电弧焊接设备 - 第3部分:弧形和稳定设备

[中文适用范围]： 本部分IEC 60974规定了用于电弧焊及相关工艺的工业和专业用引弧和稳弧设备的安全要求。本文件适用于独立（与焊接设备分离）或内置（与其他电弧焊设备 housed 在同一外壳内）的引弧和稳弧设备。注1：典型的关联工艺包括等离子弧切割和电弧喷涂。注2：本文件不包括电磁兼容性（EMC）要求。 [外文原描述]： 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.