| Title |
Wet Flashover Characteristics and Reform Measure of a Conventional Lightning Rod against Lightning Impulse Voltages |
| Authors |
Bok-Hee Lee ; Sung-Man Kang ; Ju-Hong Eom ; Seoung-Chil Lee ; Seung-Gi Kim |
| Abstract |
In this paper, in order to examine the relevant technical facts which are very instructive to revise the domestic standard for lightning protection systems, standards and technical guidelines for the protection of structures against lightning were reviewed, and several issues of the domestic standards were experimentally investigated. As a consequence, the insulator of the existing lightning rods is flashovered by relatively low impulse voltages and a large percentage of lightning currents flows through supporting mast. Thus the potential gradient in the vicinity of the supporter for lightning rods is extremely increased and the role of lightning protection systems is nullified. It seems obvious that the flashover of insulator supporting lightning rod can range from erratic operation of microelectronic devices to minor physical harm or even death, or costly damage to electrical equipment. |