Multi-chamber arrester study at tropical area for 20 kV lines lightning protection system

This paper issues on 20kV overhead lines related to lightning strike to the medium voltage line and the consequences of lightning overvoltage at the tropical Area like Serpong area near Jakarta. Few standard lightning protection solutions are discussed in terms of expected performance and limitations. Implementation of Multi-Chamber Arrester (MCA) and the research results after 1 year of operation in the tropical area with high lightning density (>15 flashes per km2 per year) in Jakarta region are presented.