Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on the Arc Characteristics and Diagnosis of Electrical Contacts for Power due to Environmental Degree

환경오염도에 따른 전력용 전기접점의 아-크특성 및 진단에 관한 연구

  • Lee, Jong-Ho (Dept. of Electrical Engineering, University of Ulsan) ;
  • Hwang, Young-Han (Dept. of Electrical Engineering, University of Ulsan) ;
  • Park, Hong-Tae (Dept. of Electrical Engineering, University of Ulsan) ;
  • Lee, Kwang-Jin (Dept. of Electrical Engineering, University of Ulsan)
  • 이종호 (울산대학교 전기공학과) ;
  • 황영한 (울산대학교 전기공학과) ;
  • 박홍태 (울산대학교 전기공학과) ;
  • 이광진 (울산대학교 전기공학과)
  • Published : 1994.11.18
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Abstract

This paper deals with the on off arc characteristics of electromagnetic relay contacts contaminated by NaCl and $H_2SO_4$. In this paper, I have studied the characteristics of on-off voltage waveform. the contact errosion, contact surface analysis by SEM and EDAX under changed R-L parameter of testing circuit. After considers these result, I have tried to promote the diagnosis method and developed the contacts. As a results, (1) The arc duration and the numbers of arc occurrence characteristics are depended on contamination degree. The contamination degree is high when the arc characteristics is high. (2) Under clean condition, arc occurrence voltage, surge peak voltage, arc duration and the rate of contact errosion is lower than wet condition. (3) Surge peak voltage and arc duration is depended on L parameter. When L is High, the arc characteristics is high.

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