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

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
권호 표지
DOI QR코드

DOI QR Code

Characteristic Analysis of a Ex Circuit of Ex LED Signal Lamp Operating with AC/DC 12~254 V

AC/DC 12~254 V로 동작하는 방폭 LED Signal Lamp용 방폭 회로의 특성 분석

  • Jeong, Min-Joo (LED Convergence Engineering, Specialized Graduate School Science and Technology Convergence Pukyong National University) ;
  • Her, In-Sung (LED Convergence Engineering, Specialized Graduate School Science and Technology Convergence Pukyong National University) ;
  • Kang, In-Cheol (ELSCOM, Inc.) ;
  • Yu, Young-Moon (LED Convergence Engineering, Specialized Graduate School Science and Technology Convergence Pukyong National University)
  • 정민주 (부경대학교 과학기술융합전문대학원 LED융합공학전공) ;
  • 허인성 (부경대학교 과학기술융합전문대학원 LED융합공학전공) ;
  • 강인철 ((주)엘스콤) ;
  • 유영문 (부경대학교 과학기술융합전문대학원 LED융합공학전공)
  • Received : 2014.10.13
  • Accepted : 2014.10.24
  • Published : 2014.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we develop a explosion-proof LED lighting (Ex circuit) circuit of Explosion-proof LED Signal Lamp (Ex LSL) to utilize the core module of the explosion-proof Local Control System (Ex LCS) for offshore plant applications. And then analyzed its electrical, optical and thermal characteristics. Ex circuit was applied input voltage from AC/DC(12~254) V. In this experiments, stable light-on characteristics were confirmed by eyes for the every input voltages with min. 78,462 and max. $517,975cd/m^2$ of luminance. also Output current and output luminance was made proportional. Because the measured maximum surface temperature of Ex circuit was $54.23^{\circ}C$ at AC 48 V, Ex circuit was rated with T6 of temperature class. Finally, Ex circuit was shown stable light on characteristics under the $-50^{\circ}C$ and $60^{\circ}C$ during 12 hours of test period.

Keywords

References

  1. K. W. Seo, H. D. Joo, and S. J. Park, Journal of the KSME, 52, 30 (2012).
  2. K. J. Jin, J. W. Lee, and S. D. Lee, Bulletin of the Society of Naval Architects of Korea, 38, 39 (2001).
  3. K. J. Soo, Journal of the KSME, 53, 28 (2013).
  4. I. Jeong, Journal of the KSME, 52, 36 (2012).
  5. C. S. Cho, Proc. of KIIEE Annual Conference, 171 (2011).
  6. G. H. Lee and S. W. Cho, World of Electrical, 42, 48 (1993).
  7. C. S. Cho and Y. H. Jeong, Proc. of KIIEE Annual Conference, 167 (2012).
  8. Explosive Atmospheres-Part 0 : Equipment-General Requirements, KS C IEC 60079-0:2007.
  9. Explosive Atmospheres- Part 1 : Equipment Protection by Flameproof Enclosures 'd', KS C IEC 60079-1:2012.