Single Phase Electric Motor Windings

Thread Starter

haidir

Joined Dec 22, 2010
1
please kindly help me!


Resistance of Single Phase Motor Windings​

Run to Common (R-C) : 4.6
Start to Common (S-C) : 39.4
Run to Start (R-S) : 44.0


By referring to above , what are the effet if resistance for " run to common", "start to common" and "run to start" exceed or below the value mentioned above?

Best Regards,
Haidir
 

GetDeviceInfo

Joined Jun 7, 2009
2,192
I'd say if they exceeded infinitely, that would be an open winding. On the other hand, if it was zero, absolutely, then that would indicate a shorted winding.

Unless you could 'growl' the windings or view an obvious short, it is what it is.
 

awright

Joined Jul 5, 2006
91
How did you measure the winding resistance? Your typical DVM or VOM is not capable of precise resistance measurements at these low values. Lead/clip lead resistance can add a finite and variable resistance to low value measurements.

Unless you have an open or a shorted winding, you generally can't tell much from DVM resistance measurements.

Care to tell us more about what you are trying to accomplish?
awright
 
Top