SIST EN IEC 60794-3-40:2022
(Main)Optical fibre cables - Part 3-40: Outdoor cables - Family specification for cables for storm and sanitary sewers (IEC 60794-3-40:2022)
Optical fibre cables - Part 3-40: Outdoor cables - Family specification for cables for storm and sanitary sewers (IEC 60794-3-40:2022)
This part of IEC 60794 is a family specification that covers sewer cables and conduits for installation by blowing and/ or pulling in man accessible and non-man accessible storm and sanitary sewers. Systems built with components covered by this standard are subject to the requirements of sectional specification IEC 60794-3.
Sewer cable and conduit constructions have to meet the different requirements of the sewer operating companies and/or associations regarding chemical, environmental, operational, cleaning and in general maintenance conditions.
Preferential applications, describing sewer cable characteristics versus methods of installation is reported in Annex A and Annex B for non-man accessible sewers.
Clause 5 describes characteristics of sewer cables and conduits for installation by blowing, pulling or other means in storm and sanitary sewers.
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 sewer cable and should be agreed between the customer and the supplier.
Lichtwellenleiterkabel - Teil 3-40: Außenkabel - Familienspezifikation für Kabel in Abwasserkanälen für die Verlegung durch Einblasen und/oder Einziehen in nicht zugänglichen Regenwasser- und Abwasserkanälen (IEC 60794-3-40:2022)
Câbles à fibres optiques - Partie 3-40: Câbles extérieurs - Spécification de famille pour les câbles destinés aux évacuations d’eaux sanitaires et pluviales (IEC 60794-3-40:2022)
IEC 60794-3-40:2022 s’applique aux câbles en égouts et aux conduits en vue de leur installation par soufflage et/ou tirage dans les évacuations d’eaux pluviales et sanitaires accessibles et non accessibles par l’homme. Les systèmes intégrant des éléments couverts par le présent document sont soumis aux exigences de la spécification intermédiaire IEC 60794-3. Il est nécessaire que les constructions des câbles en égouts et des conduits satisfassent aux différentes exigences d’ordre chimique, environnemental, fonctionnel et aux conditions générales en matière de nettoyage et de maintenance qui incombent aux entreprises et/ou aux organismes de maintenance des égouts. Les applications préférentielles, qui décrivent les caractéristiques des câbles en égouts en fonction des méthodes d’installation sont rapportées à l’Annexe A et l’Annexe B pour les égouts non accessibles par l’homme. L’Article 5 décrit les caractéristiques des câbles en égouts et des conduits en vue de leur installation par soufflage, tirage ou d’autres moyens dans des évacuations d’eaux pluviales et sanitaires. Les spécifications particulières peuvent être préparées sur la base de cette spécification de famille. Il importe d’interpréter les critères d’acceptation en conséquence. Le nombre de fibres soumises à l’essai est représentatif du câble en égouts et il fait l’objet d’un accord entre le client et le fournisseur. Cette seconde édition annule et remplace la première édition parue en 2008. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
a) le présent document suit la nouvelle structure relative aux spécifications de famille. Les symbols et abréviations ont été inclus à l’Article 3, et l’Article 4 s’intitule désormais Exigences générales, et est composé de 4.1 Fibres optiques, 4.2 Elément de câble et 4.3 Construction d’un câble à fibres optiques;
b) l’Annexe D a été supprimée étant donné qu’elle fait partie intégrante de l’IEC TR 62691;
c) le présent document a été simplifié en s’appuyant sur des références à l’IEC 60794-1-1, l’IEC 60793-2, l’IEC 60794-3 et la série IEC 60794-1-2x;
d) la tolérance en matière de déformation de la fibre pour les essais de traction a été mise à jour;
Optični kabli - 3-40. del: Kabli za zunanjo uporabo - Skupinska specifikacija za kable, namenjene za meteorne in sanitarne kanale (IEC 60794-3-40:2022)
Ta del standarda IEC 60794 je skupinska specifikacija, v kateri so zajeti kabli in vodi v kanalizacijskem sistemu, ki se namestijo z vpihovanjem in/ali vlečenjem v ljudem dostopnem in ljudem nedostopnem kanalizacijskem sistemu, namenjenem odvajanju meteornih in odpadnih voda. Za sisteme, zgrajene s komponentami, ki so zajete v tem standardu, veljajo zahteve področne specifikacije IEC 60794-3.
Konstrukcije kablov in vodov v kanalizacijskem sistemu morajo ustrezati različnim zahtevam podjetij in/ali združenj, ki upravljajo kanalizacijo, glede kemičnih, okoljskih, operativnih, čistilnih in splošnih pogojev vzdrževanja.
