SIST EN IEC 60794-1-217:2024

Optical fibre cables - Part 1-217: Generic specification - Basic optical cable test procedures - Environmental test methods - Cable shrinkage (fibre protrusion), Method F17 (IEC 60794-1-217:2024)

IEC 60794-1-217:2024 series defines the test procedure to measure the permanent fibre protrusion compared to the cable elements and cable sheath due to thermal exposure of a cable. This document partially replaces IEC 60794‑1‑22:2017. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC 60794‑1‑22:2017:
a) added clarification in the objective that the purpose of this test procedure is to measure the permanent fibre protrusion of cables without rigid strength members;
b) replaced the reference to method F1 for the apparatus with a detailed description for the temperature chamber and temperature sensing device as done in IEC 60794-1-211;
c) added a measuring device in the subclause for apparatus;
d) added conditioning before cutting the cable sample as done in IEC 60794-1-211
e) added all required steps in the subclause for temperature cycling as well as the table for the minimum soak time and the figure for the cycle procedure, and removed the reference to IEC 60794-1-22, method F1;
f) improved the figures and added a figure for preparation of the cable sample;
g) added the informative Annex A for the test procedure recommended for cables with rigid strength members.

Lichtwellenleiterkabel - Teil 1-217: Fachgrundspezifikation - Grundlegende Prüfverfahren für optische Kabel - Umweltprüfverfahren - Kabelschrumpfung (Faserüberstand), Verfahren F17 (IEC 60794-1-217:2024)

Câbles à fibres optiques - Partie 1-217: Spécification générique - Procédures fondamentales d’essais des câbles optiques - Méthodes d’essais d’environnement - Rétraction de câble (excroissance de la fibre), méthode F17 (IEC 60794-1-217:2024)

IEC 60794-1-217:2024 définit la procédure d’essai pour mesurer l’excroissance permanente de la fibre par rapport aux éléments de câble et à la gaine de câble, due à l’effet thermique d’un câble. Le présent document remplace partiellement l’IEC 60794-1-22:2017. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’IEC 60794‑1-22:2017:
a) précision ajoutée dans l’objectif de cette procédure d’essai qui indique qu’elle vise à mesurer l’excroissance permanente de la fibre sans élément de renfort rigide;
b) remplacement de la référence à la méthode F1 pour l’appareillage par une description détaillée de l’enceinte thermostatique et du dispositif de détection de température, comme dans l’IEC 60794-1-211;
c) ajout d’un dispositif de mesure dans le paragraphe applicable à l’appareillage;
d) ajout du conditionnement avant de couper l’échantillon de câble, comme dans l’IEC 60794‑1-211
e) ajout de toutes les étapes exigées dans le paragraphe relatif au cycle de température, ainsi que de la durée d’exposition minimale et de la figure relative à la procédure de cycle, et suppression de la référence à l’IEC 60794-1-22, méthode F1;
f) amélioration des figures et ajout d’une figure pour la préparation de l’échantillon de câble;
g) ajout de l’Annexe A informative pour la procédure d’essai recommandée pour les câbles avec éléments de renfort rigides.

Optični kabli - 1-217. del: Splošna specifikacija - Osnovni preskusni postopki za optične kable - Okoljske preskusne metode - Krčenje kabla (izbočena vlakna), metoda F17 (IEC 60794-1-217:2024)

