kSIST FprEN IEC 60794-1-136:2026

Optical fibre cables - Part 1-136: Generic specification - Basic optical cable test procedures - Determination of the maximum applicable push force during cable installation by blowing

IEC 60794-1-136:2026 specifies procedures to determine the maximum allowable push force applied on cables during the installation by blowing. Currently this parameter is determined by a separate test on the cable before installation. The methods specified in this document apply primarily to low-diameter cables (microduct cables according to IEC 60794-5) without rigid strength elements (e.g. GRP rods).

Lichtwellenleiterkabel – Teil 1-136: Fachgrundspezifikation - Grundlegende Prüfverfahren für Lichtwellenleiterkabel - Bestimmung der maximal anwendbaren Einschubkraft beim Einblasen von Kabeln

Câbles à fibres optiques - Partie 1-136: Spécification générique - Procédures fondamentales d’essais des câbles optiques - Détermination de la force de poussée maximale applicable lors de l'installation du câble par soufflage

L'IEC 60794-1-136:2026 spécifie des procédures pour déterminer la force de poussée maximale admissible appliquée sur les câbles lors de l'installation par soufflage. Actuellement, ce paramètre est déterminé par un essai séparé sur le câble avant l'installation. Les méthodes spécifiées dans le présent document s'appliquent principalement aux câbles de faible diamètre (câbles en microconduits conformément à l'IEC 60794-5) dépourvus d'éléments de résistance rigides (p. ex. tiges en PRV).

Optični kabli - 1-136. del: Splošne specifikacije - Osnovni preskusni postopki za optične kable - Določitev največje uporabne potisne sile pri vgradnji kabla z vpihovanjem

General Information

• Status: Not Published
• Public Enquiry End Date: 17-May-2025
• ICS: 33.180.10 - Fibres and cables
• Technical Committee: MOC - Mobile Communications
• Current Stage: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 04-Feb-2026
• Due Date: 25-Mar-2026
• Completion Date: 05-Feb-2026
• Ref Project: FprEN IEC 60794-1-136:2026 - Optical fibre cables - Part 1-136: Generic specification - Basic optical cable test procedures - Determination of the maximum applicable push force during cable installation by blowing

Overview

kSIST FprEN IEC 60794-1-136:2026 is an international standard developed by CLC, focusing on optical fibre cables, specifically “Part 1-136: Generic specification - Basic optical cable test procedures - Determination of the maximum applicable push force during cable installation by blowing.” This standard provides structured, repeatable procedures to determine the maximum allowable push force exerted on microduct optical fibre cables during installation by blowing. These procedures are especially relevant for low-diameter microduct cables that lack rigid strength elements-primarily those defined under IEC 60794-5.

Determining the maximum permissible push force is critical to avoid damaging delicate optical fibres during installation, thereby ensuring long-term network reliability and service quality. The methodologies outlined help manufacturers, installers, and network designers guarantee that cable performance is not compromised during deployment.

Key Topics

• Maximum Allowable Push Force: Defines laboratory procedures for determining the maximal force that can be safely applied to optical fibre microduct cables during the blowing installation process.
• Test Methods (E36A and E36B):
  • E36A: A reference test method using theoretical calculation based on bend stiffness and the minimum allowable bend radius.
  • E36B: An alternative test method involving a practical experiment where a cable sample is physically pushed inside a microduct until buckling occurs.
• Test Sample and Apparatus: Specifies appropriate cable and duct sample sizes, and required measurement setups for repeatable results.
• Test Conditions: Outlines environmental controls such as temperature, humidity, and pressure to ensure reproducible results.
• Reporting Requirements: Details specific data to record and report, such as force-displacement graphs and conditions, to ensure traceability and compliance.

Applications

The standard is primarily applicable to:

• Microduct Optical Fibre Cable Installations: Provides essential quality assurance for installers deploying optical fibre cables using air-blown (blowing) techniques, particularly in access and metro networks.
• Product Development and Testing: Supports cable manufacturers in qualifying new cable designs and verifying compliance with installation requirements.
• Network Planning and Design: Enables network engineers to select appropriate cable types and installation parameters, reducing risk of damage during installation.
• Third-party Testing and Certification: Offers a recognized validation methodology for independent test labs and certifying bodies evaluating microduct cable products.

By adhering to this standard, stakeholders minimize installation damage, ensure optimal cable performance, and comply with industry expectations for microduct cable installations.

