To what extent can the current amplitude linearity of Rogowski coils be verified?

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DOIResolve DOI: http://doi.org/10.1109/TIM.2010.2099250
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TypeArticle
Journal titleIEEE Transactions on Instrumentation and Measurement
ISSN0018-9456
Volume60
Issue7
Article number5680646
Pages24092414; # of pages: 6
SubjectAC current measurement; Calibration uncertainty; Current amplitude; digital sampling; linearity; Power frequency; Rogowski Coil; Three orders of magnitude; Calibration; Electric coils
AbstractCalibrations of Rogowski coils at power frequencies are often performed at currents of only tens of amperes even though the coils are used at currents larger by two to three orders of magnitude, or even more. The assumption of an ideal linearity versus current amplitude is true for ideal coils. This paper addresses the question on practical significance as to what extent the current amplitude linearity of real Rogowski coils can be verified at power frequencies. For this task, several different types of Rogowski coils were evaluated using a digital sampling system, with the best calibration uncertainties (k = 2) of 50 μA/A for magnitude and 50 μrad for phase and the estimated linearity better by a factor of two or more. © 2006 IEEE.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for National Measurement Standards (INMS-IENM)
Peer reviewedYes
NPARC number21271313
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Record identifierc293bb16-2422-4ac8-803c-7442b5a345ea
Record created2014-03-24
Record modified2016-05-09
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