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Recent content by pickersa

  1. pickersa

    Increasing Vibration Peaks at 21,600 CPM

    Hello Everyone; This is a very interesting thread. We have the same problem here at the mine. A 6 times line frequency vibration that was first noticed about 7 weeks ago. Now we did confirm it was electrical by shutting down the fan for a few seconds and restarting it. Provided you don't...
  2. pickersa

    Three phase motor burns out every three years ? WHY

    It is true that the capacitor will reduce wasted watts. However, these wasted watts will be in the power delivery system not in the motor. The reduction in losses in the supply line will improve the voltage levels and this will in turn reduce the current required by the motor and this will in...
  3. pickersa

    Three phase motor burns out every three years ? WHY

    Previous post suggests motor will run cooler with capacitors. This is not really true. The motor power factor cannot be changed it is a function of design and interaction between coils etc.. The capacitors will change the power factor of the system but not of the motor. The system current...

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