Modified Step-Up Technique for the DC High Voltage Traceability

The DC high voltage is usually measured with high voltage divider which plays the role of the ratio standard linking the unknown high voltage (HV) to the well-known low voltage standard. Step-up method had been proposed to link the HV measurements to the low voltage standard. This paper describes the improved step-up technique, which employs an additional source voltage monitoring device. The monitoring tool has been successfully applied for the step-up techniques to determine the dividing ratios of the high voltage dividers up to 100 kV.