Problemy praktycznej diagnostyki maszyn indukcyjnych w przemyśle

There are many problems in practical diagnostics of machines operated in industrial conditions. Those problems make diagnostics difficult. They appear at the time of getting diagnostic signals ( accessibility of signals and disturbances). Next step is diagnostic analysis of registered signals for investigated objects. The main problem at this step is proper interpretation of gotten results, especially in the cases where determination of state of investigated objects is hard and ambiguous. The hardness and ambiguity can be expressed by a question, where the presence of diagnostic signal is caused by damage or by an asymmetrical construction of rotor cage? Using the experience acquired during measuring and analysis work the authors would like to report on practical diagnostics of induction machines in industrial conditions.