The lightning discharge resulted in an overvoltage that caused a failure in the electrical and electronical systems, stopping the train and disabling the communications. Surge protection devices such as ATPV and ATLINE avoid the serious damages caused by thunderstorms.

Last 3rd of May, between 14h and 16h, meteorology changed abruptly over the Headquarters of Aplicaciones Tecnológicas, S.A., shifting from a stable weather with clear sky into a heavy thunderstorm.