IEC 60974-3:20 19规定了弧焊和相关工艺中使用的工业和专业引弧和电弧稳定装置的安全要求。 本文件适用于独立（与焊接设备分开）或内置（与其他弧焊设备一起安装在单个外壳中）的电弧撞击和稳定装置。 第四版取消并取代了2013年出版的第三版，构成技术修订。 与上一版相比，此版本包括以下重大技术变更: -IEC 60974-1:20 17的发布引起的变化； -参考第2条中的IEC 60974-1:20 17/AMD1:2019； -图2被更新，其中示出了空载电压的比例的减法； -11.5中关于电弧撞击和稳定装置发生故障时安全操作的要求； -IEC 60974-1:20 17第15条中对额定值板的要求。

IEC 60974-3:2019 specifies safety requirements for industrial and professional arc striking and arc stabilizing devices used in arc welding and allied processes.
This document is applicable to arc striking and stabilizing devices which are stand-alone (separate from the welding equipment) or built in (housed in a single enclosure with other arc welding equipment).
This fourth edition cancels and replaces the third edition published in 2013 and constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- changes induced by the publication of IEC 60974-1:2017;
- reference to IEC 60974-1:2017/AMD1:2019 in Clause 2;
- Figure 2 is updated where a subtraction of the proportion of the no-load voltage is shown;
- requirement for safe operation of the arc striking and stabilising devices in the event of failure, in 11.5;
- requirements for the rating plate as in IEC 60974-1:2017, Clause 15.