Prednostne vrste uporabe, ki opisujejo značilnosti kabla, nameščenega v kanalizacijski sistem, v primerjavi z načini namestitve, so navedene v dodatku A in dodatku B za kanalizacijo, nedostopno ljudem.
V točki 5 so opisane značilnosti kablov in vodov v kanalizacijskem sistemu, ki se namestijo z vpihovanjem, vlečenjem ali na drugačen način v kanalizacijskem sistemu, namenjenem odvajanju meteornih in odpadnih voda.
Podrobna specifikacija se lahko pripravi na osnovi te skupinske specifikacije.
Na parametre, navedene v tem standardu, lahko vpliva merilna negotovost, ki se pojavi zaradi merilnih napak ali napak umerjanja zaradi pomanjkanja ustreznih standardov.
Kriteriji sprejemljivosti se naj obravnavajo ob upoštevanju teh pomislekov. Število preskušenih vlaken je reprezentativno za kable v kanalizacijskem sistemu in naj bo predmet dogovora med stranko in dobaviteljem.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2022
Nadomešča:
SIST EN 60794-3-40:2009
Optični kabli - 3-40. del: Kabli za zunanjo uporabo - Skupinska specifikacija za
kable, namenjene za meteorne in sanitarne kanale (IEC 60794-3-40:2022)
Optical fibre cables - Part 3-40: Outdoor cables - Family specification for cables for storm
and sanitary sewers (IEC 60794-3-40:2022)
Lichtwellenleiterkabel - Teil 3-40: Außenkabel - Familienspezifikation für Kabel in
Abwasserkanälen für die Verlegung durch Einblasen und/oder Einziehen in nicht
zugänglichen Regenwasser- und Abwasserkanälen (IEC 60794-3-40:2022)
Câbles à fibres optiques - Partie 3-40: Câbles extérieurs - Spécification de famille pour
les câbles destinés aux évacuations d’eaux sanitaires et pluviales (IEC 60794-3-
40:2022)
Ta slovenski standard je istoveten z: EN IEC 60794-3-40:2022
ICS:
33.180.10 (Optična) vlakna in kabli Fibres and cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60794-3-40
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2022
ICS 33.180.10 Supersedes EN 60794-3-40:2008
English Version
Optical fibre cables - Part 3-40: Outdoor cables - Family
specification for cables for storm and sanitary sewers
(IEC 60794-3-40:2022)
Câbles à fibres optiques - Partie 3-40: Câbles extérieurs - Lichtwellenleiterkabel - Teil 3-40: Außenkabel -
Spécification de famille pour les câbles destinés aux Familienspezifikation für Kabel in Regen- und
évacuations d'eaux sanitaires et pluviales Abwasserkanälen
(IEC 60794-3-40:2022) (IEC 60794-3-40:2022)
This European Standard was approved by CENELEC on 2022-06-01. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60794-3-40:2022 E
European foreword
The text of document 86A/2189/FDIS, future edition 2 of IEC 60794-3-40, prepared by SC 86A "Fibres
and cables" of IEC/TC 86 "Fibre optics" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 60794-3-40:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-03-01
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-06-01
document have to be withdrawn
This document supersedes EN 60794-3-40:2008 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60794-3-40:2022 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 60794-3-10 NOTE Harmonized as EN 60794-3-10
IEC 60794-3-20 NOTE Harmonized as EN 60794-3-20
IEC 60794-4 NOTE Harmonized as EN IEC 60794-4
IEC 62305-1 NOTE Harmonized as EN 62305-1
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60793-2 - Optical fibres - Part 2: Product specifications - -
IEC 60794-1-1 - Optical fibre cables - Part 1-1: Generic EN 60794-1-1 -
specification - General
IEC 60794-1-2 - Optical fibre cables - Part 1-2: Generic EN IEC 60794-1-2 -
specification - Basic optical cable test
procedures - General guidance
IEC 60794-1-21 - Optical fibre cables - Part 1-21: Generic EN 60794-1-21 -
specification - Basic optical cable test
procedures - Mechanical tests methods
IEC 60794-1-22 - Optical fibre cables - Part 1-22: Generic EN IEC 60794-1-22 -
specification - Basic optical cable test
procedures - Environmental test methods
IEC 60794-1-23 - Optical fibre cables - Part 1-23: Generic EN IEC 60794-1-23 -
specification - Basic optical cable test
procedures - Cable element test methods
IEC 60794-1-215 - Optical fibre cables - Part 1-215: Generic EN IEC 60794-1-215 -
specification - Basic optical cable test
procedures - Environmental test methods -
Cable external freezing test, Method F15
IEC 60794-3 2014 Optical fibre cables - Part 3: Outdoor cables EN 60794-3 2015
