60794-1-2, and
IEC 60794-3.
The text of this standard is based on the following documents:
FDIS Report on voting
86A/1231/FDIS 86A/1242/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.

---------------------- Page: 10 ----------------------

SIST EN 60794-3-50:2009
60794-3-50 © IEC:2008(E) – 5 –
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 may be issued at a later date.

---------------------- Page: 11 ----------------------

SIST EN 60794-3-50:2009
– 6 – 60794-3-50 © IEC:2008(E)
OPTICAL FIBRE CABLES –

Part 3-50: Outdoor cables –
Family specification for gas pipe cables
and subducts for installation by blowing and/or
pulling/dragging in gas pipes



1 Scope
This part of IEC 60794 is a family specification that covers gas pipe cables and subducts for
installation by blowing and/or pulling/dragging in high pressure gas pipes (400 mbar to 4 bar).
Systems built with components covered by this standard are subject to the requirements of
sectional specification IEC 60794-3.
Gas pipe cable and subduct constructions have to meet the different requirements of the gas-
companies and/or associations regarding chemical, environmental, operational interactions
and in general maintenance conditions.
I/O-ports for the inlet and outlet of the gas pipe cables and/or subducts are housing the
sealing system assuring the absolute gas tightness preventing any gas leakage due to the
installation of the gas pipe cables into the gas pipes.
A table of preferential applications, describing gas pipe cable characteristics versus methods
of installation is reported in Annex A for high pressure gas pipe cables.
Clause 4 describes a blank detail specification for gas pipe cables and subducts for
installation by blowing and/or pulling/dragging in high pressure gas pipes. It incorporates
some minimum requirements.
Detail specifications may be prepared on the basis of this family specification.
The parameters specified in this standard may be affected by measurement uncertainty
arising either from measurement errors or calibration errors due to lack of suitable standards.
Acceptance criteria should be interpreted with respect to this consideration.
The number of fibres tested is representative of the gas pipe cable and should be agreed
between the customer and the supplier.
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 60304, 1982: Standard colours for insulation for low-frequency cables and wires
IEC 60793-1-20, Optical fibres – Part 1-20: Measurement methods and test procedures –
Fibre geometry
IEC 60793-1-40, Optical fibres – Part 1-40: Measurement methods and test procedures –
Attenuation

---------------------- Page: 12 ----------------------

SIST EN 60794-3-50:2009
60794-3-50 © IEC:2008(E) – 7 –
IEC 60793-1-44, Optical fibres – Part 1-44: Measurement methods and test procedures – Cut-
off wavelength
IEC 60793-2, Optical fibres – Part 2: Product specifications – General
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
IEC 60794-3, Optical fibre cables – Part 3: Sectional specification – Outdoor cables
IEC 60794-3-10, Optical fibre cables – Part 3-10: Outdoor cables – Family specification for
duct and directly buried optical telecommunication cables
IEC 60811-1-1, 1993: 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 60811-5-1,1990 Insulating and sheathing materials of electric and optical cables –
Common test methods – Part 5-1: Methods specific to filling compounds – Drop-point –
Separation of oil – Lower temperature brittleness – Total acid number – Absence of corrosive
components – Permittivity at 23 °C – DC resistivity at 23 °C and 100 °C
3 Symbols and abbreviations
For the purposes of this document, the following symbols and abbreviations apply.
λ cabled fibre cut-off wavelength
CC
d nominal outer diameter of the gas pipe optical fibre cable
d nominal outer diameter of the subduct
c
DS detail specification
T threshold tensile load below which no attenuation and/or fibre strain increase should
O
occur in the tensile performance test
T the acceptable amount of short-term tensile load that can be applied to the cable
M
without permanent degradation of the characteristics of the fibres in the tensile
performance test
T temperature cycling test low-temperature limit according to IEC 60794-1-2, method
A1
F1
T temperature cycling test low-temperature limit according to IEC 60794-1-2, method
A2
F1
T temperature cycling test high-temperature limit according to IEC 60794-1-2, method
B1
F1
T temperature cycling test high-temperature limit according to IEC 60794-1-2, method
B2
F1
t temperature cycling dwell time
1
n x d a value times cable outer diameter used for bends, mandrels, etc.
PE polyethylene
I/O-port input/ output port for guiding the cable into and out of the gas pipe

