motor winding connection: WYE VS. DELTA
motor winding connection: WYE VS. DELTA
(OP)
Please help me to specify the motor winding connection, WYE or Delta for 200HP, 3 phase 480V induction motor. what is the different for those two connections?
thanks
thanks





RE: motor winding connection: WYE VS. DELTA
RE: motor winding connection: WYE VS. DELTA
There are 460 volt motors available but you may find that dual voltage 230:460 volt motors are more available.
There are also 230:460 voltmotors with a delta winding configuration but this is not usualy noted on the nameplate.
Both motors use the same high voltage connection but the wye uses three groups of two wires and one group of three wires for the lower voltage.
The delta uses three groups of three wires for the lower voltage.
I haven't seen a NEMA motor wound delta for years.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: motor winding connection: WYE VS. DELTA
RE: motor winding connection: WYE VS. DELTA
Using delta connection in a motor is very usefull on oscillating loads, or reciprocant machines such as compressors, line current will be more balanced, some cases you have to pay more for having the possibility of a delta connection in a motor, every phase is able to handle full voltage
RE: motor winding connection: WYE VS. DELTA
I was wondering about the transformer analogy. I was wondering if motor is considered as a special transformer with a delta connected secondary and either a wye or a delta primary, are there any discernable differences when the motor is operated on a bad supply.
I have never seen any difference but I thought, "If there is any difference, this is the forum to find out!"
Thanks again
Bill
--------------------
"Why not the best?"
Jimmy Carter