直流发电机作出厂试验时必须通过空载、负载及电动试验,在空载与负载试验时要有专用的无级变速机构带动发电机旋转,但一般的修理单位无上述设备,通常是将经过维修的发电机作电动运转,观察发电机是否平稳旋转,如果符合要求就装车试验。有时发电机虽然通 DC generator factory test must pass no-load, load and electric test, no-load and load test to have a special stepless speed change mechanism to drive the generator to rotate, but the general repair unit without the above equipment, usually through Maintenance of the generator for electric operation, observe whether the generator rotates smoothly, if meet the requirements on the loading test. Although sometimes the generator pass