Title :
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, South Korea
Abstract :
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.
Keywords :
calibration; current transformers; instrument transformers; measurement uncertainty; portable instruments; power measurement; transfer standards; KRISS; Korea Research Institute of Standards and Science; NRC; National Research Council of Canada; current 20000 A; current 5 A; current transformer; frequency 60 Hz; instrument transformer; measurement uncertainties; portable transfer standard; power measurement; transformer calibration system; voltage 110 V; voltage 66000 V; voltage transformer; Calibration; Capacitors; Councils; Current measurement; Current transformers; Displacement measurement; Frequency; Instrument transformers; Low voltage; System testing;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2008. CPEM 2008. Conference on
Conference_Location :
Broomfield, CO
Print_ISBN :
978-1-4244-2399-6
Electronic_ISBN :
978-1-4244-2400-9
DOI :
10.1109/CPEM.2008.4574663
