A Study on the Improved Ignition Limit for Inductive Circuits with Safety Components

안전소자를 이용한 유도회로의 점화한계 개선에 관한 연구

  • 이춘합 (호서대학교 환경안전공학부) ;
  • 박민영 (호서대학교 환경안전공학부) ;
  • 지승욱 (영남대학교 전자정보공학부) ;
  • 김충년 (영남대학교 전자정보공학부) ;
  • 이광식 (영남대학교 전자정보공학부) ;
  • 심광렬 (울산과학대학 전기전자학부)
  • Published : 2004.03.01


This paper describes that the improved effects on the ignition limit are studied by parallel safety components for propane-air 5.25vol.% mixture gas in low voltage inductive circuits. The experimental devices are used in the IEC type spark ignition test apparatus. The improved effects on the ignition limit are respectively obtained as the maximum rising rate of 650%, 1,080% by composing parallel circuits between inductance and safety components (condenser and diode) as compared with disconnecting inductance with the safety components. The more values of inductance the higher improved effects of ignition limit rise. This improving method for the ignition limit is not concerned with the safety components. Diode appears to effect greatly better than condenser. It is considered that the result can be used for not only data for researches and development of intrinsically safe explosion-proof machines which are applied equipment and detectors used in hazardous areas but also for data for its equipment tests.


improved effects;ignition limit;safety components


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