光纤电缆 第2-20部分：室内电缆 多芯光纤电缆的家族规范

[中文适用范围]： 本部分IEC 60794是一个家族规范，涵盖室内使用的多纤光缆。IEC 60794-2的分规范要求适用于本文件所涵盖的电缆。如果电缆打算用于由ISO/IEC 11801-1的MICE表控制的安装中，则附件B包含一个空白详细规范和一般指南。 [外文原描述]： IEC 60794-2-20:2024 is part of a family specification covering multi-fibre optical cables for indoor use. The requirements of the sectional specification IEC 60794-2 are applicable to cables covered by this document. Annex B contains a blank detail specification and general guidance in case the cables are intended to be used in installations governed by the MICE table of ISO/IEC 11801-1. This fourth edition cancels and replaces the third edition published in 2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) update of the normative references; b) review update of parameters and requirements for mechanical tests and environmental tests, maintaining alignment with additional relevant standards in the IEC 60794-2 series; c) addition of cabled fibre attenuation requirements; d) addition of cable design examples. This document is to be used in conjunction with IEC 60794-1-1:2023, IEC 60794-1-2:2021, IEC 60794‑1‑21:2015 and IEC 60794‑1‑21:2015/AMD:2020, IEC 60794-1-22:2017, IEC 60794‑1-23:2019 and IEC 60794‑2:2017.