%0 Journal Article %T The negative sequence impedance as fault indicator in induction motors %A Villada %A Fernando %A Cadavid %A Diego Ra¨²l %A Aedo %A Jos¨¦ Edinson %A Benavides %A Bernardo Andr¨¦s %A Velilla %A Esteban %J Revista Facultad de Ingenier¨ªa Universidad de Antioquia %D 2010 %I Scientific Electronic Library Online %X an algorithm to detect inter-turn faults in induction motors based on the negative sequence impedance is presented in this paper. the implementation through a digital prototype is also explained and its results are tested using a 3 hp induction motor designed to induce inter-turn faults. it is concluded that the robustness of the algorithm can detect incipient faults from five turns, and it is a good tool for predictive maintenance of induction motors. %K induction motors %K stator fault diagnosis %K negative sequence impedance %K digital signal processing (dsp). %U http://www.scielo.org.co/scielo.php?script=sci_abstract&pid=S0120-62302010000200020&lng=en&nrm=iso&tlng=en