AC and DC shunts - can you believe their specs?

Author

Destefan, Dennis E. ; Stant, Robert S. ; Ramboz, John D.

Author_Institution

High Current Technol. Inc., Broomfield, CO, USA

Volume

2

fYear

2003

Firstpage

1577

Abstract

Little new information regarding high current shunts (greater than 100 A), especially ac shunts, has been published in the last 30 years to the authors knowledge. Since the advent of new measurement capabilities, sensors, and lower uncertainties, recent findings regarding the performance of ac and dc shunts are presented. The findings are significant for users and calibration laboratories. Errors due to current feed-point selection, ac/dc difference, frequency response, the proximity effects of ferromagnetic materials, and the effects of nearby conductors are discussed. Factors that must be included in the determination of measurement uncertainty are provided and discussed.

Keywords

calibration; electric current measurement; ferromagnetic materials; frequency response; measurement errors; measurement uncertainty; proximity effect (superconductivity); 4-terminal resistors; AC shunts; DC shunts; ac/dc difference; alternating current measurement; calibration; current feed-point selection; direct current measurement; ferromagnetic materials; frequency response; high current shunts; measurement uncertainty; proximity effects; pulsed current; Calibration; Current measurement; Electrical resistance measurement; Frequency; Pulse measurements; Resistors; Steady-state; Temperature; Thermal resistance; Thermoelectricity;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2003. IMTC '03. Proceedings of the 20th IEEE

ISSN

1091-5281

Print_ISBN

0-7803-7705-2

Type

conf

DOI

10.1109/IMTC.2003.1208015

Filename

1208015