Dual speed AC motor starting
Dual speed AC motor starting
(OP)
We have a dual speed (4/2 poles) blower motor with tapped winding Y/YY. If we want to use it only at high speed all the time, can we make permanent connection of windings corresponding to the high speed mode, and just make a DOL start of this motor provided we have motor starting provisions appropriate to the current in high speed mode? Please advise.





RE: Dual speed AC motor starting
Bill
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"Why not the best?"
Jimmy Carter
RE: Dual speed AC motor starting
http://winding.wix.com/design
RE: Dual speed AC motor starting
4-pole mode: 1 kW,60 Hz, 1780 RPM,Y480V, 3.5A
2-pole mode: 7 kW,60 Hz, 3540 RPM, YY480V, 14.5A
RE: Dual speed AC motor starting
Should check how this will affect the fan itself.
Sometimes, the application requires starting trough lower speed due to load acceleration.
RE: Dual speed AC motor starting