Re: NEW member Suitable conversions?

15 HP for the converter sounds like over kill. Do you have anything that is
15 HP that you need to run?
I have a 5 HP converter and it runs my 5 HP lathe and two 2 HP mills all at
the same time. In fact, if the mills are running the lathe seams to start
easier. I think the phase converter only needs to be big enough to start the
largest machine. After that, the other machines give additional power so
that if you had a 5 HP converter and a 2 HP mill running you could start a &
HP motor.
As to the capacitor start, you need extra capacitors to start the converter
and then drop some out to run. Capacitors really help balance the voltage
and increase the efficiency.
Darrell

> I already got a 15 Hp 3 phase motor to build the converter.
>
> I have a motor and an electric clutch from an old copier salvage job.
>
> I figured on spinning the large motor up with the small one, and then

releasing

> the clutch and kicking in the relays to run it.
>
> I hear it should be possible to do the same thing with some caps, but if

it

> doesn't start correctly just one time, it will burn up.
>
> A circuit to get the motor and power line in sync before kicking in the
> relays would probably be a good addition.
>
> The drive motor for the lathe spindle is rated at 5 hp.
> It in turn runs the spindle with a single 1/2" V belt. Go figure.
>
> I even bought half a dozen 6" chunks of steel pipe, I don't know where

they

> went, but I bought them ;-).
>
> Marc
>
>
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