What Is The Acceptable Megger Reading For A Motor?

What Is The Acceptable Megger Reading For A Motor? The rule may be stated: Insulation resistance should be approximately one megohm for each 1,000 volts of operating voltage, with a minimum value of one megohm. For example, a motor rated at 2,400 volts should have a minimum insulation resistance of 2.4 megohms. What is the