kSIST FprEN IEC 60794-1-126:2026
(Main)Optical fibre cables - Part 1-126: Generic specification - Basic optical cable test procedures - Mechanical tests methods - Galloping, method e26
Optical fibre cables - Part 1-126: Generic specification - Basic optical cable test procedures - Mechanical tests methods - Galloping, method e26
IEC 60794-1-126:2026 defines the test procedures used to establish uniform requirements for mechanical performance - galloping. It applies to optical fibre cables like ADSS, OPGW or OPPC that can be exposed to galloping phenomena. See IEC 60794-1-2 for general requirements and definitions and for a complete reference guide to test methods of all types. This first edition cancels and replaces Method E26 of the first edition of IEC 60794‑1‑21 published in 2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Addition of "for ADSS" and "for OPGW and OPPC" in 4.7, a);
b) Addition of "L4" in Figure 1 and in 4.7, b);
c) Change of the specified static sag angle to ≤ 1,5±0,5°;
d) Improvement of Figure 1;
Lichtwellenleiterkabel – Teil 1-126: Fachgrundspezifikation - Grundlegende Prüfverfahren für Lichtwellenleiterkabel - Mechanische Prüfverfahren - Galoppieren, Verfahren E26
Câbles à fibres optiques - Partie 1-126: Spécification générique - Procédures fondamentales d’essais des câbles optiques - Méthodes d’essais mécaniques - Galop, méthode e26
IEC 60794-1-126: 2026 définit les procédures d’essai utilisées pour établir des exigences uniformes pour les performances mécaniques aux phénomènes de galop. Elle s’applique aux câbles à fibres optiques (câble autoportant tout diélectrique (ADSS, All Dielectric Self-Supporting), câble de garde à fibres optiques (OPGW, OPtical Ground Wire) ou conducteur de phase à fibres optiques (OPPC, OPtical Phase Conductor), par exemple) qui peuvent être exposés à des phénomènes de galop. Voir l’IEC 60794-1-2 pour les exigences générales et les définitions, et un guide de référence complet pour tous les types de méthodes d’essai. Cette première édition annule et remplace la Méthode E26 donnée dans la première édition de l’IEC 60794‑1‑21 parue en 2015. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) ajout de "pour un câble ADSS" et "pour des câbles OPGW et OPPC" au 4.7, a);
b) ajout de "L4" à la Figure 1 et au 4.7, b);
c) modification de l’angle formé par la flèche statique spécifié à ≤ 1,5±0,5°;
d) amélioration de la Figure 1.
Optični kabli - 1-126. del: Splošna specifikacija - Osnovni preskusni postopki za optične kable - Mehanske preskusne metode - Galopiranje, metoda e26
General Information
- Status
- Not Published
- Public Enquiry End Date
- 30-Apr-2025
- Technical Committee
- MOC - Mobile Communications
- Current Stage
- 5020 - Formal vote (FV) (Adopted Project)
- Start Date
- 24-Dec-2025
- Due Date
- 11-Feb-2026
- Completion Date
- 16-Jan-2026
Relations
- Effective Date
- 09-Sep-2025
- Effective Date
- 09-Sep-2025
Overview
kSIST FprEN IEC 60794-1-126:2026 is an international standard developed by the CLC and IEC for the mechanical testing of optical fibre cables, specifically focusing on galloping phenomena. This standard provides a uniform test procedure-Method E26-for evaluating how optical fibre cables such as ADSS (All-Dielectric Self-Supporting), OPGW (Optical Ground Wire), and OPPC (Optical Phase Conductor) withstand dynamic mechanical stresses caused by galloping. Galloping typically arises in overhead cables due to ice accretion and wind, leading to large oscillatory movements that can compromise cable integrity and optical performance.
This standard is critically relevant for manufacturers, engineers, and quality assurance professionals involved in the design, installation, and maintenance of aerial optical fibre cables. It is a technical revision that supersedes Method E26 from IEC 60794-1-21:2015, introducing significant updates to testing requirements and procedures.
Key Topics
- Scope and Objectives
- Applies to optical fibre cables exposed to galloping, such as ADSS, OPGW, and OPPC.
- Defines standardized galloping test procedures to ensure mechanical and optical performance.
