Small scale test model to study impulse flashover and attachment pattern of protected building structures

Abstract

The consequences due to lightning on different building shapes needs a comprehensive knowledge in order to provide the information to the common man. This paper is mainly concern with the development of a small scale model to study impulse flashover and attachment pattern of protected building structures due to lightning strike. The lightning strike pattern of buildings is based on the practical experimental work in high voltage laboratory. Three models are chosen for the study and it was found that the LAT arrangement on a flat roof top square building and grounding terminal for the model must follow certain procedures in order to achieve 100% LAT attachment. The model that has been developed is useful where LAT's upward streamers analysis can be applied to analyse in term of the electric field effect on the lightning air terminal and the entire building structure interaction with lightning strikes.