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Extension of Absolute Evaluation Technique for Ratio Error and Phase Displacement of Core Type Current Transformers: Ip =$5\;kA{\sim}40\;kA$  

Kim, Yoon-Hyoung (충남대학교 전기공학과)
Han, Sang-Gil (충남대학교 전기공학과)
Jung, Jae-Kap (한국표준과학연구원)
Han, Sang-Ok (충남대학교 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers P / v.57, no.4, 2008 , pp. 431-436 More about this Journal
Abstract
We have extended an absolute evaluation method to obtain the ratio error and phase displacement of a current transformer (CT) up to primary current of 40,000 A by measuring four parameters of equivalent circuit in CT. The method was applied to CTs under test with the current ratios in the range of 5,000 A / 5 A - 40,000 A / 5 A. The ratio error and phase displacement of the CTs under test obtained in this study are consistent with those measured at the national institutes in Canada and Germany using the same CTs under test within an expanded uncertainty (k = 2) in the overall current ratios.
Keywords
Current Transformer; CT Test System; Ratio Error; Phase Displacement; Current Comparator;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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