IEC 61557-2:20 19作为IEC 61557-2:20 19 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 61557-2:20 19规定了适用于测量断电状态下设备和装置绝缘电阻的设备的要求IEC 61557-2:20 19取消并取代了2007年发布的第二版。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)增加有关测量类别的要求； b)增加了对操作说明的新要求； c)结构与整个IEC 61557系列的结构对齐。

IEC 61557-2:2019 is available as IEC 61557-2:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 61557-2:2019 specifies the requirements applicable to equipment for measuring the insulation resistance of equipment and installations in the de-energized state IEC 61557-2:2019 cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) addition of requirements as regards measurement category;
b) addition of new requirements for operating instructions;
c) alignment of the structure with that of the the whole IEC 61557 series.