- Test Method E26: Galloping
- Describes how to stress test cable and support hardware under simulated galloping conditions.
- Assesses fatigue performance and changes in optical attenuation.
- Sample Preparation and Test Set-up
- Requires test samples with removable cable coverings and appropriate length to allow for comprehensive optical testing.
- Specifies use of electronic shakers, tensioning devices, and data acquisition equipment.
- Main Technical Changes in the 2025 Edition
- Addition of specific guidance for ADSS, OPGW, and OPPC cables.
- Updates to the static sag angle, now set to ≤ 1.5±0.5°.
- Inclusion of loop length (L4) and revised diagrams to clarify test setups.
- Reporting Requirements
- Specifies mandatory attributes to be reported, including installation tension, active/passive span lengths, sag angle, number of galloping cycles, and observed attenuation changes.
Applications
The test procedure prescribed in kSIST FprEN IEC 60794-1-126:2026 is essential for:
- Telecommunications Operators and Utilities: Assuring long-term performance and reliability for aerial fibre optic cables in power lines and communication networks, especially in regions prone to icing and strong winds.
- Cable Manufacturers: Validating product robustness and compliance during product development and quality control.
- Standards Compliance Testing: Satisfying regulatory and tender requirements for fibre optic infrastructure projects.
- Engineering and Installation Services: Selecting suitable cable types and installation methods based on galloping resistance validated under rigorous test conditions.
The galloping test simulates real-world conditions to prevent mechanical damage and unacceptable optical attenuation, ensuring the continued integrity and reliability of high-performance optical networks.
Related Standards
To ensure full compliance and proper reference, users of kSIST FprEN IEC 60794-1-126:2026 should also consult the following standards:
- IEC 60794-1-1: Optical fibre cables - Generic specification - General requirements.
- IEC 60794-1-2: Optical fibre cables - Basic optical cable test procedures - General guidance.
- IEC 60793-1-46: Optical fibres – Measurement methods and test procedures for monitoring changes in attenuation.
These related documents provide definitions, guidance for general test methods, and detailed procedures for optical performance measurement under mechanical stress.
Keywords: optical fibre cables, galloping test, IEC 60794-1-126, mechanical testing, ADSS, OPGW, OPPC, dynamic stresses, cable attenuation, aerial cable standards, fibre optic reliability.
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Frequently Asked Questions
kSIST FprEN IEC 60794-1-126:2026 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Optical fibre cables - Part 1-126: Generic specification - Basic optical cable test procedures - Mechanical tests methods - Galloping, method e26". This standard covers: IEC 60794-1-126:2026 defines the test procedures used to establish uniform requirements for mechanical performance - galloping. It applies to optical fibre cables like ADSS, OPGW or OPPC that can be exposed to galloping phenomena. See IEC 60794-1-2 for general requirements and definitions and for a complete reference guide to test methods of all types. This first edition cancels and replaces Method E26 of the first edition of IEC 60794‑1‑21 published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Addition of "for ADSS" and "for OPGW and OPPC" in 4.7, a); b) Addition of "L4" in Figure 1 and in 4.7, b); c) Change of the specified static sag angle to ≤ 1,5±0,5°; d) Improvement of Figure 1;
IEC 60794-1-126:2026 defines the test procedures used to establish uniform requirements for mechanical performance - galloping. It applies to optical fibre cables like ADSS, OPGW or OPPC that can be exposed to galloping phenomena. See IEC 60794-1-2 for general requirements and definitions and for a complete reference guide to test methods of all types. This first edition cancels and replaces Method E26 of the first edition of IEC 60794‑1‑21 published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Addition of "for ADSS" and "for OPGW and OPPC" in 4.7, a); b) Addition of "L4" in Figure 1 and in 4.7, b); c) Change of the specified static sag angle to ≤ 1,5±0,5°; d) Improvement of Figure 1;
kSIST FprEN IEC 60794-1-126:2026 is classified under the following ICS (International Classification for Standards) categories: 33.180.10 - Fibres and cables. The ICS classification helps identify the subject area and facilitates finding related standards.
