Lightning-induced voltages on telecommunication lines in Korea

This paper gives the characteristics of lightning-induced voltages on the subscriber telecommunication lines. The lightning parameters such as peak voltage, rise time, decay time and steepness of the front wave were statistically analyzed from the measured results. Induced voltage measurement system to measure and collect the lightning-induced voltages from several sites of Korea was developed and installed in many central offices. The distributions of lightning-induced voltages for years and seasons were analyzed.