oSIST prEN IEC 60794-1-117:2025

SLOVENSKI STANDARD
01-maj-2025
Optični kabli - 1-117. del: Splošna specifikacija - Osnovni preskusni postopki za
optične kable - Mehanske preskusne metode - Upogibna togost, metoda E17
Optical fibre cables - Part 1-117: Generic specification - Basic optical cable test
procedures - Mechanical tests methods - Bending stiffness, Method E17
Câbles à fibres optiques - Partie 1-117: Spécification générique - Procédures
fondamentales d’essais des câbles optiques - Méthodes d’essais mécaniques - Raideur,
méthode E17
Ta slovenski standard je istoveten z: prEN IEC 60794-1-117:2025
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.

86A/2540/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60794-1-117 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-03-07 2025-05-30
SUPERSEDES DOCUMENTS:
86A/2437/CD, 86A/2498/CC
IEC SC 86A : FIBRES AND CABLES
SECRETARIAT: SECRETARY:
France Mr Laurent Gasca
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
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TITLE:
Optical fibre cables - Part 1-117: Generic specification - Basic optical cable test procedures -
Mechanical tests methods - Bending stiffness, Method E17

PROPOSED STABILITY DATE: 2028
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IEC CDV 60794-1-117/Ed1 © IEC 2025      – 2 –                         86A/2540/CDV

CONTENTS
CONTENTS . 2
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Method E17: Bending stiffness . 5
4.1 Object . 5
4.2 General . 6
4.3 Method E17A: Three-point bend . 6
4.3.1 Sample . 6
4.3.2 Apparatus . 6
4.3.3 Procedure . 6
4.3.4 Requirements . 7
4.3.5 Details to be specified . 7
4.3.6 Details to be reported . 7
4.4 Method E17B: cantilever bend . 7
4.4.1 Sample . 7
4.4.2 Apparatus . 7
4.4.3 Procedure . 8
4.4.4 Requirements . 8
4.4.5 Details to be specified . 8
4.4.6 Details to be reported . 8
4.5 Method E17C: Buckling bend . 8
4.5.1 Sample . 8
4.5.2 Apparatus . 8
4.5.3 Procedure . 8
4.5.4 Requirements . 9
4.5.5 Details to be specified . 9
4.5.6 Details to be reported . 9

Figure 1 – Method E17A – Test set-up . 9
Figure 2 – Example of results of applied force and displacement . 10
Figure 3 – Method E17B – Test set-up . 10
Figure 4 – Method E17C – Test set-up . 10

IEC CDV 60794-1-117/Ed1 © IEC 2025      – 3 –                         86A/2540/CDV

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 1-117: Generic specification –
Basic optical cable test procedures –
Mechanical test methods – Bending stiffness, method E17

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
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60794-1-21 has been prepared by subcommittee 86A: Fibres and cables, of IEC
technical committee 86: Fibre optics.
IEC 60794-1-110 has been prepared by subcommittee 86A: Fibres and cables, of IEC
technical committee 86: Fibre optics. It is an International Standard.

This first edition cancels and replaces Method E17 of the first edition of IEC 60794-1-21:2015,
which will be withdrawn. It constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) added a new clause “4.3.6 Details to be reported”;
b) added a new clause “4.4.6 Details to be reported”;
c) added a new clause “4.5.6 Details to be reported”.
The text of this is based on the following documents:
Draft Report on voting
IEC CDV 60794-1-117/Ed1 © IEC 2025      – 4 –                         86A/2540/CDV

XX/XX/FDIS XX/XX/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.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://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.
IEC CDV 60794-1-117/Ed1 © IEC 2025      – 5 –                         86A/2540/CDV

OPTICAL FIBRE CABLES –
Part 1-117: Generic specification –
Basic optical cable test procedures –
Mechanical test methods – Bending stiffness, method E17

1 Scope
This part of IEC 60794 applies to optical fibre cables for use with telecommunication equipment
and devices employing similar techniques, and to cables having a combination of both optical
fibres and electrical conductors.
The object of this standard is to define test procedures to be used in establishing uniform
requirements for bending stiffness performance.
Throughout this standard the wording “optical cable” may also include optical fibre units,
microduct fibre units, etc.
See IEC 60794-1-2 for general requirements and definitions and for a complete reference guide
to test methods of all types.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
IEC 60794-1-1, Optical fibres – 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
3 Terms and definitions
For the purposes of this document, the terms and definitions 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 Method E17: Bending stiffness
4.1 Object
The purpose of this test is to measure the bending stiffness of an optical fibre cable. Three
alternative methods are applicable, depending on the type of cable.
...