IEC 61557-11:20 20作为IEC 61557-11:20 20 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 61557-11:20 20规定了测试设备的要求用于测试已安装在配电系统中的剩余电流监测器(RCM)的有效性。该测试设备可用于任何类型的网络，如TN、TT或IT系统。该测试设备还可用于测试IT系统中的定向判别剩余电流监测器（RCM）。本文件的目的不是根据剩余电流监测器（RCM）的产品标准对其进行验证。IEC 61557-11:20 20取消并取代了2009年发布的第一版。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)修改文件标题以包括所有类型的RCM； b)符合IEC 60050的术语； c)增加了测试新型RCM的要求； d)将区域协调机制B类的要求从以前的附件A移至正文； e)结构与整个IEC 61557系列的结构对齐。

IEC 61557-11:2020 is available as IEC 61557-11:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 61557-11:2020 specifies the requirements for test equipment applied to the testing of the effectiveness of residual current monitors (RCM) that are already installed in distribution systems. This test equipment can be used in any kind of network, such as a TN, TT or IT system. The test equipment can also be used for testing directionally discriminating residual current monitors (RCM) in IT systems. It is not the purpose of this document to verify the residual current monitors (RCM) according to their product standards. IEC 61557-11:2020 cancels and replaces the first edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) document title modified to include all types of RCM;
b) terms aligned with IEC 60050;
c) addition of requirements for testing new types of RCM;
d) moving of requirements for RCM Type B from former Annex A to main body text;
e) alignment of the structure with that of the whole IEC 61557 series.