Mahmood Hosseini Aliabadi - Electrical Department Islamic Azad University of Central Tehran Branch Tehran, IRAN
Hassan Farrokhi - M.Sc Student in Electrical Engineering Islamic Azad University of Central Tehran Branch Tehran, IRAN

This paper demonstrate the important role of re-closer relay in the case of decreasing arc flash hazard on a power system network is presented. An arc flash analysis performs on system to identify the Personal Protective Equipment (PPE) category, so solutions for PPE category optimization are studied. The results emphasize that by applying re-closer relay, PPE category are optimized and changed to better (lower) range and covers reference standards requirements. Also incident energy reduces and Arc Flash Boundary (AFB) limited to lower distance which are definitely mandatory and vital for the safety of persons who are doing maintenance and work on/around hot lines. Simulation is done by Electrical Transient and Analysis Program (ETAP) which is a powerful software for simulating power systems.

Arc flash; arc flash boundary; , personal protective equipment (PPE); re-closer relay