Coil grouping Constant Torque Motor

[ProWinder]

I am rewinding a constant torque motor. The motor is 4 pole and 8 pole. 54 slots. The groups are odd number. 6 groups of 4 and 6 groups of 5. The coils can be put in the stator in order of 454 545 454 545 or 454 454 545 545. Why is the second order the correct one. The groups need to be connected skip pole (1-7) and not adjacent pole (1-4), to get the constant torque motor. Thanks for any help

 

[zlatkodo]

Every time you ask something about motors, you need to write all the details from the nameplate..
Zlatkodo

 

[zlatkodo]

I suppose, that it is Dahlander winding for 8/4 poles, 54 slots, for connection delta/2Y. Should be very careful in taking the data for these kind of windings.
You are right: second order is correct ( 454 454 545 545 ). When would you do this by the first order ( 454 545 454 545 ), in higher speed will be unbalance because of different number of coils in two parallel circuits , what you can see from the scheme in the appendix.
If you find the span 1-7, OK. I worked something similar with span 1-8.
Zlatkodo

 

[edison123]

zlatkodo beat me to it. It is all about circuit balance.

BTW, by 1-7, OP means pole jumpers not the pitch. I call them as long jumpers (as against 1-4 short jumpers)

 

[ProWinder]

Thanks for the info Guys.