The Transactions of the Korean Institute of Electrical Engineers P (전기학회논문지P)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Secondary Current Range Extension of Current Transformers by Using Two Different Current Transformers and Absolute Evaluation Technique

전류변성기 두 대와 절대 평가 기술을 이용한 2차 전류 범위 확장

  • Published : 2009.03.01
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Abstract

We have developed a current range extension method to obtain the ratio error and phase displacement of a current transformer (CT) by using absolute evaluation method and two different CTs. The method was applied to CTs under test with the current ratios in the range of 5,000 A / 1 A - 20,000 A / 1 A. The ratio error and phase displacement of the CT under test obtained in this study are consistent with those measured at the national institute in Germany using the same CT under test within an expanded uncertainty (k = 2) in the overall current ratios.

Keywords

References

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