Estudo de curto-circuito e seletividade em uma planta industrial

Abstract

This paper presents an evaluation of protective equipment used in industrial electrical systems, demontrating how the coordination of protective devices is made, besides bringing a study of short-circuit currents for this system. In the context of project engineering in Belo Horizonte, it is important to do these studies to better design and specification of the devices, both protected as protection. To do this, the text covers concepts related to the most common protective equipment in industrial mining plants, with their main characteristics and differences in order to assist the protection engineer at work selecting them. Similary, the protected devices are treated by assessing its main electrical characteristics, practices to be adopted for their protection and aspects to be observed during the coordination. To exemplify the analysis, a case study was made of a generic system using the SKM Power'Tools computational tool, showing how the analysis can be made by the coordination sheets, generated by such software.