- Sectional specification
IEC 60794-5 - Optical fibre cables - Part 5: Sectional EN 60794-5 -
specification - Microduct cabling for
installation by blowing
IEC 60794-5-10 - Optical fibre cables - Part 5-10: Family EN 60794-5-10 -
specification - Outdoor microduct optical
fibre cables, microducts and protected
microducts for installation by blowing
Publication Year Title EN/HD Year
IEC 60811-501 - Electric and optical fibre cables - Test EN 60811-501 -
methods for non-metallic materials - Part
501: Mechanical tests - Tests for
determining the mechanical properties of
insulating and sheathing compounds
IEC/TR 62362 2020 Selection of optical fibre cable specifications - -
relative to mechanical, ingress, climatic or
electromagnetic characteristics - Guidance
IEC 60794-3-40 ®
Edition 2.0 2022-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 3-40: Outdoor cables – Family specification for cables for storm and
sanitary sewers
Câbles à fibres optiques –
Partie 3-40: Câbles extérieurs – Spécification de famille pour les câbles destinés
aux évacuations d’eaux sanitaires et pluviales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.10 ISBN 978-2-8322-1101-0
– 2 – IEC 60794-3-40:2022 © IEC 2022
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, symbols and abbreviated terms . 7
4 General requirements . 7
4.1 Optical fibres . 7
4.2 Cable element . 7
4.3 Optical fibre cable and conduit construction . 7
4.3.1 General . 7
4.3.2 Conduits . 8
4.3.3 Sewer cables . 8
4.3.4 Rodent protection . 8
5 Details of family requirements and test conditions for optical fibre cable and
conduit . 8
5.1 Cable for installation within conduits (previously fixed to the sewer wall) . 8
5.2 Cable for direct installation into the sewer duct . 8
5.3 Conduit construction . 8
5.4 Operating conditions . 9
5.5 Mechanical and environmental tests . 9
5.5.1 Conduits . 9
5.5.2 Cable for installation within conduits (previously fixed to the sewer wall) . 12
5.5.3 Cables for direct installation into the sewer duct . 17
Annex A (informative) Blank detail specification – Sewer cables description . 24
A.1 Conduit description . 24
A.2 Cable for installation within conduits (previously fixed to the sewer wall) . 25
A.3 Cables for direct installation into the sewer duct . 26
Annex B (informative) Cables for non-man accessible sewers . 27
Annex C (informative) Examples of conduits and sewer cables . 28
C.1 Loose tube cables for installation within conduits . 28
C.1.1 Dielectric sewer cables . 28
C.1.2 Sewer cable installed within a conduit . 28
C.2 Loose tube cables for direct installation into the sewer duct . 29
C.2.1 Cables to be screwed to the sewer inner wall . 29
C.2.2 Cables for spanning between manholes, similarly to aerial cables . 30
C.2.3 Cables for laying on the ground of the sewer . 31
Bibliography . 32
Figure C.1 – Dielectric optical fibre sewer cable . 28
Figure C.2 – Dielectric optical fibre sewer cable . 28
Figure C.3 – Optical fibre sewer cable within a conduit . 29
Figure C.4 – Optical fibre sewer cable for direct installation – Peripheral strength
members . 29
Figure C.5 – Optical fibre sewer cable for direct installation – Steel wire armouring . 30
Figure C.6 – Optical fibre sewer cable for spanning – Peripheral strength members . 30
Figure C.7 – Optical fibre sewer cable for spanning – Steel wire armouring . 30
IEC 60794-3-40:2022 © IEC 2022 – 3 –
Figure C.8 – Optical fibre sewer cable for laying – Aluminium tape . 31
Figure C.9 – Optical fibre sewer cable for laying – Corrugated steel . 31
Figure C.10 – Optical fibre sewer cable for laying – 2-layer-steel wire armouring . 31
Table 1 – Conduit tests applicable . 9
Table 2 – Optical fibre cable – Tests applicable . 13
Table 3 – Tests applicable . 18
Table A.1 – Conduit description . 24
Table A.2 – Sewer optical fibre cable description – Within conduits . 25
Table A.3 – Sewer optical fibre cable description – Direct installation . 26
Table B.1 – Characteristics for optical fibre cables within non-man accessible sewers . 27
– 4 – IEC 60794-3-40:2022 © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 3-40: Outdoor cables –
Family specification for cables for storm and sanitary sewers
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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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.
