IEC 60034-2-1:20 24作为IEC 60034-2-1:20 24 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 60034-2-1:20 24旨在建立通过测试确定效率的方法，并指定获得特定损失的方法。本文件适用于IEC 60034-1范围内额定用于市电运行的DC电机以及各种尺寸的交流同步电机和感应电机。这些方法可以应用于其他类型的机器，例如旋转转换器、交流换向器电机和单相感应电机。本第三版取消并取代了2014年发布的IEC 60034-2-1第二版。与上一版相比，此版本包括以下重大技术变更: -布局和要求与IEC 60034-2-2和IEC 60034-2-3协调。

IEC 60034-2-1:2024 is available as IEC 60034-2-1:2024 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60034-2-1:2024 is intended to establish methods of determining efficiencies from tests, and also to specify methods of obtaining specific losses. This document applies to DC machines and to AC synchronous and induction machines of all sizes within the scope of IEC 60034-1 rated for mains operation. These methods may be applied to other types of machines such as rotary converters, AC commutator motors and single-phase induction motors. This third edition cancels and replaces the second edition of IEC 60034-2-1 published in 2014. This edition includes the following significant technical changes with respect to the previous edition:
- Harmonization of layout and requirements with IEC 60034-2-2 and IEC 60034-2-3.