Skupina standardov IEC 60794-1-217:2024 določa preskusni postopek za merjenje trajne izbočenosti vlaken v primerjavi s kabelskimi elementi in plaščem zaradi izpostavljenosti kabla toploti. Dokument delno nadomešča standard IEC 60794‑1‑22:2017. Ta izdaja je tehnično popravljena izdaja. Ta izdaja v primerjavi s standardom IEC 60794-1-22:2017 vključuje naslednje pomembne tehnične spremembe:
a) v cilju je bilo dodano pojasnilo, da je namen tega preskusnega postopka merjenje trajne izbočenosti kabelskih vlaken brez togih elementov;
b) sklic na metodo F1 za naprave je bil zamenjan s podrobnim opisom temperaturne komore in naprave za zaznavanje temperature (kot v standardu IEC 60794-1-211);
c) v podtočki o napravah je bila dodana merilna naprava;
d) dodano je bilo kondicioniranje pred rezanjem vzorca kabla (kot v standardu IEC 60794-1-211);
e) v podtočko o temperaturnem cikliranju, preglednico o minimalnem času namakanja in sliko postopka cikliranja so bili dodani vsi zahtevani koraki ter odstranjen je bil sklic na standard IEC 60794-1-22, metoda F1;
f) slike so bile izboljšane in dodana je bila slika za pripravo vzorca kabla;
g) dodan je bil informativni dodatek A za preskusni postopek, priporočen za kable s togimi elementi.

General Information

• Status: Published
• Public Enquiry End Date: 12-Oct-2023
• Publication Date: 10-Jun-2024
• ICS: 33.180.10 - Fibres and cables
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 29-May-2024
• Due Date: 03-Aug-2024
• Completion Date: 11-Jun-2024
• Ref Project: EN IEC 60794-1-217:2024 - Optical fibre cables - Part 1-217: Generic specification - Basic optical cable test procedures - Environmental test methods - Cable shrinkage (fibre protrusion), Method F17

Relations

• Splited From: SIST EN IEC 60794-1-22:2018 - Optical fibre cables - Part 1-22: Generic specification - Basic optical cable test procedures - Environmental test methods (IEC 60794-1-22:2017)
• Effective Date: 01-Jul-2024

Overview

EN IEC 60794-1-217:2024 - Optical fibre cables, Part 1-217 - defines Method F17 for measuring permanent cable shrinkage expressed as fibre protrusion after thermal exposure. This CLC-adopted standard updates and partially replaces IEC 60794‑1‑22:2017 and harmonizes apparatus and procedures with other parts of the IEC 60794 series. It is intended to assess how thermal cycling affects fiber position relative to cable elements and the sheath, with special notes for cables both without and (informatively) with rigid strength members.

Key topics and requirements

• Objective: Measure permanent fibre protrusion (fibre protrusion compared to cable elements/sheath) caused by thermal exposure; clarified to target cables without rigid strength members.
• Scope of test method: Specifies sample preparation, conditioning, apparatus, measurement technique, temperature cycling sequence, and reporting requirements.
• Apparatus: Detailed description of the temperature chamber, temperature sensing device, and a measuring device for fibre protrusion (replacing an earlier generic apparatus reference).
• Procedure elements:
  • Conditioning of cable samples before cutting (aligned with IEC 60794-1-211 practices).
  • Preparation of cable ends and sample geometry.
  • Initial and final measurement steps to quantify permanent protrusion.
  • Defined temperature cycling steps, including minimum soak times and a cycle procedure (figures and table included in the standard).
• Reporting: Lists details to be specified and reported (sample description, apparatus, test cycle, measurements).
• Informative Annex A: Recommended test variations and guidance for cables that include rigid strength members.

Applications and who uses it

• Cable manufacturers use Method F17 during product development and quality control to ensure thermal stability of optical cables.
• Independent test laboratories apply the procedure to certify product compliance and generate traceable measurement reports.
• Network operators and system integrators reference the standard when specifying cable procurement criteria for environments with significant temperature variation.
• Design and R&D engineers use results to optimize buffer tube, sheath and strength member materials to minimize fibre protrusion risk.
• Standards writers and procurement teams include EN IEC 60794-1-217:2024 in technical specifications and contracts for long-term reliability.

