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 Analysing motor current is valuable for the remote monitoring of AC induction motors without the need for stopping production. Corus engineers use this technique to detect broken or cracked rotor bars, variable air gaps, stator eccentricity and loose or broken connectors. CNES technicians are able to detect changes in rotor circuit impendence by analysing the recorded spectrum and trending the amplitudes of the known fault frequencies. Along with vibration analysis and thermal imaging, rotor bar testing increases customer decision-making confidence when assessing critical drives. | |
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