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phase converter and transformer question
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Grant Erwin
Posts: n/a
wrote:
Another possible solution than what has been mentioned:
Use a 220/440V motor as the phase converter. Wire for 440, and drive
ONE HALF of the line connected phase. The converter will be working as
a rotary step up, eliminating the need for the seperate transformer. I
have a machine that uses this trick to avoid the need for a step down.
Not all dual voltage motors can be used in this way.
Can you elucidate a little on "drive one half of the line connected phase",
please? This is written in English and I know what every word means, and
I once had quite a bit of electrical engineering knowledge, but I unfortunately
have no idea what you're talking about.
Grant Erwin
Al MacDonald wrote:
I latched onto an older horizontal mill that runs on 3hp 440V 3ph
power. My
plan is to hook up a 220V rotary phase converter to a 3KVa 3ph
transformer
220/440 and then to the mill. Does anyone see anything obviously
wrong with
my plan? I suppose I could try and find a 220/440 single phase
transformer
and then a 440V single to 3ph rotary converter but I think this way
might be
much more expensive. Thanks, al.
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