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ISSN:2394-3661 | Crossref DOI | SJIF: 5.138 | PIF: 3.854

International Journal of Engineering and Applied Sciences

(An ISO 9001:2008 Certified Online and Print Journal)

Comparison of Results of Calibration of Isolation Current Transformer by Conventional Method & Two Power Comparator Method

( Volume 2 Issue 1,January 2015 ) OPEN ACCESS
Author(s):

M. K. Mittal, J.C.Biswas , K.P.S.Yadav, A.S.Yadav, L.Sridhar, Manish Tamrakar, Shrikishan, R.P.Agarwal, S. S. Rajput

Abstract:

This paper describes the calibration of Isolation Current Transformer by two methods, by conventional method and by two comparator based calibration method. A conventional method has limitations that we get fixed ratios and hence can go up to lower value of 1A. The uncertainties of the calibration system are in the order of 0.005 % for the ratio error and 0.01 crad for the phase displacement of the current transformer at 50 Hz. The power comparator based measurements can be done at test currents from 10 mA to 160A.

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