Related standards (if applicable)

• IEC/EN IEC 60794 series (general and other test methods)
• IEC 60794‑1‑211 (temperature chamber and conditioning practices referenced)
• IEC 60794‑1‑22:2017 (partially superseded)

Keywords: EN IEC 60794-1-217:2024, optical fibre cables, cable shrinkage, fibre protrusion, Method F17, environmental test, temperature cycling, cable testing, optical cable qualification.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2024
Optični kabli - 1-217. del: Splošna specifikacija - Osnovni preskusni postopki za
optične kable - Okoljske preskusne metode - Krčenje kabla (izbočena vlakna),
metoda F17 (IEC 60794-1-217:2024)
Optical fibre cables - Part 1-217: Generic specification - Basic optical cable test
procedures - Environmental test methods - Cable shrinkage (fibre protrusion), Method
F17 (IEC 60794-1-217:2024)
Lichtwellenleiterkabel - Teil 1-217: Fachgrundspezifikation - Grundlegende Prüfverfahren
für optische Kabel - Umweltprüfverfahren - Kabelschrumpfung (Faserüberstand),
Verfahren F17 (IEC 60794-1-217:2024)
Câbles à fibres optiques - Partie 1-217: Spécification générique - Procédures
fondamentales d’essais des câbles optiques - Méthodes d’essais d’environnement -
Rétraction de câble (excroissance de la fibre), méthode F17 (IEC 60794-1-217:2024)
Ta slovenski standard je istoveten z: EN IEC 60794-1-217:2024
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 60794-1-217

NORME EUROPÉENNE
EUROPÄISCHE NORM May 2024
ICS 33.180.10 Supersedes EN IEC 60794-1-22:2018 (partially)
English Version
Optical fibre cables - Part 1-217: Generic specification - Basic
optical cable test procedures - Environmental test methods -
Cable shrinkage (fibre protrusion), Method F17
(IEC 60794-1-217:2024)
Câbles à fibres optiques - Partie 1-217: Spécification Lichtwellenleiterkabel - Teil 1-217: Fachgrundspezifikation -
générique - Procédures fondamentales d'essais des câbles Grundlegende Prüfverfahren für optische Kabel -
optiques - Méthodes d'essais d'environnement - Rétraction Umweltprüfverfahren - Kabelschrumpfung
de câble (excroissance de la fibre), méthode F17 (Faserüberstand), Verfahren F17
(IEC 60794-1-217:2024) (IEC 60794-1-217:2024)
This European Standard was approved by CENELEC on 2024-05-08. 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,
Türkiye 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
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60794-1-217:2024 E

European foreword
The text of document 86A/2358/CDV, future edition 1 of IEC 60794-1-217, 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 60794-1-217:2024.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2025-02-08
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2027-05-08
document have to be withdrawn
This document partially supersedes EN IEC 60794-1-22:2018 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 60794-1-217:2024 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 standard indicated:
IEC 60794-1-22:2017 NOTE Approved as EN IEC 60794-1-22:2018 (not modified)
IEC 60794-1-211 NOTE Approved as EN IEC 60794-1-211
IEC 60794-1-212 NOTE Approved as EN IEC 60794-1-212
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.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60794-1-1 - Optical fibre cables - Part 1-1: Generic EN IEC 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 60794-1-217 ®
Edition 1.0 2024-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibre cables –
Part 1-217: Generic specification – Basic optical cable test procedures –

Environmental test methods – Cable shrinkage (fibre protrusion), Method F17

Câbles à fibres optiques –
Partie 1-217: Spécification générique – Procédures fondamentales d’essais des

câbles optiques – Méthodes d’essais d’environnement – Rétraction de câble

(excroissance de la fibre), méthode F17

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.10  ISBN 978-2-8322-8545-9

– 2 – IEC 60794-1-217:2024 © IEC 2024
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Method F17 – Cable shrinkage (fibre protrusion) . 6
4.1 Objective . 6
4.2 Sample . 7
4.3 Apparatus . 7
4.4 Procedure . 7
4.4.1 Preparation of the cable sample . 7
4.4.2 Preparation of the cable ends . 8
4.4.3 Initial measurements . 9
4.4.4 Temperature cycling . 9
4.4.5 Final measurements . 11
4.5 Requirements . 11
4.6 Details to be specified . 11
4.7 Details to be reported . 12
Annex A (informative) Test procedure for cables with rigid strength members . 13
A.1 Objective . 13
A.2 Sample . 13
A.3 Apparatus . 13
A.4 Procedure . 13
A.4.1 Preparation of the cable sample . 13
A.4.2 Preparation of the cable ends . 13
A.4.3 Initial measurements . 14
A.4.4 Temperature cycling . 15
A.4.5 Final measurements . 15
A.5 Recommended requirements . 16
A.6 Details to be specified . 16
A.7 Details to be reported . 17
Bibliography . 18

