Title :
Analysis and improvements of precision coaxial current shunts for direct measurement of ac current
Author :
Lapuh, R. ; Pinter, B. ; Voljc, B. ; Svetik, Z. ; Lindic, M.
Author_Institution :
Slovenian Inst. for Quality & Metrol., Metrol. Inst. of the Republic of Slovenia, Ljubljana, Slovenia
Abstract :
Coaxial current shunts for currents from 10 mA to 20 A have been constructed. They have been calibrated for AC/DC current difference at frequencies up to 30 kHz. A lumped element model was made for each shunt, from which a frequency response and input impedance were derived. Comparison to actual measured frequency response and measured input impedance results show good agreement of the developed model.
Keywords :
electric current measurement; electric impedance measurement; frequency measurement; frequency response; AC current direct measurement; AC-DC current difference; coaxial current shunt; current 10 mA to 20 mA; frequency response measurement; input impedance measurement; lumped element model; Current measurement; Frequency measurement; Frequency response; Impedance; Resistance; Resistors; Uncertainty; ac current; ac-dc difference; coaxial shunt; frequency response; modelling;
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC), 2011 IEEE
Conference_Location :
Binjiang
Print_ISBN :
978-1-4244-7933-7
DOI :
10.1109/IMTC.2011.5944186
