Analysis and Countermeasures for False-Tripping of Earth Leakage Breaker Due to Lightning Surge

누전차단기의 뇌써지 동작특성 분석 및 오동작 대책

  • Published : 2002.10.01


Recently it is reported that many a malfunction of ELB which is represented by non-operated type ELB for an impulse wave, is caused by lightning impulse and transient ground potential rise due to nearby lightning strokes. In order to examine the cause of malfunction, 5 samples were investigated experimentally in this study. As each ELB has a different leakage current detecting circuit and wiring method, various characteristics were measured. As a result, all of them brought about malfunctions under the lightning impulse voltage less than 7 kV and the surge current less than 3 kA. Also the different aspects were measured with a polarity of injected surge and a position of MOV to protect the inner circuit of ELB. The Position and effects of protecting devices were suggested as a remedy.


Earth Leakage Breaker;Lightning Surge;False-Tripping;MOV(Metal Oxide Varistor)


  1. M. Capelli-Schellpfeffer, M. Toner, 'Advances in the Evaluation and Treatment of Electrical and Thermal Injury Emergencies', IEEE Trans. Ind. Appl., Vol.31, No.5, pp.1147 -52, 1995
  2. 渡邊信公, '當サ-ジによる漏電遮斷器の誤動作についての實驗と考察', 電氣設備學會誌, Vol.9, No.4, pp.303-308, 1989. 4
  3. 이복희, 이승칠, '서지전압에 대한 50 [A] 용 누전 차단기의 부동작 특성', 조명.전기설비학회지, Vol.11, No.5, pp.44-52, 1997
  4. 이복희, 이승칠, '뇌임펄스전압에 대한 30 [A]용 고감도형 누전 차단기의 오동작에 대한 특성', 조명.전기설비학회지, Vol.11, No.6, pp.96-103, 1997
  5. KS C 4613 : 누전차단기, 한국표준협회, pp.5-22, 1994
  6. JIS C 8371 : 漏電遮斷器, 日本規格協會, pp.33-38,1992
  7. IEC 1008-1 : Residual current operated circuit -breakers without integral overcurrent protection for household and similar uses(RCCBs), pp.127-135, 1996
  8. ANSI/IEEE Std. C62.41-1991, IEEE Guide for Surge Voltage in Low-Voltage AC Power Circuits, pp.22-58, 1991
  9. Ronald B. Standler, Protection of Electric Circuits from Overvoltages, John Wiley & Sons, Inc., pp.146-155, 1989