IEC 62271-212:2022作为IEC 62271-212:2022 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 62271-212；2022规定了高压变电站主电气功能单元组件的使用条件、额定特性、一般结构要求和测试方法，高压侧交流电压不超过52 kV，工作频率为50 Hz或60 Hz。CEADS通过电缆连接到高压网络，适用于限制访问的室内和室外应用。这第二版取消并取代了2016年出版的第一版。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:-条款编号与IEC 62271-1:20 17一致， -重新拟订文件的标题和范围， -根据IEC 62271-202，随着预制变电站概念的发展，对内部电弧定义和测试实施变更， -对互连的温升或介电测试等主要测试程序的一般审查，考虑控制设备、通信、智能电网设备和组件集成， -安装、操作、安全和维护要求的一般审查。

IEC 62271-212:2022 is available as IEC 62271-212:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 62271-212;2022 specifies the service conditions, rated characteristics, general structural requirements and test methods of the assemblies of the main electrical functional units of a high-voltage transformer substation, duly interconnected, for AC voltages up to and including 52 kV on the high-voltage side and service frequency 50 Hz or 60 Hz. The CEADS is cable？connected to the high-voltage network for indoor and outdoor applications of restricted access. This second edition cancels and replaces the first edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- clause numbering aligned with IEC 62271-1:2017,
- rewording of title and scope of the document,
- implement changes on internal arc definition and testing following the evolution of prefabricated substation concept according to IEC 62271-202,
- general review of main test procedures such as temperature rise or dielectric test on interconnections, considering control equipment, communication, smart grid devices and integration of components,
- general review of installation, operation, safety and maintenance requirements.