Testing of high breaking capacity fuses using modular current sources

Authors:
Adrian Plesca;Emilian Furnica
Affiliations:
Department of Power Engineering, Gheorghe Asachi Technical University of Iasi, Iasi, Romania;Department of Power Engineering, Gheorghe Asachi Technical University of Iasi, Iasi, Romania
Venue:
WSEAS Transactions on Circuits and Systems
Year:
2010

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Abstract

There are many types of switching and protection electrical apparatus used in different power systems with the goal to supply at adequate parameters industrial or domestic consumers. The time-current characteristics of the protection electrical apparatus from datasheets have accuracy up to ± 30%. Hence, in order to achieve a safe protection at overcurrents it is necessary to test the electrical apparatus using proper devices. Therefore, the aim of this paper is to present new types of modular current sources and some possibilities to adjust their parameters. Then, a method to obtain the time-current characteristics of low voltage high breaking capacity fuses without fusing is presented.