| Title |
Studies on Generation and Detection of Discharge Signals in a Low-voltage Outlet |
| Authors |
길경석(Kil, Gyung-Suk) ; 송재용(Song, Jae-Yong) ; 서황동(Seo, Hwang-Dong) ; 문승보(Moon, Seung-Bo) ; 조영진(Cho, Young-Jin) ; 황돈하(Hwang, Don-Ha) |
| Keywords |
Discharge Signal ; Indoor Outlet ; Electrical Fire ; Wiring Devices ; Deterioration ; Incomplete Connection ; Frequency Spectrum |
| Abstract |
The objectives of this paper are to provide information on the characteristics of the discharge signals in a low-voltage indoor outlet. Most of electrical fires are caused by short circuits, overheating of wires, deterioration and incomplete connection of wiring devices. The last two cases are predictable before the occurrence of fire because of its slow progress. We have simulated the discharge signals caused by the deterioration and incomplete connection of wiring devices using aged outlets. From the experimental data, we could characterize the frequency spectrums of the discharge signals depending on the cases. The higher frequency components of the signal are attenuated by the capacitance and inductance of power lines as the measuring point is getting away from the discharges. Main frequency components of the discharge signal are existent at 600kHz - 1.5MHz in incomplete connections and at 210H7z - 8MHz in deteriorations of the outlet. |