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지홍근 ( H K Ji ),김진표 ( J P Kim ),송재용 ( J Y Song ),최영우 ( Y W Choi ),박찬성 ( C S Park ),박남규 ( N K Park ),길경걱 ( G S Kil ) 한국안전학회(구 한국산업안전학회) 2013 한국안전학회지 Vol.28 No.5
This paper dealt with melting characteristics of low-voltage miniature cartridge fuse used for 220 V electronic equipment. The experimental sample is low-voltage miniature cartridge fuse with rating of 250 V(3A) and size of 5x20 mm. In order to evaluate melting and scattering characteristics of the fuse, we applied to 8/20 us surge current, overload current and external thermal stress such as flame of fire. From the experimental results, the fuse element was melted and scattered by applied surge current(above 0.79 kA) end overload current(above 4.5 A). It was also attached to the inner surface of the fuse tube. The fuse element was attached as a thin film on inner sur-¬face or fuse tube when large surge current was applied. It was confirmed, however, the fuse element was not changed by external thermal stress such as flame and hot-air.