SIST EN 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 (IEC 60794-1-126:2026)
Optical fibre cables - Part 1-126: Generic specification - Basic optical cable test procedures - Mechanical tests methods - Galloping, Method E26 (IEC 60794-1-126:2026)
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 (IEC 60794-1-126:2026)
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)
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 (IEC 60794-1-126:2026)
General Information
- Status
- Not Published
- Public Enquiry End Date
- 30-Apr-2025
- Technical Committee
- MOC - Mobile Communications
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 16-Jun-2026
- Due Date
- 21-Aug-2026
Relations
- Effective Date
- 01-Sep-2026
- Effective Date
- 01-Sep-2026
- Effective Date
- 26-May-2026
- Effective Date
- 26-May-2026
- Effective Date
- 16-Jun-2026
- Effective Date
- 16-Jun-2026
- Effective Date
- 16-Jun-2026
Overview
SIST EN IEC 60794-1-126:2026 is an international standard that details the basic mechanical test procedures - specifically pertaining to the galloping phenomenon - for optical fibre cables. Published by the Slovenian Institute for Standardization (SIST), this document supersedes the previous Method E26 in IEC 60794-1-21:2015, incorporating technical revisions to ensure updated, harmonized testing frameworks. The standard is applicable to critical types of aerial optical fibre cables, including All-Dielectric Self-Supporting (ADSS) cables, Optical Ground Wire (OPGW), and Optical Phase Conductor (OPPC), which may be subject to galloping due to environmental effects such as wind and ice load.
Uniformity and reliability in mechanical performance testing are the standard's core objectives, ensuring that cables used in telecommunications and power utilities meet robust international criteria for durability and performance under dynamic load conditions.
Key Topics
Scope and Applicability
- Focuses on optical fibre cables that may experience galloping due to adverse weather conditions.
- Applies to ADSS, OPGW, and OPPC cable types deployed in aerial installations.
Test Procedures
- Describes Method E26 for simulating and testing cable galloping.
- Specifies a standardized mechanical test rig and procedure to replicate dynamic stresses caused by galloping motions, typically resulting from ice accretion and wind.
Sample and Test Setup
- Defines required cable sample lengths and termination to ensure accurate optical measurement and mechanical testing.
- Instructs on securing cables, tensioning parameters, and monitoring devices used to assess performance.
Performance Criteria
- Outlines the monitoring of optical attenuation changes throughout test cycles.
- Establishes requirements for permissible physical and optical degradation.
Reporting Protocols
- Lists the key technical attributes and data points to be reported, supporting transparency and comparability of test outcomes.
Revision Highlights
- Updates terminology to distinctly address ADSS, OPGW, and OPPC.
- Modifies figures and static sag angle specifications for greater clarity and precision.
Applications
SIST EN IEC 60794-1-126:2026 serves a pivotal role in the design, quality assurance, and type testing of aerial optical fibre cables used in environments susceptible to dynamic forces. Major applications include:
- Telecommunications Infrastructure: Ensuring consistent performance of optical fibre networks in aerial deployments, especially across regions with challenging weather patterns.
- Power Transmission Systems: Validating OPGW and OPPC installations on overhead power lines, where galloping risks are significant due to ice and wind.
- Cable Manufacturing: Guiding manufacturers in type-testing products to ensure compliance with international mechanical standards and reduce risk of in-service failure.
- Testing Laboratories: Providing standardized procedures for contract and third-party labs to verify cable products against mechanical criteria before deployment.
The standard's uniform methodology supports reliable cable selection, risk mitigation, and network resilience, directly benefiting manufacturers, utilities, telecom operators, and infrastructure planners.
Related Standards
For comprehensive understanding and complete application, refer to these related standards:
- 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 60793-1-46: Optical fibres – Measurement methods and test procedures - Monitoring of changes in attenuation
These documents offer general requirements, testing frameworks, and detailed definitions that complement the specific procedures outlined in SIST EN IEC 60794-1-126:2026, forming a holistic support system for quality assurance in fibre optic cable deployment.
By setting unified testing protocols for galloping phenomena in optical fibre cables, SIST EN IEC 60794-1-126:2026 ensures safer, more reliable aerial cable installations across global telecom and utility networks, supporting sustainable infrastructure growth.
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Intertek testing, inspection, and certification services in Slovenia.
LNE (Laboratoire National de Métrologie et d'Essais)
French national laboratory for metrology and testing.
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Frequently Asked Questions
SIST EN 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 (IEC 60794-1-126:2026)". 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;
SIST EN 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.
SIST EN IEC 60794-1-126:2026 has the following relationships with other standards: It is inter standard links to SIST EN 60794-1-21:2015, SIST EN 60794-1-21:2015/A1:2020, SIST EN IEC 60793-1-46:2024, SIST EN IEC 60794-1-1:2023, SIST EN IEC 62148-1:2018, SIST EN 3745-505:2018, SIST-TS CLC/TS 50621:2016. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 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
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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
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89 specific document. At this date, the document will be
90 • reconfirmed,
91 • withdrawn, or
92 • revised.
IMPORTANT – Th
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