Re: 3 phase converter question

Posted by big jt on February 19, 2014 at 18:58:06 from (206.72.54.246):

In Reply to: 3 phase converter question posted by teachingscience on February 19, 2014 at 16:08:24:

I had a Phase O Matic when running a static convertor. Did the job OK.

All statics need to be sized to the motor and this was part of the problem I had. Was using it on a Lathe with a two speed motor and since the low speed was half the HP of the high speed I didnt' have a low side to the motor (the convertor would just keep thumping).

What I am getting at is bigger isn't better in this case. If you have a 5 horse motor don't get a 10 horse convertor figuring bigger would hold up better. It will keep "thinking" the motor hasn't started and keep trying to start.

One other thing with Statics is you are only running on two thirds of the windings and thusly only have two thirds of the power.

I only use my machine tools occasionally but have never regretted getting a rotary. BTW I added the rotary after adding a mill.

Also no problems getting oversize if you are getting a rotary.

hth

jt

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