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Search Publications by: Thomas L. Nelson (Fed)

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Displaying 26 - 30 of 30

A System to Measure Current Transducer Performance

July 1, 1998
Author(s)
Bryan C. Waltrip, Thomas L. Nelson
A special purpose ac current transducer measurement system capable of intercomparing transducers with ac output voltage ratios from 1:1 to 50:1 has been developed to extend the range and accuracy of current transformer, current shunt, and mutual inductor

Extension of Voltage Range for Power and Energy Calibrations

July 1, 1998
Author(s)
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

Power and Energy Measurements at NIST

July 1, 1998
Author(s)
Thomas L. Nelson
The NIST calibration service that provides electric energy traceability for the U.S. utility industry is described. Electronic watthour meters, submitted for test, are measured using the NIST Power Bridge, in which complex ac power is defined in terms of