---------------------- Page: 13 ----------------------

SIST EN 60794-3-50:2009
– 8 – 60794-3-50 © IEC:2008(E)
APL aluminium/polyethylene laminate
SPL steel/polyethylene laminate
4 Family specification for gas pipe cables and subducts for installation by
blowing and/or pulling/dragging in gas pipes (blank detail specification and
minimum requirements)
4.1 Construction
4.1.1 General
In addition to the constructional requirements of sectional specification IEC 60794-3, the
following considerations apply to the gas pipe cables and/or subducts.
The gas pipe cables and/or subducts shall be designed and manufactured for an expected
operating lifetime of at least 10 years. It shall be possible to install or remove the cable in or
from the gas pipe throughout the operational lifetime. The materials in the gas pipe cable
and/or as well as accessories including fixing elements, i.e. I/O-ports and subducts shall not
present a health hazard within its intended use.
4.1.2 Subducts
In case of use, the subduct with outer nominal diameters ranging from 10 mm to 100 mm shall
be able to resist pressure differences needed for installation by blowing and able to withstand
the gas pressure within the gas pipe. They shall be circular and the outer and inner surfaces
of low coefficient of friction. The material shall withstand all possible chemical attacks by the
natural gas itself. Inner- and outer-diameter and overall minimum wall thickness shall be
specified.
4.1.3 Gas pipe cables
A gas pipe cable in accordance to this specification should be suitable for installation in high
pressure gas pipes by the following installation methods, also applicable for the access gas
pipe network:
– blowing and /or pulling into a subduct, previously installed into the high pressure gas pipe
between two I/O-ports;
– direct installation into the gas pipe in between two adjacent I/O-ports.
The attenuation of the installed cable at the operational wavelength(s) shall not exceed values
agreed between the customer and the supplier.
There shall be no fibre splice in a delivery length unless otherwise agreed by the customer
and the supplier.
It shall be possible to identify each individual fibre throughout the length of the gas pipe
cable.

---------------------- Page: 14 ----------------------

SIST EN 60794-3-50:2009
60794-3-50 © IEC:2008(E) – 9 –

4.2 Optical fibres
4.2.1 Single-mode dispersion unshifted (B1.1) optical fibre
Table 1 – Single-mode dispersion unshifted (B1.1) optical fibre
Characteristics IEC 60794-3 Family Test methods Remarks
Clause requirements
(9) /subclause (11) (12) (13)
(10)
Uncabled optical fibre 5 IEC 60793-2-50
Attenuation coefficient 5.2.1 According to DS IEC 60793-1-40,
(cabled fibres) method A, B or C
at 1 310 nm
≤ 0,40 dB/km
at 1 550 nm and
≤ 0,35 dB/km
1
at 1 625 nm . ≤ 0,40 dB/km
Attenuation discontinuities 5.2.2 IEC 60793-1-40,
≤ 0,10 dB
at 1 310 and 1 550 nm
method C
Cabled fibre cut-off 5.3 λ < λ operational IEC 60793-1-44,
CC
wavelength
method B
Fibre colouring 5.4 IEC 60304 Visual inspection
Outer diameter including 8.2.1.1 IEC 60793-2 IEC 60793-1-20,
colouring
method D

4.2.2 Single-mode dispersion shifted (B2) optical fibre
Table 2 – Single-mode dispersion shifted (B2) optical fibre
Characteristics IEC 60794-3 Family Test methods Remarks
Clause/ subclause requirements
(9) (10) (11) (12) (13)
Uncabled optical fibre 5.1 IEC 60793-2
Attenuation coefficient 5.2.1 According to DS IEC 60793-1-40,
(cabled fibres)  method A, B or C

at 1 550 nm 5.2.1 ≤ 0,35 dB/km


Attenuation discontinuities 5.2.2 IEC 60793-1-40,
≤ 0,10 dB/km
at 1 550 nm method C
Cabled fibre cut-off 5.3 λ < λ operational IEC 60793-1-44,
CC
wavelength method B
Fibre colouring 5.4 IEC 60304 Visual inspection
Outer diameter including 8.2.1.1 IEC 60793-2 IEC 60793-1-20,
colouring method D

___________
1
 Measurements at 1 625 nm are optional.

---------------------- Page: 15 ----------------------

SIST EN 60794-3-50:2009
– 10 – 60794-3-50 © IEC:2008(E)
4.2.3 Single-mode non-zero dispersion (B4) optical fibre
Table 3 – Single-mode non-zero dispersion (B4) optical fibre
Characteristics IEC 60794-3 Family Test methods Remarks
Clause/subclause requirements
(9) (10) (11) (12) (13)
Uncabled optical fibre 5.1 IEC 60793-2
Attenuation coefficient 5.2.1 According to DS IEC 60793-1-40,
(cabled fibres)  method A, B or C

at 1 550 nm 5.2.1 ≤ 0,35 dB/km
2
≤ 0,40 dB/km
at 1 625 nm



5.2.2 IEC 60793-1-40,
Attenuation discontinuities ≤ 0,10 dB/km
method C
at 1 550 nm
Cabled fibre cut-off 5.3 λ < λ IEC 60793-1-44,
CC
wavelength operational method B
Fibre colouring 5.4 IEC 60304 Visual inspection
Outer diameter including 8.2.1.1 IEC 60793-2 IEC 60793-1-20,
colouring method D
4.2.4 Single-mode (B6) optical fibre
Table 4 – Single-mode (B6) optical fibre
Characteristics IEC 60794-3 Family Test methods Remarks
Clause/subclause requirements
...