Figure 1 – Preparation of cable sample with prepared ends . 8
Figure 2 – Preparation of cable sample ends . 8
Figure 3 – Fibre protrusion measurement . 9
Figure 4 – Cycle procedure . 10
Figure A.1 – Preparation of cable sample ends . 14
Figure A.2 – Fibre protrusion measurement . 15

Table 1 – Minimum soak time t . 10
IEC 60794-1-217:2024 © IEC 2024 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 1-217: Generic specification –
Basic optical cable test procedures – Environmental test methods –
Cable shrinkage (fibre protrusion), method F17

FOREWORD
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shall not be held responsible for identifying any or all such patent rights.
IEC 60794-1-217 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical
committee 86: Fibre optics. It is an International Standard.
This document partially replaces IEC 60794-1-22:2017. This edition constitutes a technical
revision.
This edition includes the following significant technical changes with respect to
IEC 60794-1-22:2017:
a) added clarification in the objective that the purpose of this test procedure is to measure the
permanent fibre protrusion of cables without rigid strength members;
b) replaced the reference to method F1 for the apparatus with a detailed description for the
temperature chamber and temperature sensing device as done in IEC 60794-1-211;

– 4 – IEC 60794-1-217:2024 © IEC 2024
c) added a measuring device in the subclause for apparatus;
d) added conditioning before cutting the cable sample as done in IEC 60794-1-211
e) added all required steps in the subclause for temperature cycling as well as the table for the
minimum soak time and the figure for the cycle procedure, and removed the reference to
IEC 60794-1-22, method F1;
f) improved the figures and added a figure for preparation of the cable sample;
g) added the informative Annex A for the test procedure recommended for cables with rigid
strength members.
The text of this International Standard is based on the following documents:
Draft Report on voting
86A/2358/CDV 86A/2405/RVC
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/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, or
• revised.
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.

IEC 60794-1-217:2024 © IEC 2024 – 5 –
INTRODUCTION
This document defines the test method F17 to measure the change of fibre protrusion at both
cable ends caused by cable shrinkage due to thermal exposure.
The numbering of this test method continues the F-series numbering sequence of
IEC 60794-1-22:2017. This document cancels and replaces method F17 of
IEC 60794-1-22:2017, which will be withdrawn. It includes an editorial revision, based on the
new structure and numbering system for optical fibre cable test methods. Additionally, technical
changes were implemented. The environmental tests contained in IEC 60794-1-22:2017 will be
individually numbered in the IEC 60794-1-2xx series. Each test method is now considered to
be an individual document rather than part of a multi-test method compendium. Full cross-
reference details are given in IEC 60794-1-2.
All cables have a memory effect in the form of coils, and are elastic depending on the applied
force, making repeatable and reproducible measurements from one end to the other end on a
longer cable sample (for example 10 m or longer) very difficult or impossible. Therefore,
measurement of the fibre or cable element protrusion at both ends is a suitable and simple
alternative.
The advantage of this method is that the change in protrusion length can be directly compared
with the capability to accommodate this change of protrusion length in the application situation
(for example in a fibre distribution box). The limitation of this method is that the absolute
changes of the cable elements and sheath lengths cannot be determined.
The test method in this document determines the permanent fibre protrusion of cables without
rigid strength members compared to the cable elements and cable sheath due to temperature
changes. The reference for the fibre protrusion is in this case the end of the cable sheath.
The determination of the permanent fibre protrusion according to this test method is not
applicable if the strongest rigid strength member, often the central strength member, is to serve
as a reference. This is the case when the fixing of the rigid strength member is used in a
protective housing and the fixing of the rigid strength member is stronger than the fixing of the
cable sheath. For such an installation situation, the recommended test procedure is given in
Annex A.
IEC TR 62959 de
...