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KRISS-NRC intercomparisons of calibration systems for instrument transformers with many different ratios at power frequency

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4 Author(s)
Jae Kap Jung ; Korea Res. Inst. of Stand. & Sci., Daejeon, South Korea ; So, E. ; Young Tae Park ; Myungsoo Kim

An intercomparison of calibration systems for instrument transformers between Korea Research Institute of Standards and Science (KRISS) and National Research Council of Canada (NRC) with many different ratios at 60 Hz was performed using six portable transfer standards consisting 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 instrument transformers calibration systems between the two institutes are in good agreement within the corresponding expanded uncertainties for all current and voltage ratios.

Published in:

Precision Electromagnetic Measurements Digest, 2008. CPEM 2008. Conference on

Date of Conference:

8-13 June 2008