Análise de risco humano devido ao arco elétrico e comparação dos métodos de cálculo de energia incidente

Abstract

The electric arc phenomenon has been present in electrical systems since the beginning of practical engineering applications; however, the dangers related to the arc have been largely ignored over time. Only a few decades ago the studies of this phenomenon were systematized in norms, mainly in the United States. In Brazil, the main standard in electricity, the NR-10, does not explicitly address this issue, which forces engineers and technicians to resort to international publications for the safe development of projects. In this context, the present work aims to study and compare the possibilities of applying two of the main standards used: the NFPA-70E and the IEEE-1584, based on a case study that verifies the results obtained in the analysis of safety to the electric arc carried out in a supermarket. Then, the specificities of each method and the results obtained from the carried-out study are discussed.