Title :
Comparison of AC current ratio standards in the range up to 4 kA
Author :
Styblikova, R. ; Draxler, K. ; Dimitrov, Emil ; Kumanova, Ginka ; Dierikx, Erik
Author_Institution :
Dept. of Electromagn. Quantities, Czech Metrol. Inst., Prague, Czech Republic
Abstract :
Measurements were carried out at the Czech Metrology Institute (CMI) and at the Bulgarian Institute of Metrology (BIM) in the range of transformation ratios up to (0.5 - 4 000) A/5 A, and the results were compared. Attention focused on the results in the range (1 up to 4) kA/5 A when the primary winding was formed by one conductor. This paper presents the results of the comparison. The influence of the position of the primary conductor in the magnetic circuit of the transformer is particularly described. The impact of the stability of the magnetic parameters of the core of the instrument current transformer (ICT) on the measurement results is also discussed.
Keywords :
current transformers; magnetic circuits; transfer standards; AC current ratio standards; Bulgarian Institute of Metrology; Czech Metrology Institute; current 5 A; instrument current transformer; magnetic circuit; magnetic parameter stability; primary conductor; transfer standards; transformer; Automatic testing; Conductors; Current measurement; Current transformers; Displacement measurement; Electrical resistance measurement; Measurement standards; Metrology; Phase measurement; System testing;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2010 Conference on
Conference_Location :
Daejeon
Print_ISBN :
978-1-4244-6795-2
DOI :
10.1109/CPEM.2010.5543402
