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  1. Tim4269

    Phase Imbalance & Vibrating Cables - Help Reqd

    This one has now eluded me! 3 control panels each seperatly feeding multiple blowers with 132kw Star Delta startup motors. Three problems noted to date: The cables to the motors vibrate (100hz on 50hz supply deffinatly not mechanical vibration) The motors have a phase imblance - 1 winding...

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