Title :
50 Hz current measurements with Rogowski coils
Author :
Rautiainen, A. ; Helisto, P. ; Mansten, T. ; Seppa, H.
Author_Institution :
Microsensing, VTT Inf. Technol., Finland
Abstract :
The applicability of Rogowski coils for high precision measurements of 50 Hz currents is studied. In the set-up, Rogowski coils serve as current sensors and the amplitude and phase are determined with a sampling voltmeter. Another measurement channel enables current ratio and electrical power measurements. Preliminary expanded uncertainties are of the order of 30 ppm in current and 40 /spl mu/rad in phase.
Keywords :
coils; electric current measurement; electric sensing devices; measurement uncertainty; power measurement; power system measurement; signal sampling; voltmeters; 50 Hz; Rogowski coils; current amplitude; current measurements; current phase; current ratio measurements; current sensors; electrical power measurements; measurement channel; measurement uncertainty; sampling voltmeter; Coils; Conductors; Current measurement; Current transformers; Electric variables measurement; Magnetic field measurement; Power measurement; Sampling methods; Temperature sensors; Time measurement;
Conference_Titel :
Precision Electromagnetic Measurements, 2002. Conference Digest 2002 Conference on
Conference_Location :
Ottawa, Ontario, Canada
Print_ISBN :
0-7803-7242-5
DOI :
10.1109/CPEM.2002.1034806
