Star-Delta hum

[Sbukubuhle]

Afternoon Everyone,please help me here,i was doing star-delta,my lecture puts a faulty but my control and power cct is still the same,only issue is that the motor its just hum,its doesnt rotate at all...please help me on how to fix its becouse i ve checked but i cant find what couse that.

 

[jraef]

It's hard to understand what you posted, but it appears as though you are trying to start a motor using Star-Delta starting, and the motor does not rotate, it just hums.

If that's correct, it could be a number of issues. The first thing I would check is that you have made up all of the connections correctly. One connection out of place will do this. If you are absolutely sure it is connected correctly, then look for burned contacts in your motor starter, or even blown fuses. A single phasing condition will cause that as well.

I wish you luck.


"You measure the size of the accomplishment by the obstacles you had to overcome to reach your goals" -- Booker T. Washington