Abstract：Voltage division and subtraction of low-voltage side was used in the DC high voltage dividers measurement.It was generelly assumed that digital multimeter imput impedance has certain effects on the measurement,so far the assuming was lack of theory basis and experimental datas.To prove the assuming, an experiment is carried out and sereval valuable data is presented.Further more,an impact factor of the measurment effect is given out by building the methemetical model, and a revised method is proposed to amend the measurment.The contrast experiment proves that the bias of corrected result is better than 0.01%.
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2023, Vol. 44 
