IEC 60794-1-2:20 21作为IEC 60794-1-2:20 21 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC 60794-1-2:20 21适用于与采用类似技术的电信设备和装置一起使用的光纤电缆，以及具有光纤和电导体组合的电缆。本文件的目的是定义适用于IEC 60794-1（所有部分）所有电缆测试方法的一般要求和方法指南。本文件的第二个目的是向最终用户提供IEC 60794-1系列不同部分中包含的不同测试方法的概述。这第五版取消并取代了2017年出版的第四版。本版构成技术修订版。与上一版相比，此版本包含以下重大技术变更: -增加了列出新试验方法编号和先前试验方法编号的交叉参考表。

IEC 60794-1-2:2021 is available as IEC 60794-1-2:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60794-1-2:2021 applies to optical fibre cables for use with telecommunications equipment and devices employing similar techniques, and to cables having a combination of both optical fibres and electrical conductors. An objective of this document is to define general requirements and methodology guidance applicable to all of the cable test methods of IEC 60794-1 (all parts). A second objective of this document is to provide the end user with an overview of the different test methods contained in the different parts of the IEC 60794-1 series. This fifth edition cancels and replaces the fourth edition published in 2017. This edition constitutes a technical revision. This edition includes the following significant technical change with respect to the previous edition:
- addition of cross-reference tables listing the new test method numbers and the previous test method numbers.