The issue to be resolved in the current case study started from the observation of the large number of accidents involving electric services in the maintenance of medium-voltage circuit breakers. The objective of this study ...

This paper presents the results of overstressing studies of circuit breakers in step-up substation of São Salvador, located in the state of Tocantins, based on the pre-operational data of 2008, supplied by ONS. In a very ...

This paper presents a new methodology to evaluate in a predictive way the reliability of distribution systems, considering the impact of automatic recloser switches. The developed algorithm is based on state enumeration ...

The calculation of short circuit current is very important in the design of industrial electrical installations, and one of the main points considered in approving the project for the local power company is the selectivity ...

Os disjuntores são dispositivos eletromecânicos que desarmam automaticamente assim que identificam uma corrente elétrica que ultrapassa o valor nominal da projetada para ele, evitando danos aos circuitos dos equipamentos ...

The electrical system is subject to several types of failure occurrences, short circuits and abnormal operating conditions, thus producing transients in the network. For these reasons, it is essential that circuit ...