电弧焊设备.第4部分:定期检修和试验

[中文适用范围]： IEC 60974 的这一部分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。本标准适用于按照 IEC 60974-1 或 IEC 60974-6 设计的电弧焊及相关工艺电源。按照IEC 60974其他部分设计的独立辅助设备可按照IEC 60974本部分的相关要求进行测试。本标准不适用于新型电源或发动机驱动电源的测试。 [外文原描述]： IEC 60974-4:2010 specifies test procedures for periodic inspection and, after repair, to ensure electrical safety. These test procedures are also applicable for maintenance. This standard 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 part of IEC 60974 may be tested in accordance with relevant requirement of this part of IEC 60974. This second edition cancels and replaces the first edition published in 2006. It constitutes a technical revision. The main significant technical changes with respect to the previous edition are the following: - title is amended; - scope is extended to equipment designed in accordance with IEC 60974-6; - complementary instructions from the manufacturer shall be followed; - qualification of test personnel is clarified (see 4.1); - plasma cutting power sources are excluded from no-load voltage test (see 5.6); - voltage reducing device functional test is simplified (see 6.3); - supply voltage is recorded in test report (see 7.1).