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4

Need help wiring Kent mill 1978 2hp

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centaur

Iron
Registered Member
Joined
May 13, 2017
Messages
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#1
Hello,
I want to wire my 2hp to a vfd for 220v. The back plate of my motor plate has a picture layout for both 220 and 440..both of the configurations are the same. I am including the picture and can anyone tell me why they are the same wiring configurations? Thank you all for your help
Mike
IMG_0031.JPG


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centaur

Iron
Registered Member
Joined
May 13, 2017
Messages
14
Likes
3
#2
Hello,
I want to wire my 2hp to a vfd for 220v. The back plate of my motor plate has a picture layout for both 220 and 440..both of the configurations are the same. I am including the picture and can anyone tell me why they are the same wiring configurations? Thank you all for your help
Mike
View attachment 241383


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By the way it's a 3 phase motor


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British Steel

Active User
Active Member
Joined
May 12, 2011
Messages
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#3
They aren't... note that the 220v connections have 4-5-6 linked together, 1 linked to 7, 2 linked to 8, 3 linked to 9.
440v has 7 linked to 4, 8 to 5, 9 to 6.

3-phase power's applied to 1, 2 and 3 in both cases.
What's happening is that for 220v two windings are connected in parallel, for 440 in series so each winding has 220v across it. Simples.

Dave H. (the other one)
 

centaur

Iron
Registered Member
Joined
May 13, 2017
Messages
14
Likes
3
#4
They aren't... note that the 220v connections have 4-5-6 linked together, 1 linked to 7, 2 linked to 8, 3 linked to 9.
440v has 7 linked to 4, 8 to 5, 9 to 6.

3-phase power's applied to 1, 2 and 3 in both cases.
What's happening is that for 220v two windings are connected in parallel, for 440 in series so each winding has 220v across it. Simples.

Dave H. (the other one)
By Judas Priest your right! Thanks very much...this had me stomped and I am just about ready to wire the motor to vfd.


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