光缆第1-215部分:总规范基本光缆试验程序环境试验方法电缆外部冻结试验方法F15法

[中文适用范围]： 本部分 IEC 60794-1 定义了用于建立统一要求的测试程序，适用于以下用途的光纤电缆的环境性能： • 用于电信设备和采用类似技术的设备的光纤电缆，以及 • 同时包含光纤和导体的电缆。 在整个文档中，“光缆”一词还可以包括光纤单元、微管光纤单元等。 本文件定义了一个测试标准，用于确定电缆在冻结水影响下的能力，通过观察护套的物理外观变化或测量电缆的光衰减变化来确定。 方法 F15A 是模拟埋地电缆周围介质冻结的测试标准，如湿土或水。方法 F15A 从 IEC 60794-1-22:2017 中的方法 F15 转移而来，无任何技术变更。 方法 F15B 是模拟外部电缆在刚性导管（管道）中冻结的测试标准，该导管由刚性材料制成，例如钢。方法 F15B 包括防止电缆在刚性导管中冻结时被压碎的解决方案，如压力吸收垫和任何其他建议的电缆保护措施。 所有类型测试方法的参考指南以及一般要求可在 IEC 60794-1-2 中找到。 [外文原描述]： IEC 60794-1-215:2020 defines test procedures to be used in establishing uniform requirements for the environmental performance of - optical fibre cables for use with telecommunication equipment and devices employing similar techniques, and - cables having a combination of both optical fibres and electrical conductors. Throughout this document, the wording "optical cable" can also include optical fibre units, microduct fibre units, etc. This document defines a test standard to determine the ability of a cable to withstand the effects of freezing water that can immediately surround the optical fibre cable sheath by observing any changes in the physical appearance of the sheath, or in the measured cable optical attenuation. Method F15A is a test standard to simulate freezing of the medium surrounding a buried cable, as in wet earth or water. Method F15A is moved from method F15 in IEC 60794-1-22:2017 without any technical changes. Method F15B is a test standard to simulate freezing of the medium surrounding an outside cable in a rigid conduit (duct) which is made of rigid material, for example steel. Method F15B includes the solution to prevent the cable from being crushed when experiencing freezing conditions in a rigid conduit (duct) which are pressure absorber pads and any other suggested means of cable protection. A reference guide to test methods of all types as well as general requirements can be found in IEC 60794-1-2.