IEC 60794-1-136:2026

Overview

IEC 60794-1-136:2026 is an international standard developed by the International Electrotechnical Commission (IEC) for optical fibre cables. It provides standardized procedures to determine the maximum applicable push force during cable installation by blowing. This standard is especially relevant for low-diameter microduct cables without rigid strength elements, a growing segment in the fibre optic infrastructure market.

Understanding and adhering to this standard ensures cable manufacturers, installers, and network designers can assess and optimize cable performance, minimize installation risks, and help maintain the long-term reliability of optical networks. The methods set in IEC 60794-1-136:2026 enable accurate measurement and documentation of the maximum push force that can be safely applied during installation, reducing the likelihood of damaging cables during the blowing process.

Key Topics

• Blowing installation method: Focuses on cables installed in ducts by air-blowing, a fast and efficient deployment technique.
• Maximum allowable push force: Defines how much pushing force can be applied to a cable during installation before risking damage such as buckling.
• Test methods: Specifies two main procedures:
  • Method E36A: A reference test method based on the theoretical calculation involving cable bending stiffness and minimum allowable bend radius.
  • Method E36B: An experimental procedure involving the physical insertion of cable samples into ducts and measuring forces during buckling.
• Microduct cables: Applies primarily to cables confirmed as microduct type under IEC 60794-5, without rigid strength elements like GRP rods.
• Test conditions: Describes essential test variables such as temperature, humidity, use of lubrication, and consistent measuring apparatus.

Applications

IEC 60794-1-136:2026 is essential for organizations involved in the design, testing, manufacturing, and installation of fibre optic cables, especially where the blowing method is used for microduct cable installation. Typical applications include:

• Telecommunications infrastructure: Ensuring reliable and damage-free installation of microduct cables in high-speed internet and broadband deployments.
• Data centers and campus networks: Facilitating the robust deployment of optical fibre connections across large facilities.
• Cable manufacturing quality assurance: Allowing manufacturers to certify their products meet international standards and to support product documentation and tender requirements.
• Network construction and maintenance: Helping installers specify and adhere to maximum installation forces, thus extending the operational life and reliability of the optical network.

Adhering to this standard helps minimize downtime, reduce maintenance costs, and optimize network performance by ensuring compliant and damage-free cable installation.

Related Standards

The following related IEC standards provide additional context and procedures:

• IEC 60794-1-21: Basic optical cable test procedures, specifically referencing mechanical test methods.
• IEC 60794-5: Sectional specification for microduct cabling, highly relevant to the cable types covered in IEC 60794-1-136.
• Supporting documents and technical reports for the installation and testing of optical fibre cables.

By following IEC 60794-1-136:2026 and its related standards, stakeholders in the optical fibre cable sector can ensure installations meet international quality and reliability benchmarks, which is crucial for maintaining future-ready network infrastructures.