IEC 60794-1-126:2026 pdf download,Optical fibre cables – Part 1-126: Generic specification – Basic optical cable test procedures – Mechanical tests methods – Galloping, Method E26.
IEC 60794‑1‑126:2026 is a new standalone international standard published in April 2026, focusing on galloping test Method E26 for optical fibre cables. It belongs to the IEC 60794 series, replacing and restructuring the galloping test previously contained in IEC 60794‑1‑21:2015. The standard applies specifically to overhead cables such as ADSS, OPGW, and OPPC, which are prone to wind‑induced galloping in outdoor environments.
The document specifies the complete test procedure for evaluating a cable’s ability to withstand sustained, large‑amplitude galloping vibrations. It covers sample preparation, test apparatus setup, loading conditions, and acceptance criteria. Key technical updates include refined static sag angle requirements, improved test figure illustrations, and separate provisions for ADSS versus OPGW/OPPC cables. The test assesses both mechanical integrity and optical performance, ensuring no excessive attenuation or structural damage occurs under simulated galloping conditions.
This standard serves as a unified reference for manufacturers, test laboratories, and operators worldwide. By establishing consistent galloping test methods, it helps verify that overhead optical cables can endure extreme wind‑induced vibration, reducing the risk of fatigue failure and service disruption in power and communication networks.