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Extension of Voltage Range for Power and Energy Calibrations



O. Petersons, Thomas L. Nelson, Nile M. Oldham, Gerald FitzPatrick


A special purpose ac voltage divider system having voltage ratios of 600 V, 480 V, 360 V, and 240 V to 120 V has been developed to extend the voltage range of primary electric power calibrations from 120 volts to 600 volts at power frequencies of 50 and 60 Hz. The system consists of a special two-stage resistive divider compensated with an active circuit, thereby reducing the error contributions to below 1 5V/V. The developmental goal to realize ac voltage scaling within 5 5V/V uncertainty in a device verifiable with dc resistance ratio measurements has been attained.
Proceedings Title
Proc., Conference on Precision Electromagnetic Measurements (CPEM)
Conference Dates
July 6-10, 1998
Conference Location
Washington, DC


active voltage divider, power bridge, voltage measurement, precision measurement


Petersons, O. , Nelson, T. , Oldham, N. and FitzPatrick, G. (1998), Extension of Voltage Range for Power and Energy Calibrations, Proc., Conference on Precision Electromagnetic Measurements (CPEM), Washington, DC, [online], (Accessed June 15, 2024)


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Created June 30, 1998, Updated October 12, 2021