Motor direction
Motor direction
(OP)
We have a little 2.3Kw 1-p capacitor start induction motor. When supplied at 230 volts ac(UK), the motor operates fine. However, its direction of rotation is arbitrary. When switched on it could run either clock or anti-clock.
I am afraid I am not a motor man but I am interested in just what might be causing this.
I am afraid I am not a motor man but I am interested in just what might be causing this.
Regards,
Lyledunn





RE: Motor direction
Capacitor start should give it a definite starting torque in a preferred direction. Perhaps the capacitor circuit has opened up, or the centrifugal switch is bad.
RE: Motor direction
The start-common measured resistance is noticeably higher then the run-common resistance.
RE: Motor direction
I suggest you take it to your local electric motor repair shop!
RE: Motor direction
RE: Motor direction
I see your point. this motor has been taken off load so there is nothing to get the motor running. I know that the capacitor will cause a phase displacement and thus initiate a start but if it is open circuit would I be right in saying that starting would not be possible without a little help to get rotation going as you suggest?
The unit has been sent to specialists for repair but it is still nice to speculate.
Steve, how does such a condition cause rotation in an ad-hoc direction?
Thanks to all.
Regards,
Lyledunn
RE: Motor direction
I would venture to say that you have shorted windings and a
consequent loss of full starting torque.if windings are sound ,motor would spin in only one direction.
Thanks
GusD