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This paper presents the development of a diagnosis technique, used on-site, applied in the evaluation of station type surge arresters, of SiC and ZnO installed in FURNAS' electrical system. Thermovision, leakage current and radio interference techniques were used in on-site measurements. From the field results, a statistical study was made and the surge arresters were classified in four categories:...
A DC resistive SFCL consists of an inductance and a quenching superconducting resistance embedded in diode bridge. The superconductor operates in nearly DC current conditions. This regime of operation drastically reduces the AC losses and makes it possible to implement the device by means of present state of the art superconductors. In this paper the AC losses of a laboratory scale prototype of DC...
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