Title :
Improvements to the MSL mains-frequency power standard
Author :
Stewart, T.J. ; Jones, Ken
Author_Institution :
Meas. Stand. Lab. of New Zealand (MSL), Callaghan Innovation, Lower Hutt, New Zealand
Abstract :
A bridge-based mains frequency power standard has been operated at MSL for the last 16 years. Over this time there have been some improvements to the bridge components and some refinements to the procedures used for calibrating the bridge. These changes have reduced the standard uncertainty from 19 μW/W to 11 μW/W at unity power factor.
Keywords :
calibration; frequency standards; measurement uncertainty; power factor measurement; power measurement; MSL main-frequency power Standard; bridge-based main frequency power standard; calibration; standard uncertainty; unity power factor; Bridge circuits; Current measurement; Reactive power; Standards; Temperature measurement; Uncertainty; Voltage measurement; Energy standard; mains-frequency; power bridge; power standard; var; watt-hour meter calibration; wattmeter;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4799-5205-2
DOI :
10.1109/CPEM.2014.6898590
