Maker Pro
Maker Pro

help wiring 3 phase washing machine motor

Status
Not open for further replies.

Minder

Apr 24, 2015
3,478
Joined
Apr 24, 2015
Messages
3,478
Incidentally a 3ph motor that was used extensively for crane hoists, but rarely seen today because of VFD etc, is the wound rotor AC induction motor.
Instead of shorting bars, the motor used rotor coils brought out via slip rings, the resultant 3ph was then rectified and a variable resistor bank placed across the DC, varying the induced rotor current.
When decreased to 0 Ohms, the speed was at maximum..
M.
 

Bluejets

Oct 5, 2014
6,901
Joined
Oct 5, 2014
Messages
6,901
Incidentally a 3ph motor that was used extensively for crane hoists, but rarely seen today because of VFD etc, is the wound rotor AC induction motor.

Also seen one used in the primary jaw drive in a rock crusher. (70HP with resistor bank))
Use of it had many advantages which included being able to literally be able to "rock" the motor by start -stop to clear a large bolder.
Crude I know but it worked for many years until someone "smarter" than us decided a standard runofthemill auto-tranny start motor would be better.
Lasted one full day. :)
 
Status
Not open for further replies.
Top