Based on the actual needs of low-voltage distribution network insulation, this paper discussed the design of the digital mega-ohm meter for train based on the single chip microprocessor.

• 摘要基于低压配电网绝缘检测的实际需求，研制了一种基于单片机的手持数字式列车绝缘检测仪（数字兆欧表）。