The direct-current leakage test is implemented by using the microampere shielded in low-voltage, and the leakage current increasing of generator stator winding abnormally is detected.
采用低压屏蔽法对发电机定子绕组进行直流泄漏试验，发现泄漏电流异常增大。
2
The problems on painting craft of armature winding of mini-directcurrent dynamo are analyzed, new roll painting crafts are introduced, and properties of the crafts are concluded.
分析微型直流电机电枢绕组传统滚漆工艺的存在问题，介绍电枢滚漆新工艺，并总结了该工艺的特。
3
The direct measure mode is that Hall part is set into the interspace of loop winding or magnet coil, then the magnetism voltage difference or the current is measured.