Run Wye motors on Delta system?
Run Wye motors on Delta system?
(OP)
We have specified Wye motors but customer now tells us he has ungrounded delta system. Is this a problem? If so, what are our options?
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Run Wye motors on Delta system?
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RE: Run Wye motors on Delta system?
RE: Run Wye motors on Delta system?
Eng-Tips: Help for your job, not for your homework Read FAQ731-376
RE: Run Wye motors on Delta system?
The only times that you need to be concerned about Wye or Delta connections if if you are going to run a four wire connection to the motor (don't understand why) or if you are going to use a star/Delta (Wye/Delta) starter, or you are going to use a soft starter in six wire (inside delta) connection. For standard three wire winnections between the starter and the motor, there is no difference provided that the motor is connected in the correct configuration for the applied voltage.
Best regards,
Mark Empson
http://www.lmphotonics.com
RE: Run Wye motors on Delta system?
jraef said the same thing in different words.
There are some issues called "discontinous ground faults' with ungrounded delta systems. This is a system problem with ungrounded delta systems. Makes no difference how the motors are connected.
The motors can't tell the difference between power from a star system and power from a delta system. Given three hot wires and a voltmeter you and I can't tell either.
respectfully
RE: Run Wye motors on Delta system?
RE: Run Wye motors on Delta system?
The comments above were more to the point of having two motors, both labelled for the same voltage but internally configured with wye or delta connected stator coils. In that case, there is no difference since the voltage rating is the same. In your case, there is a difference since the voltage changes for each configuration.
RE: Run Wye motors on Delta system?
respectfully
RE: Run Wye motors on Delta system?
We have so many different voltages around here in the different countries that most motors are sold like that.
Regards
SACEM1