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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 with ratios of 600, 480, 360, 277, and 240 V to 120 V has been developed to extend the range of primary electric power calibrations from 120-600 V at 50 and 60 Hz. The developmental goal has been to realize ac voltage scaling within 55 V/V overall relative uncertainty. By employing a technique consisting of a special two-stage resistive divider compensated with an active circuit, the overall uncertainty achieved after calibration is 45 V/V.
IEEE Transactions on Instrumentation and Measurement


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


Petersons, O. , Nelson, T. , Oldham, N. and FitzPatrick, G. (1999), Extension of Voltage Range for Power and Energy Calibrations, IEEE Transactions on Instrumentation and Measurement, [online], (Accessed April 18, 2024)
Created March 31, 1999, Updated October 12, 2021