IEC 60794-3-40 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical
committee 86: Fibre optics. It is an International Standard.
This second edition cancels and replaces the first edition published in 2008. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) this document follows the new structure for family specifications: symbols and abbreviations
were included in Clause 3, and Clause 4 became the General requirements with 4.1 Optical
fibres, 4.2 Cable element and 4.3 Optical fibre cable construction;
b) Annex D has been removed as it is part of IEC TR 62691;
c) this document has been streamlined by cross-referencing IEC 60794-1-1, IEC 60793-2,
IEC 60794-3 and the IEC 60794-1-2x series;
d) the fibre strain allowance for tensile tests was updated;
IEC 60794-3-40:2022 © IEC 2022 – 5 –
e) characteristics Table 5, Table 6, Table 7 were moved to the Annex A (informative).
The text of this International Standard is based on the following documents:
Draft Report on voting
86A/2189/FDIS 86A/2191/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts in 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 document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.
– 6 – IEC 60794-3-40:2022 © IEC 2022
OPTICAL FIBRE CABLES –
Part 3-40: Outdoor cables –
Family specification for cables for storm and sanitary sewers
1 Scope
This part of IEC 60794 is a family specification that covers sewer cables and conduits for
installation by blowing and/or pulling in man accessible and non-man accessible storm and
sanitary sewers. Systems built with components covered by this document are subject to the
requirements of sectional specification IEC 60794-3.
Sewer cable and conduit constructions need to meet the different requirements of the sewer
operating companies and/or associations regarding chemical, environmental, operational,
cleaning and in general maintenance conditions.
Preferential applications, describing sewer cable characteristics versus methods of installation
is reported in Annex A and Annex B for non-man accessible sewers.
escribes characteristics of sewer cables and conduits for installation by blowing,
Clause 5 d
pulling or other means in storm and sanitary sewers.
Detail specifications can be prepared on the basis of this family specification.
It is important that acceptance criteria are interpreted with respect to this consideration. The
number of fibres tested is representative of the sewer cable and is agreed between the customer
and the supplier.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 60793-2, Optical fibres – Part 2: Product specifications – General
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 – General guidance
IEC 60794-1-21, Optical fibre cables – Part 1-21: Generic specification – Basic optical cable
test procedures – Mechanical tests methods
IEC 60794-1-22, Optical fibre cables – Part 1-22: Generic specification – Basic optical cable
test procedures – Environmental tests methods
IEC 60794-1-23, Optical fibre cables – Part 1-23: Generic specification – Basic optical cable
test procedures – Cable element test methods
IEC 60794-1-215, Optical fibre cables – Part 1-215: Generic specification – Basic optical cable
test procedures – Environmental test methods – Cable external freezing test, Method F15
IEC 60794-3-40:2022 © IEC 2022 – 7 –
IEC 60794-3:2014, Optical fibre cables – Part 3: Outdoor cables – Sectional specification
IEC 60794-5, Optical fibre cables – Part 5: Sectional specification – Microduct cabling for
installation by blowing
IEC 60794-5-10, Optical fibre cables – Part 5-10: Family specification – Outdoor microduct
optical fibre cables, microducts and protected microducts for installation by blowing
IEC 60811-501, Electric and optical fibre cables – Test methods for non-metallic materials –
Part 501: Mechanical tests – Tests for determining the mechanical properties of insulating and
sheathing compounds
IEC TR 62362:2020, Selection of optical fibre cable specifications relative to mechanical,
ingress, climatic or electromagnetic characteristics – Guidance
3 Terms, definitions, symbols and abbreviated terms
For the purposes of this document, the terms, definitions, symbols and abbreviated terms given
in IEC 60794-1-1 apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
4 General requirements
4.1 Optical fibres
The optical fibre shall conform to the requirements of IEC 60793-2. The fibre type shall be
agreed between the customer and supplier. The cabled fibre shall conform to IEC 60794-3.
4.2 Cable element
The cable elements shall conform to IEC 60794-3.
4.3 Optical fibre cable and conduit construction
4.3.1 General
In addition to the constructional requirements of sectional specification IEC 60794-3, the
following considerations apply to the sewer cables and/or conduits.
The tests of this specification are intended to assess the performance of cables and conduits,
as manufactured and under agreed ageing and performance-limit tests. These tests are not
intended to define end-of-life performance. See IEC 60794-3:2014, 6.1.
