IEC 60794-2:20 17是一个分段规范。它给出了适用于通信网络中室内使用的光缆的要求。可以考虑需要类似类型电缆的其他类型的应用。这第四版取消并取代了2002年出版的第三版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更: -通过与IEC 60794-1-1和IEC TR 61931的交叉引用，简化了本规范； -文件结构已与IEC 60794-3保持一致，并增加了关于光纤的第4条； -增加了第4条中的传输要求； -在关于电缆元件和结构的第5条中引入了电导体和电缆元件的铺设；-5.13在鉴别时，纤维、单元和鞘颜色编码分开； -扩大颜色编码建议，以适应最新的纤维类别； -增加了关于安装和运行条件的第6条； -通过使用表格而不是文本，简化了电缆元件测试和电缆测试； -增加了参考书目。 关键词:通信网络室内用光缆

IEC 60794-2:2017 is a sectional specification. It gives the requirements that apply to optical fibre cables for indoor use in communications networks. Other types of applications requiring similar types of cables can be considered. This fourth edition cancels and replaces the third edition published in 2002. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- the specification has been streamlined by cross-referencing with IEC 60794-1-1 and IEC TR 61931;
- the document structure has been aligned with IEC 60794-3, and Clause 4 on optical fibres was added;
- transmission requirements in Clause 4 were added;
- the electrical conductors and the lay-up of the cable elements were introduced into Article 5 on cable elements and construction;
- 5.13 on identification was separated in fibre, unit and sheath colour coding;
- the colour coding proposals were extended to accommodate latest fibre categories;
- Article 6 on installation and operating condition was added;
- cable element tests and cable tests have been simplified by the use of tables instead of text;
- a bibliography has been added.
Keywords: optical fibre cables for indoor use in communications networks