Hello Team, thanks for the information shared so far and l appreciate it. We are now going through the Root Cause Analysis processes and your inputs are good for the team. We are yet to dismantle the motor to inspect the internal.
From all the parameters, before the failure everything looked...
We recently had a failure on one of the two 6500kW Inductive motors driving a Ball Mill. Upon investigation it was realized that one of the three busbars connecting the slip ring to the rotor has melted and sheared off. What could have caused this failure?