The materials in the cable or conduit shall not present a health hazard within its intended use.
The clamping systems and accessories associated with cables and conduits of this document
are not specified herein. Such parts shall be agreed between the customer and the installer
depending on the installation technique.
Annex C shows examples of conduits and sewer cables.
– 8 – IEC 60794-3-40:2022 © IEC 2022
4.3.2 Conduits
If used, conduits shall conform to the installation and system design considerations of 4.3.3.
Conduits shall be able to resist pressure differences needed for installation by blowing and
outside pressure due to sewer cleaning operations. Conduits shall be circular and, if needed,
corrugated in cross-section throughout their length. The material shall withstand all possible
chemical attacks by the sewer liquid itself. Such chemicals hazards shall be agreed between
customer and supplier as well as the geometric dimensions, for example inner- and outer-
diameter, overall minimum wall thickness, of the conduit.
NOTE For instance stainless steel conduits have shown reliable performance.
4.3.3 Sewer cables
A sewer cable in accordance to this document should be suitable for installation in man
accessible storm and sanitary sewers and non-man accessible sewers and lateral sewer
systems, by installation methods as agreed between customer and supplier. Common
installation methods include
– blowing and/or pulling into a conduit, previously fixed to the sewer wall or, for laterals,
placed in between the lateral sewer wall and the in-liner system, and
– direct installation into the sewer duct, according to the following applications:
• drilling and screwing to the inner wall;
• spanning between manholes, etc. similarly to aerial cables;
• laying on the ground of the sewer.
The size and installation of the sewer cable shall be such that it does not restrict the flow of
sewer fluid or create obstacles to flow of any debris within the sewer pipe, as agreed between
customer and supplier.
Sewer cables installed without conduit into sewer systems shall be so constructed to withstand
chemical attacks by the sewer liquid. Such chemical hazards shall be agreed between customer
and supplier, using 5.5.3.3.9 as guidance.
4.3.4 Rodent protection
Rodent protection is generally needed but there is presently no standard test to measure the
level of rodent protection. Rodent protection can be provided by the cable or by the duct.
5 Details of family requirements and test conditions for optical fibre cable and
conduit
5.1 Cable for installation within conduits (previously fixed to the sewer wall)
The cable construction shall confirm to IEC 60794-3, IEC 60794-5 or IEC 60794-5-10, as
appropriate.
5.2 Cable for direct installation into the sewer duct
The cable construction shall confirm to IEC 60794-3.
5.3 Conduit construction
The conduit construction shall conform to the performance required for the sewer environment
as compatible with the performance intent of cables of IEC 60794-3 and of IEC 60794-5 and
IEC 60794-5-10 as applicable to microducts. Specific attributes to be considered in conduit
construction are:
IEC 60794-3-40:2022 © IEC 2022 – 9 –
• materials;
• conduit dimensions – inner and outer diameter;
• moisture barrier types (if used) – materials, metallic tapes, etc.;
• for corrugated conduit (metallic) – metal tape thickness, corrugation depth and pitch, overlap
requirements;
• for inner tubes (if used) – tube materials, tube dimensions.
The performance attributes shall be agreed between customer and supplier.
5.4 Operating conditions
The operating conditions of cables within sewers may be different from those of general cables
of IEC 60794-3. Different operating regimes, if applicable, shall be agreed between customer
and supplier. Consideration shall also be given to any operating regimes occurring when the
cable exits the sewer system. Typical considerations include
• temperatures of sewer fluids, especially high temperatures,
• normal operating temperature ranges that may be less severe than those usual for
IEC 60794-3 cables, especially the low temperature extreme,
• chemical exposure, as covered in 5.5.3.3.9, and
• other special conditions, as agreed between customer and supplier.
5.5 Mechanical and environmental tests
5.5.1 Conduits
5.5.1.1 Conduit tests (select applicable tests)
Tests listed in Table 1 are those relevant to IEC 60794-3, 60794-5 and 60794-5-10 as
applicable for conduits.
Table 1 – Conduit tests applicable
Characteristics IEC 60794-3:2014 Family Test methods Remarks
requirements
a
(IEC 60794-5-10:2014)
If external pressure
resistance is required,
IEC 60794-1-22,
IEC 60794-1-22,
Pressure withstand (6.1, Table 3) 5.5.1.2.2 method F10, may be
method F13
used, as agreed
between customer
and supplier.
