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Dive into the research topics where Jae-Kap Jung is active.

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Featured researches published by Jae-Kap Jung.


conference on precision electromagnetic measurements | 2010

Loading effect of the AC-DC transfer standard for low level AC voltage standard

Sung-Won Kwon; Mun-Seog Kim; K.-T. Kim; Jae-Kap Jung

AC-DC transfer standard and micro-potentiometer are widely used for AC voltage standard at low level. Input impedance and 50-Ω load dependency of the standard are discussed for the ac voltage application below 200 mV and 1 MHz. The load dependency of the unit reaches 385 µV/V at 1 MHz, and this loading error should be corrected when calibrate the 50-Ω AC source using the standard.


Journal of Sensor Science and Technology | 2005

Development of an automatic measurement system for the AC-DC current transfer difference of the thermal current converter

Sung-Won Kwon; Jae-Kap Jung; Mun-Seog Kim; Kye-Tae Kim; Je-Cheon Ryu

We have developed a dual-channel type automatic measurement system to evaluate AC-DC current transfer difference of the thermal current converter(TCC) which is primary standard of AC current. The output drift effect of the TCC is minimized by measuring simultaneously the output voltages of two TCCs using voltmeter. Furthermore, the offset voltage of the voltmeter is cancelled nearly out by taking the average values of two outputs of TCCs measured with the forward-reverse directions using dual channel scanner. The uncertainties of the automatic system were 7 to for 3 mA to 10 A at 40 Hz to 20 kHz, which were evaluated by the comparisons between adjacent range of TCCs and inter-comparison with national measurement institute of Germany(PTB). The capability for ac-dc transfer difference measurement was improved by one order compared with that for the manual ac-dc measurement system.


The Transactions of the Korean Institute of Electrical Engineers | 2007

ON-SITE EVALUATION TECHNIQUE OF CURRENT TRANSFORMER COMPARATOR SYSTEM

Jae-Kap Jung; Sang-Hwa Lee; Sung-Won Kwon; Jeon-Hong Kang; Myungsoo Kim


The Transactions of the Korean Institute of Electrical Engineers | 2009

Establishment of Evaluation System for 40,000 A Rogowski Coil

Yoon-Hyoung Kim; Sang-Gil Han; Jae-Kap Jung; Jeon-Hong Kang; Sang-Hwa Lee; Sang-Ok Han


The Transactions of the Korean Institute of Electrical Engineers | 2009

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

Yoon-Hyoung Kim; Sang-Gil Han; Jae-Kap Jung; Sang-Ok Han


The Transactions of the Korean Institute of Electrical Engineers | 2008

Fabrication and Evaluation of AC 400 kV High Voltage Divider using Electric Field Sensor

Sang-Hwa Lee; Sang-Gil Han; Jae-Kap Jung; Jeon-Hong Kang; Yoon-Hyoung Kim; Jin-Hye Jeong; Sang-Ok Han


The Transactions of the Korean Institute of Electrical Engineers | 2008

Evaluation for Ratio Error of Voltage Transformer Comparator using Standard Resistors

Sang-Gil Han; Yoon-Hyoung Kim; Jae-Kap Jung; Sang-Ok Han


The Transactions of the Korean Institute of Electrical Engineers | 2008

Establishment of National Standard System for 20.000 A Current Transformer

Jae-Kap Jung; Sang-Hwa Lee; Jean-Hong Kang; Myungsoo Kim; Yoon-Hyoung Kim; Sang-Gil Han; Sang-Ok Han


The Transactions of the Korean Institute of Electrical Engineers | 2008

Extension of Absolute Evaluation Technique for Ratio Error and Phase Displacement of Core Type Current Transformers: Ip =

Yoon-Hyoung Kim; Sang-Gil Han; Jae-Kap Jung; Sang-Ok Han


The Transactions of the Korean Institute of Electrical Engineers | 2008

5\;kA{\sim}40\;kA

Yoon-Hyoung Kim; Sang-Gil Han; Jae-Kap Jung; Sang-Ok Han

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Myungsoo Kim

Korea Research Institute of Standards and Science

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Sung-Won Kwon

Korea Research Institute of Standards and Science

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Mun-Seog Kim

Pohang University of Science and Technology

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Jong-Man Joung

Gyeongsang National University

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K.-T. Kim

Korea Research Institute of Standards and Science

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