Calibration methods of a CC and BCG for a high-accuracy AC current ratio standard up to 4 kHz

Author

Yamada, Tomoaki ; Kon, S.

Author_Institution

Electr. & Magn. Div., AIST/NMIJ, Tsukuba, Japan

fYear

2014

fDate

24-29 Aug. 2014

Firstpage

728

Lastpage

729

Abstract

This paper describes calibration methods of current comparators (CCs) and balancing current generators (BCGs) accompanied with them, for establishing a high-accuracy ac current ratio standard up to 4 kHz. The CC calibration is explained mathematically according to the self-calibration procedure that NMIJ has been exploiting. The BCG calibration is based on measurement of the conversion ratio. The technique with a CC and CT is unique in terms of the fact that the uncertainty can be ignored against the CT calibration.

Keywords

calibration; current comparators; electric current measurement; mathematical analysis; measurement standards; BCG; CC; NMIJ; balancing current generator; calibration method; conversion ratio measurement uncertainty; current comparator; high-accuracy AC current ratio standard; mathematical analysis; Calibration; Current measurement; Current transformers; IEC standards; Uncertainty; Windings; Current transformer; ac current ratio standards; current comparator; self calibration;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on

Conference_Location

Rio de Janeiro

ISSN

0589-1485

Print_ISBN

978-1-4799-5205-2

Type

conf

DOI

10.1109/CPEM.2014.6898592

Filename

6898592