Related Standards

For comprehensive understanding and effective application of kSIST FprEN IEC 60794-1-136:2026, it is beneficial to reference the following related standards:

• IEC 60794-1-21: Optical fibre cables - Part 1-21: Basic mechanical test methods for optical cables, referenced for stiffness testing and other mechanical properties.
• IEC 60794-5: Optical fibre cables - Part 5: Sectional specification for microduct cabling intended for blowing installation.
• Relevant IEC/ISO Terminology: Definitions and concepts can be found at IEC Electropedia and ISO Online Browsing Platform.

Keywords: optical fibre cable, microduct cable, maximum push force, cable installation by blowing, IEC 60794-1-136, optical cable test procedures, fibre optic standard, cable buckling, cable installation best practices.

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Through its focused procedures and guidelines, kSIST FprEN IEC 60794-1-136:2026 ensures safe, reliable, and standardized cable installation practices, supporting the deployment of robust optical communication infrastructure worldwide.

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN IEC 60794-1-136:2025
01-maj-2025
Optični kabli - 1-136. del: Splošne specifikacije - Osnovni preskusni postopki za
optične kable - Določitev največje uporabne potisne sile pri vgradnji kabla s
pihanjem
Optical fibre cables - Part 1-136: Generic specification - Basic optical cable test
procedures - Determination of the maximum applicable push force during cable
installation by blowing
Câbles à fibres optiques - Partie 1-136: Spécification générique - Procédures
fondamentales d’essais des câbles optiques - Détermination de la force de poussée
maximale applicable lors de l'installation du câble par soufflage
Ta slovenski standard je istoveten z: prEN IEC 60794-1-136:2025
ICS:
33.180.10 (Optična) vlakna in kabli Fibres and cables
oSIST prEN IEC 60794-1-136:2025 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 60794-1-136:2025

oSIST prEN IEC 60794-1-136:2025
86A/2522/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60794-1-136 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-01-24 2025-04-18
SUPERSEDES DOCUMENTS:
86A/2469/CD, 86A/2519/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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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.
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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 1-136: Generic specification – Basic optical cable test procedures –
Determination of the maximum applicable push force during cable installation by blowing

PROPOSED STABILITY DATE: 2028
NOTE FROM TC/SC OFFICERS:
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
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oSIST prEN IEC 60794-1-136:2025
IEC CDV 60794-1-136 ED1 © IEC 2025 2 86A/2522/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 General . 6
9 5 Sample . 7
10 6 Apparatus . 7
11 6.1 Apparatus for method E36A . 7
12 6.2 Apparatus for method E36B . 7
13 7 Test conditions . 7
14 8 Procedure . 8
15 9 Details to be specified . 9
16 10 Details to be recorded . 9
17 Annex A (informative) Test set-up . 11
18 A.1 Test set-up for the push force test . 11
19 Bibliography . 12
21 Figure 1: Schematic test set-up a) Cable is inserted b) The piston is pushed into the
22 duct 7
23 Figure 2: Example of a graph which shows the forces F (applied to push the piston
push
24 into the duct) and Freaction (reactive force at the top cable end). The green “box”
25 indicates the window which is moved along the F -curve. . 9
reaction
26 Figure A.1 – Practical implementation of the test set-up shown in Fig. 1 . 11
oSIST prEN IEC 60794-1-136:2025
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30 INTERNATIONAL ELECTROTECHNICAL COMMISSION
31 ____________
33 OPTICAL FIBRE CABLES
35 Part 1-136: Generic specification – Basic optical cable test procedures –
36 Determination of the maximum applicable push force during cable
37 installation by blowing
40 FOREWORD
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73 IEC 60794-1-136 has been prepared by subcommittee IEC SC86A WG3: Optical Cables, of IEC
74 technical committee TC86: Fibre Optics. It is […an International Standard, a Technical
75 Specification: specify document type…].
76 In the case of a new edition replacing a previous edition, complete the following text. In
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78 a)
79 The text of this [International Standard] is.
80 The language used for the development of this International Standardis English .
81 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
82 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

oSIST prEN IEC 60794-1-136:2025
IEC CDV 60794-1-136 ED1 © IEC 2025 4 86A/2522/CDV

83 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
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88 • reconfirmed,
89 • withdrawn,
90 • replaced by a revised edition, or
91 • amended.
oSIST prEN IEC 60794-1-136:2025
IEC CDV 60794-1-136 ED1 © IEC 2025 5 86A/2522/CDV

93 INTRODUCTION
94 The International Electrotechnical Commission (IEC) draws attention to the fact that it is claimed
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