440 3Phase Controller

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Subject Author Date
440 3Phase Controller Rod 09-26-2006
Posted by Steve on September 26, 2006, 6:41 pm
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Nick M=FCller wrote:

> If it can run in star and delta, it has six wires.

Seems the star and delta ones by design usually have six terminals, you
decide which three to use. I have a star motor I have converted to
delta, so I just have three terminals, and have broken into the star
point on the winding to bring out the leads to convert it to delta.
Sorry for the confusion.

I am still mystified how a motor with three terminals marked 220V,
110V, 110V (plus ground) can be currently running on 440V three phase !

Steve R


Posted by Christopher Tidy on September 26, 2006, 10:47 pm
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 Nick Müller wrote:
>
>
>>OK so thats the end of my theory ...
>
>
> Now I'm really confused. :-))
>
> One correction:
> If it can run in star and delta, it has six wires.
>
> And what I really don't understand at all:
> The OP says some windings do have connection to earth. That would be a
> clear reason for scrapping the motor.

I think if you substituted "plus" or "together with" in place of "with"
in his original post, the meaning would have been less ambiguous. I am
pretty sure that he just means there is a ground as well as the wires
which connect to the windings.

Best wishes,

Chris



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