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

한국조명전기설비학회 (The Korean Institute of IIIuminating and Electrical Installation Engineers)
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누전차단기의 트립 동작시간 분석을 통한 전류·시간적(積) 개선

Improvement of Circuit-Time Product through Analysis of Operating Time of Earth Leakage Circuit-Breakers

  • 김주철 (상도전기통신(주) 부설연구소) ;
  • 이상중 (서울과학기술대학교 전기정보공학과)
  • Kim, Ju-Chul (Sangdo E&GC Co., Ltd., Corporate R&D Institutes, Chief Technology Officer) ;
  • Lee, Sang-Joong (Seoul National University of Science and Technology, Department of Electrical Engineering)
  • 투고 : 2012.09.18
  • 심사 : 2012.10.24
  • 발행 : 2012.12.30
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초록

The earth leakage circuit-breakers installed to protect the human body against electrical shock have conventionally had a sensitivity current of 30 mA and an operating time of 30 ms or less. No reviews are found, however, on the operating time of the current conducting through the human body due to the electrical shock or ground fault. This paper measures the trip-operating time against the earth leakage under the condition of increased current as well as under the condition of rated sensitivity current of the earth leakage circuit-breakers. Further measurement with a prototype model showed an improved operating time of 16 ms or less under the condition of rated sensitivity current. It is expected that development of circuit-breakers with higher safety is possible if the performance of the electronic circuit can be improved.

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참고문헌

  1. A Statistical Analysis on the Electric Accident, No.20, Korea Electrical Safety Corporation, Ministry of Knowledge Economy, 2011.
  2. Technical guideline on the Low-voltage electric circuit ground fault protection, Korea Electric Technology Standards Committee, Korea Electric Association, KECG 9101-2003, pp.34-36, 2003.
  3. A study on the Installation Guide of the Residual Current Protective Devices for Protection Against Electric Shock on the Human Body, Seoul National University of Science and Technology, Korea Electric Association, Ministry of Knowledge Economy, pp.67-68, 2002.
  4. KS C 4613 : Residual current protective devices, Korean Standards Association, 2002.
  5. KS C IEC 61000-4-5 : Electromagnetic compatibility (EMC)-Part 4 : Testing and measurement techniques-Section 5 : Surge immunity test, Korean Standards Association, 2008.
  6. KS C IEC 60947-2 : Low-voltage switchgear and controlgear - Part 2: Circuit-breakers, Korean Standards Association, 2009.
  7. KS C IEC 61000-4-4 : Electromagnetic compatibility (EMC)-Part 4 : Testing and measurement techniques-Section 4 : Electrical fast transient/burst immunity test. Basic EMC Publication , Korean Standards Association, 2009.
  8. The Guide to Korea Electrotechnical Regulation, Korea Electric Association, pp.458, 2009.