DocumentCode
2749752
Title
Research on high accuracy current comparator and self-calibration methods
Author
He Xiaobing ; Wang Wei ; Zhang Xin ; Dai Dongxue ; Sun Qian
Author_Institution
Nat. Inst. of Metrol., Beijing, China
fYear
2012
fDate
1-6 July 2012
Firstpage
486
Lastpage
487
Abstract
This paper introduces the working principle of a high accuracy current comparator. For reducing the error caused by the capacitive leakage current while testing current flows through the secondary winding, the secondary winding is coiled of coaxial cable. Cooperating with well shielding, changing the turns of secondary winding will not bring extra error any more. This paper also presents a new self-calibration method for 1:1 current comparator, it could be applied to multi-ratio current comparator with high accuracy and operation convenience.
Keywords
calibration; coaxial cables; current comparators; leakage currents; transformer windings; capacitive leakage current; coaxial cable; current transformer; error reduction; high accuracy current comparator; multiratio current comparator; secondary winding; self-calibration method; testing current; Accuracy; Coaxial cables; Current measurement; Leakage current; Testing; Windings; Wires; capacitive leakage; current comparator; selfcalibration;
fLanguage
English
Publisher
ieee
Conference_Titel
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location
Washington, DC
ISSN
0589-1485
Print_ISBN
978-1-4673-0439-9
Type
conf
DOI
10.1109/CPEM.2012.6251015
Filename
6251015
Link To Document