Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Analysis of the Insulation Resistance Trend according to the Installation Environment of the Electric Wiring of the Melting Furnace

용해로 전기배선의 설치환경에 따른 절연저항 추이 분석

  • Suk Bong Ko (Korea Industrial Safety Association) ;
  • Doo-Hyun Kim (Department of Safety Engineering, Chungbuk National University) ;
  • Sung-Chul Kim (Department of Safety Engineering, Chungbuk National University)
  • Received : 2022.12.28
  • Accepted : 2023.04.18
  • Published : 2023.04.30
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Abstract

In this study, the process and the environment of a melting furnace, located in Workplace A in Chungnam Province was inspected, and the insulation resistances of electrical circuits and motors were measured, and their changes over five years (2017-2021) were analyzed. It was found that the exhaust fan, oil pumps #A and #B, and heater were installed in 2010. Their insulation resistances decreased from 2017. Specifically, the insulation resistance of Oil Pump #A decreased from 100 (㏁) in 2018 to 20(㏁) in 2021, an 80% reduction. The fast decrease in insulation resistance was due to the high temperature of the melting furnace affecting surrounding the electrical facilities. A safety management scheme on the electrical facility of the melting furnace was proposed.

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References

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