3 phase delta vs Wye motor hook up

[Brownetown]

What’s up everyone? I have a 3 phase 208v motor, 37amps, coming off VFD, diagram on pecker head , showing a delta and Y connection. I want to make sure since it is just a 3 phase with ground coming in I’m hooking up with the delta diagram correct. My understanding the wye would only be used if I had a neutral coming in. Am I understanding that correctly? Thanks

 

[infinity]

Can you post a photo of the nameplate?

 

[Brownetown]

I can tomorrow,the motor does only state 208v so there is no way it could have another configuration for 480v, do you think there could be a start or triangle next to it that I might of missed?

 

[infinity]

I can tomorrow,the motor does only state 208v so there is no way it could have another configuration for 480v, do you think there could be a start or triangle next to it that I might of missed?

I'm not sure. Is it a 9 lead motor?

 

[Brownetown]

I wanna say 6 v1-v2
U1-u-2
W1-w2

I believe those were the connections already established. I also wanna say the motor arrived configured as delta.

 

[Jaybone812]

What’s up everyone? I have a 3 phase 208v motor, 37amps, coming off VFD, diagram on pecker head , showing a delta and Y connection. I want to make sure since it is just a 3 phase with ground coming in I’m hooking up with the delta diagram correct. My understanding the wye would only be used if I had a neutral coming in. Am I understanding that correctly? Thanks

Delta motor configuration would be 3 ungrounded phase conductors and a egc, the delta won’t need a neutral


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[retirede]

Delta motor configuration would be 3 ungrounded phase conductors and a egc, the delta won’t need a neutral


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A 3 phase motor would never have a connection to the center point of the wye configuration, either.
Unless there’s some weird thing I haven’t seen before.

 

[Jaybone812]

A 3 phase motor would never have a connection to the center point of the wye configuration, either.
Unless there’s some weird thing I haven’t seen before.

You’re 100% correct . No connection to center point of wye, so no neutral . He’s confusing delta /wye motors with delta /wye systems or transformers .


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[ActionDave]

I can tomorrow,the motor does only state 208v so there is no way it could have another configuration for 480v, do you think there could be a start or triangle next to it that I might of missed?

Wye or delta is how the windings in the motor are connected to each other. With a six lead motor you would put the windings in delta for low voltage hook up and wye for high voltage. Either way you never use a neutral for a three phase motor.

In your case there is no high voltage option.

 

[James.taylor]

Wye or delta is how the windings in the motor are connected to each other. With a six lead motor you would put the windings in delta for low voltage hook up and wye for high voltage. Either way you never use a neutral for a three phase motor.

In your case there is no high voltage option.

100% from my 25 years of experience! I have yet to see a 3 phase motor need a nuetral and if so it was for the controls which were seperate circuits from the motor circuit.

 

[Jaybone812]

Wye or delta is how the windings in the motor are connected to each other. With a six lead motor you would put the windings in delta for low voltage hook up and wye for high voltage. Either way you never use a neutral for a three phase motor.

In your case there is no high voltage option.

Exactly . Low volt delta and high volt wye configurations end up with a identical hp where as hooking this 208 motor up to wye will lead to a lesser hp than the delta configuration


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