标准摘要
[中文适用范围]： IEC 60794-1-119:2025 适用于可能遭受风振影响的光缆，包括全介质自承式（ADSS）光缆、光纤复合架空地线（OPGW）光缆以及光纤复合相线（OPPC）光缆。本文件规定了用于确立与风振相关统一机械性能要求的测试方法。关于通用要求与定义，以及各类测试方法的完整参考指南，请参阅 IEC 60794-1-2。本文件为第一版，取代了 2015 年发布的 IEC 60794-1-21 第一版中的测试方法 E19，属于技术修订版。相对于 IEC 60794-1-21，本版本包含以下重大技术变更：a) 增加了在测试过程中保持光缆张力恒定的系统，以及测量自由环节波腹幅度的手段；b) 明确了光缆负载标准：对于 OPGW/OPPC 光缆，负载固定为其额定抗拉强度的 25%；对于 ADSS 光缆，则采用最大安装张力（MIT）；c) 在测试程序中增加了目标自由环节波腹峰峰值振幅指标；d) 将风振运动质量的评估引入波腹平均幅度分析；e) 将光纤芯的疲劳损伤及椭圆度变化纳入第 4.5 节的评估内容。 [外文原描述]： IEC 60794-1-119:2025 applies to aerial optical fibre cables such as all-dielectric self-supporting (ADSS) cables, optical ground wire (OPGW) cables, and optical phase conductor (OPPC) cables that can be exposed to aeolian vibrations. This document defines the test procedures to establish uniform mechanical performance requirements relating to aeolian vibrations. 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 test method E19 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 IEC 60794‑1‑21: a) addition of a system to maintain a constant cable tension during the test as well as means to measure the free loop antinode amplitude; b) definition of the cable load which is now fixed to 25 % of the rated tensile strength for OPGW/OPPC, or to the maximum installation tension (MIT) for ADSS cables; c) addition of the target free loop peak-to-peak antinode amplitude to the procedure. The quality of the aeolian vibration motion is done through the average antinode d) addition of fatigue damage and ovality changes of the optical core to 4.5.
英文名称Optical fibre cables - Part 1-119: Generic specification - Basic optical cable test procedures - Mechanical tests methods - Aeolian vibration, Method E19