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三、焊机修理后的电气性能测试与调整修理后的焊机应能满足焊接和使用安全要求。因此,必须对焊机的有关技术性能指标进行测试,其基本的测试项目如下: 1.绝缘电阻测量: 用500伏摇表(兆欧表)对电动机三相绕组对地、相与相间进行测量,一般绝缘电阻应大于1 MΩ。发电机部分,他激绕组,电枢回路对地及他激与串激绕组之间的绝缘电阻应大于0.5MΩ。其他控制回路绝缘电阻考核按相应电压
Third, the electrical performance test after welding repairs and adjustments After repairing the welder should be able to meet the safety requirements of welding and use. Therefore, we must test the technical performance of the welding machine, the basic test items are as follows: 1. Insulation resistance measurement: 500 volt shake table (megger) on the motor three-phase winding on the ground, phase and phase measurements , General insulation resistance should be greater than 1 MΩ. Generator part, he excited winding, armature circuit to ground and his excitement and string winding insulation resistance should be greater than 0.5MΩ. Other control circuit insulation resistance assessment by the appropriate voltage