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

fYear

2010

fDate

13-18 June 2010

Firstpage

663

Lastpage

664

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM), 2010 Conference on

Conference_Location

Daejeon

Print_ISBN

978-1-4244-6795-2

Type

conf

DOI

10.1109/CPEM.2010.5543402

Filename

5543402