A new self-calibrating instrument for voltage transformer calibration

Author

Zoltan, I.

Author_Institution

Dept. of Meas. & Instrum. Eng., Tech. Univ. Budapest, Hungary

fYear

1996

fDate

17-21 June 1996

Firstpage

488

Lastpage

489

Abstract

A new current comparator and digital ratio-meter based self-calibrating instrument for voltage transformer calibration has been developed at the Technical University of Budapest. The instrument measures the in-phase and quadrature components of the complex error by means of a digital ratio-meter. The built-in programmable analog signal processor facilitates comparison and direct calibration of voltage transformers of different ratios. Advanced hardware and software technology ensure complete on-site self-calibration of the instrument. The basic accuracy of the instrument is /spl plusmn/2 ppm with 1 ppm resolution.

Keywords

calibration; current comparators; potential transformers; power transformer testing; production testing; current comparator; digital ratio-meter; direct calibration; in-phase components; on-site self-calibration; programmable analog signal processor; quadrature components; self-calibrating instrument; voltage transformer calibration; Application specific processors; Calibration; Hardware; Instruments; Power measurement; Resistors; Signal processing; Testing; Voltage control; Voltage transformers;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements Digest, 1996 Conference on

Conference_Location

Braunschweig, Germany

Print_ISBN

0-7803-3376-4

Type

conf

DOI

10.1109/CPEM.1996.547179

Filename

547179