The paper introduces the saturable magnetic circuit method to measure the DC resistance of low voltage winding of large-size transformer with a practical application.

• 介绍了一例用助磁法测量大型变压器低压侧直流电阻的接线、仪器、测试过程和测试结果,讨论了助磁法运用于实际应注意的一些问题。