弧焊设备 第4部分：定期检查和试验

[中文适用范围]： IEC 60974-4:2025 RLV 包含官方的 IEC 国际标准及其红线版本。红线版本仅提供英文版本，便于您快速、直观地比较官方 IEC 标准与其前一版之间的所有变更。IEC 60974-4:2025 规定了定期检查和维修后确保电气安全的测试程序，这些测试程序也适用于维护。本文件适用于按照 IEC 60974-1 或 IEC 60974-6 设计的弧焊及相关工艺的电源。按照 IEC 60974 其他部分设计的独立辅助设备可根据本部分的相关要求进行测试。本文件包含对电池供电弧焊电源的要求，详见附录 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进行测试。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 设计的电源，请参见附录 C。第四版取消并替换了 2016 年发布的第三版。本版为技术修订版。与前一版相比，本版包含以下重大技术变更：- 关于 EN 50699 的测量示例；- 考虑 IEC 61557 系列中的测量设备；- 对根据 IEC 60974-1:1998 和 IEC 60974-1:1998/AMD1:2000 或更早版本制造的焊接设备，空载电压的更多测定；- 新增附录 D，提供关于电池供电焊接电源及其连接充电器测试时应考虑的额外信息。 [外文原描述]： IEC 60974-4:2025 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. 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.