Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
권호 표지
DOI QR코드

DOI QR Code

Reliability on the Unintended Trips of Residual Current Operated Circuit Breakers due to Surge Currents

서지전류에 의한 누전차단기의 의도하지 않은 트립에 대한 신뢰성

  • 이복희 (인하대학교 IT공대 전기공학부) ;
  • 김상현 (인하 공학대학원 정보전기공학과) ;
  • 김유하 (인하대학원 전기공학과)
  • Received : 2012.04.03
  • Accepted : 2012.04.30
  • Published : 2012.05.31
Download PDF
⟨ Previous Next ⟩

Abstract

As the huge economical loss and function paralysis of information technology-based systems can be caused by the misoperation of residual current devices(RCDs) due to surge voltages and currents, RCDs shall not operate by surge currents. In this paper, in order to evaluate the reliability of residual current operated circuit-breakers with integral overcurrent protection for household and similar uses((RCBOs) stressed by surges, the unintended trip characteristics of RCBOs under surge currents were experimentally investigated using the combination wave generator. Seven different types of single-phase RCBOs being present on the domestic market were investigated according to KS C IEC 61009-1 standard. As a result, all kinds of specimens were satisfied the requirements for 0.5 [${\mu}s$]/100[kHz] ring wave impulse currents. Most of specimens stressed by the 8/20[${\mu}s$] impulse current tripped at least one or more, and some of them were broken down during consecutive tests. It was found that only one type of specimens meets the L-N mode immunity to the combination wave of 1.2/50[${\mu}s$] impulse voltage and 8/20[${\mu}s$] impulse current.

Keywords

References

  1. S.C. Lee, S.H. Chang, B.H. Lee, "Dead operation characteristics of earth leakage circuit breaker for 50 [A] against surge voltages", J. KIIEE, Vol.11, No.5, pp. 44∼52, 1997.
  2. B. H. Lee, S. C. Lee, C. H. Kim, "Analysis of malfunction characteristics of high sensitivity type earth leakage circuit breaker for 30 [A] due to lightning impulse voltages", J. KIIEE, Vol.11, No.6, pp.96-103, 1997.
  3. J.G. Yoo,. S.I. Lee, J.C. Jeon, "Survey on the malfunction of MCCB and ELB in private electrical facilities", J. KIIEE, Vol.19, No.2, pp.87-93, 2005. https://doi.org/10.5207/JIEIE.2005.19.2.087
  4. KS C IEC 61008-1: Residual current operated circuit breakers without integral overcurrent protection for household and similar uses(RCCBs) - Part 1 : General rules, pp.63-64, 2009.
  5. KS C IEC 61009-1: Residual current operated circuit breakers with integral overcurrent protection for household and similar uses(RCBOs) - Part 1 : General rules,, pp.73-74, 2009.
  6. KS C 4613: Circuit breaker incorporating residual current protection for industrial uses(CBR), pp.5-6, 2011.
  7. KS C IEC 60364-5-53: Electrical installations of buildings - Part5-53: Selection and election of electrical equipment - Isolation, switching and control, pp.4-10, 2005.

Cited by

  1. Protection coordination between residual current device and surge protective devices in low-voltage consumer's installations vol.27, pp.6, 2013, https://doi.org/10.5207/JIEIE.2013.27.6.075