A importância da instalação do aterramento temporário em serviços de manutenção em redes de distribuição

Abstract

Temporary grounding is an essential measure to ensure the safety of workers in Power distribution networks, especially during maintenance activities carried out by the executing teams. These require procedures that comply with regulatory standard NR-10. In this context, this study aims to highlight the relevance of the correct application and installation of temporary grounding in Power distribution networks, with an emphasis on preventing accidents related to electricity. The methodology adopted in this investigation includes bibliographic research and the analysis of a case study on a re-energization incident, there sult of which demonstrate the safe performance of workers involved in the execution of the service, when they correctly use the necessary equipment and follow the guidelines established for temporary grounding. The study highlights the challenges and Best practices in the application of temporary grounding and that the equipment must be installed in a way that ensures that workers are not exposed to the risk of electric shock caused by dangerous voltage differences. As part of work planning, employers must determine the appropriate positioning, size and use of this equipment. Furthermore, the grounding equipment must be capable of handling the highest possible fault current at the grounding point for the time required to safely clear the fault. The results obtained confirm the importance of collective protective equipment as an indispensable measure for preserving the integrity of workers, protecting the network and ensuring the safe continuity of electricity distribution services.