Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Design for a Fuse of High Durability Protection Elements for Improving the Safety of DC Current Measurement Device

직류전류측정기의 안전성 향상을 위한 고내구성 보호소자의 가용체 설계

  • Lee, Ye Ji (Graduate School of Management of Technology, Pukyong National University) ;
  • Youn, Jae Seo (Graduate School of Management of Technology, Pukyong National University) ;
  • Cho, Sung Chul (Development Team, R4S) ;
  • Noh, Sung Yeo (Department of Port Logistics System, Tongmyong University)
  • 이예지 (부경대학교 기술경영학과) ;
  • 윤재서 (부경대학교 기술경영학과) ;
  • 조성철 (알포에스 개발팀) ;
  • 노성여 (동명대학교 항만물류시스템공학과)
  • Received : 2019.12.26
  • Accepted : 2020.01.10
  • Published : 2020.05.01
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Abstract

With the expansion in the use of DC power systems and increased need for system maintenance, the development of measurement devices for maintenance requires high stability. Of the different kinds of DC current measurement devices, the single-shot measurement device causes the input signal of the current measuring unit to initially generate a high inrush current. The high inrush current flows into the signal processor of the meter, shortening the life of the internal fuses and causing failure. Therefore, in this study, the I2t value for increasing the durability of the fuse is designed using the available wire diameter. Operating characteristics for 210~400% over-current of the rated current, which is relatively low over-current, are realized by the plating of low melting tin metal. As a result, a method of designing a fuse element for a DC power supply, which improves the safety of the DC current measurement device by blocking the failure caused by the inrush current, is presented.

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References

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