IEC 60974-1:20 7+A1:2019适用于为工业和专业用途而设计的弧焊和相关工艺的电源，由不超过1 000 V的电压供电，由电池供电或由机械装置驱动。本文件规定了焊接电源和等离子切割系统的安全和性能要求。本文件不适用于主要为非专业人员设计并按照IEC 60974-6设计的有限负荷弧焊和切割电源。本文件包括电池供电焊接电源和电池组的要求，在附录O中给出。本文件不适用于定期维护期间或维修后的电源测试。本第五版取消并取代2012年出版的第四版，构成技术修订。与上一版相比的重大变化如下: -图1(6.1.1)的改进； -表3(6.1.4)的修改； -附件M中能源效率测量的说明； -将电池供电的焊接电源包括在范围内。因此，要求见附件O。该合并版本由第五版（2017年）及其修正案1（2019年）组成。因此，除本出版物外，无需下令修订。

IEC 60974-1:2017+A1:2019 is applicable to power sources for arc welding and allied processes designed for industrial and professional use, and supplied by a voltage not exceeding 1 000 V, battery supplied or driven by mechanical means. This document specifies safety and performance requirements of welding power sources and plasma cutting systems. This document is not applicable to limited duty arc welding and cutting power sources which are designed mainly for use by laymen and designed in accordance with IEC 60974-6. This document includes requirements for battery-powered welding power sources and battery packs, which are given in Annex O. This document is not applicable to testing of power sources during periodic maintenance or after repair. This fifth edition cancels and replaces the fourth edition published in 2012 and constitutes a technical revision. The significant changes with respect to the previous edition are the following:
– improvement of Figure 1 (6.1.1);
– modification of Table 3 (6.1.4);
– description of energy efficiency measurements in Annex M;
– inclusion of battery supplied welding power sources in the scope. Requirements therefore are described in Annex O. This consolidated version consists of the fifth edition (2017) and its amendment 1 (2019). Therefore, no need to order amendment in addition to this publication.