弧焊设备 第4部分：定期检查和测试

[中文适用范围]： 本部分 IEC 60974 规定了定期检查和维修后的测试程序，以确保电气安全。这些测试程序也适用于维护。 本文件适用于根据 IEC 60974-1 或 IEC 60974-6 设计的电弧焊接和相关工艺的电源。根据 IEC 60974 其他部分设计的独立辅助设备可以根据本部分 IEC 60974 的相关要求进行测试。 本文件包括对电池供电的电弧焊接电源的要求，这些要求见附录 D。 注 1：焊接电源可以与任何可能影响测试结果的辅助设备一起测试。 本文件不适用于新电源或发动机驱动电源的测试。 注 2：对于未按照 IEC 60974-1 制造的电源，请参见附录 C。 [外文原描述]： IEC 60974-4:2025 specifies test procedures for periodic inspection and, after repair, to ensure electrical safety. These test procedures are also applicable for maintenance. This document is applicable to power sources for arc welding and allied processes designed in accordance with IEC 60974-1 or IEC 60974-6. Stand-alone ancillary equipment designed in accordance with other parts of IEC 60974 can be tested in accordance with relevant requirements of this part of IEC 60974. This document includes requirements for battery-powered arc welding power sources, which are given in Annex D. NOTE 1 The welding power source can be tested with any ancillary equipment fitted that can affect the test results. This document is not applicable to testing of new power sources or engine-driven power sources. NOTE 2 For a power source not built in accordance with IEC 60974-1, see Annex C. This fourth edition cancels and replaces the third edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - examples for the measurements in respect of EN 50699, - consideration of measuring equipment in respect of IEC 61557 series, - more determinations of no-load voltage for welding equipment built according to IEC 60974-1:1998 and IEC 60974-1:1998/AMD1:2000 or earlier, - new Annex D providing additional information to be considered when testing battery-powered welding power sources and connected chargers.