Latest version of optical cable bending test standard

The most recent standard for optical cable bending tests is IEC 60794-1-301:2023, with additional draft methods in IEC 60794-1-117:2025 and IEC 60794-1-118:2025.IEC 60794-1-301:2023IEC 60794-1-301:2023 specifies test procedures for evaluating the mechanical bending properties of optical fiber cable elements. It applies to optical fiber cables used in telecommunications and devices with similar techniques, including cables that combine optical fibers and electrical conductors. The standard ensures uniform requirements for bending performance and includes detailed reporting requirements. This edition replaces IEC 60794-1-23:2019 and introduces significant technical updates, including new subclauses for reporting test results .Draft Standards for Specialized Bending TestsDIN EN IEC 60794-1-117:2025 (Draft): Focuses on bending stiffness of basic optical cables (Method E17). It provides standardized procedures to assess the physical resilience and structural integrity of optical fiber assemblies under bending conditions, ensuring consistent testing across manufacturing and deployment environments .DIN EN IEC 60794-1-118:2025 (Draft): Covers bending under tension (Method E18). This method evaluates cable performance when subjected to bending while under tensile load, simulating real-world installation stresses .Additional ConsiderationsSome related standards, such as BS EN 3745-510:2025, address attenuation variation during mechanical bending under load at different operating temperatures, which complements the mechanical bending tests by assessing optical performance under stress . These standards collectively provide a comprehensive framework for mechanical testing of optical fiber cables, covering general bending, bending stiffness, and bending under tension. For precise implementation, it is recommended to consult the official IEC or national standards documents.