Method for measuring shaft voltage of electric drive assembly

The invention provides a method for measuring the shaft voltage of an electric drive assembly, and the method comprises the steps: connecting a measuring head with a rotating shaft of the electric drive assembly, and enabling the measuring head to be connected with a measuring instrument; judging whether the measured environment condition accords with a set value or not; when the measured environment condition meets the set value, whether the working condition of the electric drive assembly meets the set value or not is judged; and when the measured environmental condition and the working condition of the electric drive assembly meet the set values, measuring and outputting data. According to the method for measuring the shaft voltage of the electric drive assembly, the data is measured when the measured environmental conditions and the working conditions of the electric drive assembly both meet the set values, the accuracy of the data is ensured, and preconditions are provided for how to take anti-electrocor