전자환경친화형 뇌보호설비의 구축기법에 관한 연구

초록

This paper analysed the technical problem applied domestic by investigation of various characteristics with down conductor of lightning protection equipments. When the impulse current generated by impulse voltage and current generator was applied GV wire and coaxial down-conductor, the magnitude of magnetic field according to material of down conductor and shield effect of coaxial down conductor was measured for suggestion of the effective installation method of down conductor. In case that lightning currents with various rise time were applied, the magnitude of magnetic filed according to various distances was measured. And the propagation characteristic of lightning surge transferred to low-voltage power line associated with types of system grounding was analysed. Therefore, the effective protection method of lightning surge associated with types of system grounding was suggested and the protection effect of SPD according to wiring methods of SPD was analysed.