光缆第1-31部分:总规范光缆元件光纤带

[中文适用范围]： 本部分为IEC 60794的通用规范，涵盖光纤带。本部分所述要求适用于用于电信设备及采用类似技术的设备的光纤带电缆，特别是IEC 60794-2中用于室内的光纤电缆、IEC 60794-3中用于室外的光纤电缆、IEC 60794-4中用于自支撑架空的光纤电缆、IEC 60794-5中用于气流吹放的光纤电缆以及IEC 60794-6中用于室内/室外使用的光纤电缆。详细规范可在IEC 60794-2和IEC 60794-3等应用规范中验证。 [外文原描述]： IEC 60794-1-31:2021 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 60794-1-31:2021 which is a generic specification, covers optical fibre ribbons. Requirements which are described in this part apply to optical fibre ribbon cables for use with telecommunication equipment and devices employing similar techniques, in particular optical fibre cables in IEC 60794-2 for indoor use, in IEC 60794-3 for outdoor use, in IEC 60794-4 for self-supporting overhead use, in IEC 60794-5 for air blown use and in IEC 60794-6 for indoor/outdoor use. The detailed specification can be verified in specifications for each application such as IEC 60794-2 and IEC 60794-3. This second edition cancels and replaces the first edition published in 2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - The geometrical requirements for optical fibre ribbon with typically 250 µm coating diameter have been modified and those for the optical fibre ribbon with typically 200 µm coating diameter have been added. - "Identification by positional identification" and "Identification by ribbon coding and fibre colouring" are moved to a new informative Annex A.