Clause 9, Table 3 IEC 60794-1-21,
Tensile performance 5.5.1.2.3
(6.1, Table 3) method E1
Clause 9, Table 3 IEC 60794-1-21,
Crush 5.5.1.2.5
(6.1, Table 3) method E3A
Clause 9, Table 3 IEC 60794-1-21,
Impact 5.5.1.2.6
(6.1, Table 3) method E4
Clause 9, Table 3 IEC 60794-1-21,
Repeated bending 5.5.1.2.7
(6.1, Table 3) method E6
Clause 9, Table 3 IEC 60794-1-21,
Torsion 5.5.1.2.8
(6.1, Table 3) method E7
Clause 9, Table 3 IEC 60794-1-21,
Kink 5.5.1.2.4
(6.1, Table 3) method E10
Clause 9, Table 3 IEC 60794-1-21,
Bend 5.5.1.2.9
(Bend) (6.1, Table 3) method E11B
– 10 – IEC 60794-3-40:2022 © IEC 2022
Characteristics IEC 60794-3:2014 Family Test methods Remarks
requirements
a
(IEC 60794-5-10:2014)
IEC 60794-1-21,
Bending under
Clause 9, Table 3 5.5.1.2.10 method E18A,
tension
procedure 1
Clause 9, Table 3 IEC 60794-1-22,
Ageing 5.5.1.2.11
(6.1, Table 3) method F9
a
IEC 60794-3 or IEC 60794-5-10 as applicable.
5.5.1.2 Details of family requirements and test conditions for conduits
5.5.1.2.1 General
Tests shall be selected from those of Table 1 and the following hereinafter described.
5.5.1.2.2 Pressure withstand
a) Family requirements
Under visual examination, without magnification, there shall be no damage to the conduit.
b) Test conditions:
– Method: IEC 60794-1-22, method F13
– Apply an air pressure of 2,5 x the specified installation pressure at standard ambient
temperature, per IEC 60794-1-2, for 30 min.
– Apply an air pressure of 1,3 x the specified installation pressure and maintain at 40 ºC,
or other elevated temperature as specified, for 24 h.
5.5.1.2.3 Tensile performance
a) Family requirements
Under visual examination without magnification, there shall be no damage and the outer
diameter shall not change by more than 10 %.
b) Test conditions
Method: IEC 60794-1-21, method E1
Sample length under tension: ≥ 50 m, per method E1. Taking into account the measurement
accuracy and end effects, shorter lengths may be used by agreement between the customer
and the supplier.
Tensile load on sample: installation load (T ). Other loads may be applied in accordance
M
with particular user conditions.
Diameter of test pulleys: 1 m but not less than the minimum loaded bending diameter
specified for the conduit.
: equivalent to weight of 1 km of conduit.
T
M
5.5.1.2.4 Kink
a) Family requirements
Under visual examination, without magnification, there shall be no kink to the conduits.
b) Test conditions
Method: IEC 60794-1-21, method E10
Minimum diameter: 20 times the outer diameter of the conduit.
5.5.1.2.5 Crush
a) Family requirements
IEC 60794-3-40:2022 © IEC 2022 – 11 –
Under visual examination, without magnification, there shall be no damage to the conduit.
There shall be no residual deformation greater than 15 % of the conduit diameter, no
splitting or permanent damage after removing load. The imprint of the plates on the conduit
surface is not considered as mechanical damage.
b) Test conditions
Method: IEC 60794-1-21, method E3A
Sample length: 250 mm
Load (plate/plate):
– Un-armoured conduit: 1,5 kN
– Armoured conduit: 2,2 kN
Duration time: 60 s
Recovery time: 1 h
5.5.1.2.6 Impact
a) Family requirements
Under visual examination, without magnification, there shall be no splitting or permanent
damage to the conduit. There shall be no residual deformation greater than 15 % of the
conduit diameter. The imprint of the striking surface on the conduit is not considered
damage.
b) Test conditions
Method: in analogy of IEC 60794-1-21, method E4
Striking surface curvature radius: 300 mm minimum (flat hammer)
Impact energy:
– Un-armoured conduit: 10 J
– Armoured conduit: 20 J to 30 J, depending on particular user conditions
Recovery time: 1 h
Number of impacts: one in 3 different places spaced not less than 500 mm apart
5.5.1.2.7 Repeated bending
a) Family requirements
Under visual examination, without magnification, there shall be no splitting, collapse, or
other damage to the conduit sample. If the conduit has metallic armour, there shall be no
cracks greater than 5 mm in length. The conduit sample shall exhibit no reduction in outer
diameter greater than 15 %.
