Fusing Time Characteristics Analysis of Cable according to Temperature and Insulator 


Vol. 33,  No. 5, pp. 15-20, Oct.  2018
10.14346/JKOSOS.2018.33.5.15


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  Abstract

This paper describes the fusing time characteristics of Light PVC Sheathed Circular Cord(VCTF) and Tray Frame Retardant(TFR) cables according to increased temperature under over current condition. The experimental equation will be used to determine the validity and reliability of the test results. The over current flowed 3, 5 and 10 times higher than the amount of allowable current using DC power supply with DAQ(Data Acquisition) measurement system. An infrared radiation heater, which was controlled by a variable AC auto transformer, was used to increase the temperature from room temperature to 50, 100 and 150 degrees Celsius. First, two type of cables were analyzed those with different cross-sectional areas with in the same structure and those with different structures with in the same cross-sectional areas. Then, it was determined how fusing time had been influenced according to the cross-sectional areas and different structures, respectively. The cable resistance was increased by joule heating according to increasing temperature. Therefore, the allowable current of cable is decreased. Finally, the fusing time of the cable was decreased due to increased temperatures at current flow, which were 3 times the amount of allowable current. The instantaneous breakdown was observed when current flow was 5 and 10 times over the amount of allowable current. The fusing time is directly affected by the structure of cable insulation.

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  Cite this article

[IEEE Style]

김주희, 강신동, 김재호, "Fusing Time Characteristics Analysis of Cable according to Temperature and Insulator," Journal of the Korean Society of Safety, vol. 33, no. 5, pp. 15-20, 2018. DOI: 10.14346/JKOSOS.2018.33.5.15.

[ACM Style]

김주희, 강신동, and 김재호. 2018. Fusing Time Characteristics Analysis of Cable according to Temperature and Insulator. Journal of the Korean Society of Safety, 33, 5, (2018), 15-20. DOI: 10.14346/JKOSOS.2018.33.5.15.

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