期刊名称：Constantin Brancusi University's Annals, Letters and Social Sciences Serie
印刷版ISSN：1844-6051
出版年度：2010
期号：2
出版社：Academica Brancusi Publisher
摘要：During operation, the paths of current of electric devices are crossed by the rated current. They include the wasteful resistances of conductors, contact resistances ad therefore, the passing of the electric current results in losses of power RI 2 which transform into heat and cause the heating of electric devices. Therefore, devices heating is a normal operation regime, the values that can be reached by an electric device during operation being prescribed by standards. In this paper we want to study the heating of an electric contactor for various operation regimes through thermographic expertise.
