KRISS-NRC Intercomparisons of Calibration Systems for Instrument Transformers With Many Different Ratios at Power Frequency

Author

Jung, Jae Kap ; So, Eddy ; Park, Young Tae ; Kim, Myungsoo

Author_Institution

Korea Res. Inst. of Stand. & Sci., Daejeon

Volume

58

Issue

4

fYear

2009

fDate

4/1/2009 12:00:00 AM

Firstpage

1023

Lastpage

1028

Abstract

An intercomparison of the calibration systems for instrument transformers between the Korea Research Institute of Standards and Science (KRISS) and the National Research Council of Canada (NRC), with many different ratios at 60 Hz, was performed using six portable transfer standards. The portable transfer standards consist of two current transformers (CTs) with current ratios of 5 A/5 A up to 20 000 A/5 A and four voltage transformers (VTs) with voltage ratios of 110 V/110 V up to 66 000 V/110 V. The comparison results for the CT calibration systems between the two institutes are in good agreement within 10times10^-6 for ratio and 10 murad for phase for all the current ratios. The comparison results for the VT test systems also indicated good agreement within 35times10^-6 for ratio and 35 murad for phase for all voltage ratios.

Keywords

calibration; current transformers; instrument transformers; potential transformers; KRISS-NRC; Korea Research Institute of Standards and Science; National Research Council of Canada; calibration systems; current ratios; current transformers; frequency 60 Hz; instrument transformers; portable transfer standards; voltage ratios; voltage transformers; Current transformer (CT); expanded uncertainty; high voltage; instrument transformer; intercomparison; phase displacement; ratio error; voltage transformer (VT);

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2008.2006966

Filename

4689395