kSIST FprEN IEC 60794-1-126:2026 has the following relationships with other standards: It is inter standard links to SIST EN 60794-1-21:2015/A1:2020, SIST EN 60794-1-21:2015. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
kSIST FprEN IEC 60794-1-126:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN IEC 60794-1-126:2025
01-april-2025
Optični kabli - 1-126. del: Splošna specifikacija - Osnovni preskusni postopki za
optične kable - Mehanske preskusne metode - Galopiranje, metoda e26
Optical fibre cables - Part 1-126: Generic specification - Basic optical cable test
procedures - Mechanical tests methods - Galloping, method e26
Câbles à fibres optiques - Partie 1-126: Spécification générique - Procédures
fondamentales d’essais des câbles optiques - Méthodes d’essais mécaniques - Galop,
méthode e26
Ta slovenski standard je istoveten z: prEN IEC 60794-1-126:2025
ICS:
33.180.10 (Optična) vlakna in kabli Fibres and cables
oSIST prEN IEC 60794-1-126:2025 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN IEC 60794-1-126:2025
oSIST prEN IEC 60794-1-126:2025
86A/2532/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60794-1-126 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-02-07 2025-05-02
SUPERSEDES DOCUMENTS:
86A/2480/CD, 86A/2527/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
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).
TITLE:
Optical fibre cables - Part 1-126: Generic specification - Basic optical cable test procedures -
Mechanical tests methods - Galloping, Method E26
PROPOSED STABILITY DATE: 2028
NOTE FROM TC/SC OFFICERS:
download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National
Committee positions. You may not copy or "mirror" the file or printed version of the document, or any part of it,
for any other purpose without permission in writing from IEC.
oSIST prEN IEC 60794-1-126:2025
IEC CDV 60794-1-126 © IEC 2025 2 86A/2532/CDV
1 CONTENTS
3 FOREWORD . 3
4 INTRODUCTION . 5
5 1 Scope . 6
6 2 Normative references . 6
7 3 Terms and definitions . 6
8 4 Method E26: Galloping . 6
9 4.1 Object . 6
10 4.2 Sample . 7
11 4.3 Apparatus . 7
12 4.4 Procedure . 7
13 4.5 Loading criteria: . 8
14 4.6 Requirements . 8
15 4.7 Details to be specified . 8
16 4.8 Details to be reported . 8
18 Figure 1 – Cable galloping test set-up . 9
oSIST prEN IEC 60794-1-126:2025
IEC CDV 60794-1-126 © IEC 2025 3 86A/2532/CDV
21 INTERNATIONAL ELECTROTECHNICAL COMMISSION
22 ____________
24 OPTICAL FIBRE CABLES –
26 Part 1-126: Generic specification –
27 Basic optical cable test procedures – Mechanical tests methods –
28 Galloping, Method E26
30 FOREWORD
31 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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59 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
60 indispensable for the correct application of this publication.
61 9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
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65 the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
66 shall not be held responsible for identifying any or all such patent rights.
67 IEC 60794-1-126 has been prepared by subcommittee 86A: Fibres and cables: of IEC technical
68 committee 86: Fibre optics. It is an International Standard.
69 This first edition cancels and replaces Method E26 of the first edition of IEC 60794-1-21
70 published in 2015, Amendment 1:2020. This edition constitutes a technical revision.
72 This edition includes the following significant technical changes with respect to the previous
73 edition:
74 a) addition …
75 b)
oSIST prEN IEC 60794-1-126:2025
IEC CDV 60794-1-126 © IEC 2025 4 86A/2532/CDV
76 The text of this International Standard is based on the following documents:
Draft Report on voting
86A/XX/FDIS 86A/XX/RVD
78 Full information on the voting for its approval can be found in the report on voting indicated in
79 the above table.
80 The language used for the development of this International Standard is English.
81 A list of all parts in the IEC 60794 series, published under the general title Optical fibre, can be
82 found on the IEC website.
83 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
84 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
85 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
86 described in greater detail at www.iec.ch/publications.
87 The committee has decided that the contents of this document will remain unchanged until the
88 stability date indicated on the IEC website under webstore.iec.ch in the data related to the
89 specific document. At this date, the document will be
90 • reconfirmed,
91 • withdrawn, or
92 • revised.
IMPORTANT – Th
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