b) Test conditions
Method: IEC 60794-1-21, method E6
Bending diameter: 40 × OD
Load: Adequate to assure uniform contact with the mandrel
Number of cycles: 25
5.5.1.2.8 Torsion
a) Family requirements
Under visual examination, without magnification, there shall be no splitting or other damage
to the conduit sample. The conduit sample shall exhibit no reduction in outer diameter
greater than 15 %.
b) Test conditions
Method: IEC 60794-1-21, method E7
Maximum gauge length: 2 m
– 12 – IEC 60794-3-40:2022 © IEC 2022
5.5.1.2.9 Bend
a) Family requirements
Upon dissection, the outer and inner diameter of the conduit sample shall show, under visual
examination without magnification, no damage after the test. If the conduit has a metallic
armour, there shall be no cracks. The conduit sample shall exhibit no reduction in outer
diameter greater than 15 %.
b) Test conditions
Method: IEC 60794-1-21, method E11B
Diameter of mandrel: 40 × OD
Number of cycles: 3
5.5.1.2.10 Bending under tension
a) Family requirements
Upon dissection, the outer and inner diameter of the conduit sample shall show, under visual
examination without magnification, no damage after the test. If the conduit has a metallic
armour, there shall be no cracks. The conduit sample shall exhibit no reduction in outer
diameter greater than 15 %.
b) Test conditions
Method: IEC 60794-1-21, method E18A, procedure 1
Diameter of mandrel: 40 × OD or the minimum bending diameter of the conduit,
whichever is smaller
Tension: T , the rated installation tension
M
Bend angle: 90°
Test distance: 100 × OD
Number of cycles: 10
5.5.1.2.11 Ageing
a) Family requirements
After ageing, the following tests shall be applied.
• Under visual examination, without magnification, there shall be no splitting or other
damage to the conduit sample.
• Following the material tensile and elongation tests of IEC 60811-501, the conduit
material shall retain a minimum of 85 % of the before-ageing values.
• The conduit sample shall pass the bending test of 5.5.1.2.9.
b) Test conditions
Method: IEC 60794-1-22, method F9
Temperature: 85 °C
Duration: 168 h
5.5.2 Cable for installation within conduits (previously fixed to the sewer wall)
5.5.2.1 General
Cables installed in conduits within sewers follow the intent of IEC 60794-3. In some cases,
cable systems are designed to follow the intent of IEC 60794-5 and IEC 60794-5-10. In these
cases, refer to IEC 60794-5-10 for guidance on agreement between the manufacturer and
customer.
IEC 60794-3-40:2022 © IEC 2022 – 13 –
5.5.2.2 Tests applicable
Table 2 – Optical fibre cable – Tests applicable
Family
Characteristics IEC 60794-3:2014 Test methods Remarks
requirements
Tensile IEC 60794-1-21,
Clause 9, Table 3 5.5.2.3.2
performance method E1
IEC 60794-1-21,
Crush Clause 9, Table 3 5.5.2.3.6
method E3A
IEC 60794-1-21,
Impact Clause 9, Table 3 5.5.2.3.7
method E4
IEC 60794-1-21,
Repeated bending Clause 9, Table 3 5.5.2.3.3
method E6
IEC 60794-1-21,
Torsion Clause 9, Table 3 5.5.2.3.4
method E7
IEC 60794-1-21,
Kink Clause 9, Table 3 5.5.2.3.9
method E10
IEC 60794-1-21,
Bend Clause 9, Table 3 5.5.2.3.5
method E11A
IEC 60794-1-21,
Bending under
Clause 9, Table 3 5.5.2.3.10 method E18A,
tension
procedure 1
According to IEC 60794-1-21, Requirements will vary by
Blowing ---
DS method E24 duct, cable and installation.
IEC 60794-1-22,
Ageing Clause 9, Table 3 5.5.2.3.11
method F9
IEC 60794-1-22,
method F9
Coating adhesion
IEC 60794-1-23,
Clause 8, Table 2 5.5.2.3.12
stability
method G10A,
G10B or G10C, as
applicable.
Temperature IEC 60794-1-22,
Clause 9, Table 3 5.5.2.3.8
cycling method F1
IEC 60794-1-22,
Water penetration Clause 9, Table 3 5.5.2.3.13 method F5B or
F5C
IEC 60794-1-215, In the case where some
method F15A or part of a cable or cable in
Freezing --- 5.5.2.3.14
F15B conduit might freeze.
5.5.2.3 Details of family requirements and test conditions for sewer cable tests
5.5.2.3.1 General
Tests shall be selected from those of Table 2 and the following hereinafter described.
Attenuation measurements shall be made at room temperature except as specified in particular
tests.
