IEC 60794-1-401:2021适用于短路测试，旨在评估典型短路下光学地线（OPGW）或光学相位导体（OPPC）的性能，或在信使线上短路电流下对光学连接电缆（OPAC）性能的影响。本第一版取消并取代2014年发布的IEC 60794-1-24第一版。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: a)包括OPPC； b)测试方法已更新。

IEC 60794-1-401:2021 applies to the short-circuit test intended to assess the performance of an optical ground wire (OPGW) or optical phase conductor (OPPC) under typical short-circuit, or the impact on the performance of optical attached cable (OPAC) under short-circuit current on the messenger wire. This first edition cancels and replaces the first edition of IEC 60794-1-24 published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) OPPC is included;
b) the test methods have been updated.