Engineering Troubleshooting 3 Phase Motor Rotation: Causes & Solutions

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Reverse rotation in a three-phase motor can be caused by incorrect phase termination, which can lead to the motor running in the opposite direction. Another potential cause is a blown fuse in one of the phases, effectively turning the motor into a two-phase system. Quick fixes should focus on external issues rather than internal motor repairs. Ensuring proper phase connections and checking for blown fuses are essential troubleshooting steps. Addressing these factors can help restore correct motor rotation.
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Homework Statement


List two causes of reverse rotation in a three phase motor.


Homework Equations





The Attempt at a Solution



I've already listed incorrect phase termination as my first solution, but I'm stumped on the second. These are supposed to be "quick fix" solutions, no internal motor repair required. Any thoughts?
 
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Here's a wild guess: a fuse in one of the phases being blown, so it's a two phase motor.

I said I'm just guessing. Do you think that might cause it?
 

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