Attenuation measurements shall be made at 1 550 nm for single-mode fibres and 1 300 nm for
multimode fibres, or at the operational wavelength specified by the customer.
For L-band operation, the measurements shall be measured at 1 625 nm and shall be a value
agreed between customer and supplier.
– 14 – IEC 60794-3-40:2022 © IEC 2022
5.5.2.3.2 Tensile performance
a) Family requirements
While the cable is under short-term tensile load (T , rated tensile load),
M
• the axial fibre strain shall be < 60 % of the fiber proof strain, and
• the attenuation shall be measured and recorded.
While the cable is under the long-term tensile load (T , residual load),
L
• the axial fiber strain shall be
– < 20 % of fiber proof test, for fiber proof tested to ≤ 1 % strain (e.g., 0,69 GPa, 0,2 %
absolute strain), and
– < 17 % of fiber proof test, for fiber proof tested to greater than 1 % to 2 % strain (e.g.,
0,69 GPa to 1,38 Gpa, 0,34 % absolute strain for 2 % proof tested fibre), and
NOTE For fibres proof tested at levels above 1 % strain, the safe long-term load will not scale linearly
with proof strain, so a lower percentage of the proof stain is applicable. There is no agreement for strain
limits for proof tests above 2 % strain.
• there shall be no increase in attenuation.
After the test, there shall be no change in attenuation.
Under visual examination, without magnification, there shall be no damage to the sheath or
to the cable elements.
b) Test conditions
Method: IEC 60794-1-21, method E1
Cable length under tension: not less than 50 m taking into account the measurement
accuracy and end effects; shorter lengths may be used by agreement between the customer
and the supplier.
Fibre length: finished cable length
Tensile load on cable: long term tensile load (T ) and installation load (T ). Other loads
L M
may be applied in accordance with particular user conditions.
Diameter of test pulleys: 1 m but not less than the minimum loaded bending diameter
specified for the cable
T : equivalent to weight of 1 km of sewer cable or 50 N whichever is
M
greater (blowing in duct)
T : greater or equivalent to 1,5 × weight of 1 km (pulling in duct)
M
T : 0,3 × T
L M
5.5.2.3.3 Repeated bending
a) Family requirements
Under visual examination, without magnification, there shall be no damage to the sheath
and to the cable elements.
b) Test conditions
Method: IEC 60794-1-21, method E6
Bending radius: 20 d
Load: adequate to assure uniform contact with the mandrel
Number of cycles: 25
5.5.2.3.4 Torsion
a) Family requirements
Under visual examination, without magnification, there shall be no damage to the sheath or
to the cable elements.
IEC 60794-3-40:2022 © IEC 2022 – 15 –
The variation on attenuation for each fibre shall be less than, or equal to, 0,10 dB for single-
mode fibre.
There shall be no change in attenuation after the test.
b) Test conditions
Method: IEC 60794-1-21, method E7
5.5.2.3.5 Bend
a) Family requirements
There shall be no change in attenuation after the test at room temperature.
The change in attenuation after the test, when tested at –30 °C, if required, shall be ≤ 0,1 dB
for single-mode fibre.
b) Test conditions
Method: IEC 60794-1-21, method E11
Diameter of mandrel: 20 d or the minimum bend diameter of the cable, whichever is
greater.
For cable incorporating a non-metallic rod and/or metallic
armouring, bending shall be limited to a value from 20 d to 80 d
Number of turns/helix: 4
Number of cycles: 3
5.5.2.3.6 Crush
a) Family requirements
Immediately after removal of load, there shall be no increase in attenuation.
Under visual examination, there shall be no damage to the sheath or to the cable elements
after removing load.
The imprint of the plate on the sheath is not considered mechanical damage.
b) Test conditions
Method: IEC 60794-1-21, method E3A
Load: 500 N
Duration of load: 1 min
5.5.2.3.7 Impact
a) Family requirements
Under visual examination, without magnification, there shall be no damage to the sheath or
to the cable elements. The imprint of the hammer on the sheath is not considered as
mechanical damage.
There shall be no change in attenuation after the test.
b) Test conditions:
Method: IEC 60794-1-21, method E4
Striking surface curvature radius: 300 mm minimum (flat hammer)
Impact energy: 1 J
Alternative energies may be used as agreed between customer
and user.
Number of impacts: 1 in 3 different places spaced not less than 500 mm apart
5.5.2.3.8 Temperature cycling
a) Family requirements
or T , if specified.
During the last cycle, there shall be no change in attenuation at T
A1 B1
SIST EN IE
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