"Pete C." wrote:

"Michael A. Terrell" wrote:

"Pete C." wrote:

"Michael A. Terrell" wrote:

"Pete C." wrote:

"Michael A. Terrell" wrote:

Cross-Slide wrote:

Maybe YOU are talking about an RPC, but the subject of the OP is " VFD
question "

It doesn't matter, since the transformer goes before anything else.
It operates at line voltage, and in Gunner's case at a constant 60 Hz.

It does matter, a set of transformers can most certainly come after a
RPC, if you only have buck transformers large enough to handle the three
phase current, not the single phase current.

Why would you put three after the RPC when one at the input ddoes it
right? Are you that stupid?

I'm not stupid, but you may be if you are that clueless as to the
context and the point I made about the transformer sizing. If you have
for example three 1KVA transformers on hand but no 3KVA transformers,
it's a pretty easy choice to use the three you have downstream rather
than buy a new transformer to use upstream.

OK, if a hack job pleases you.

A "hack job" utilizing parts you already have on hand vs. spending money
buying new parts will please most HSM folks. We are talking HSM here,
not in a factory where you would have real three phase power anyway.


The OP has a problem with a VFD with an overvoltage condition on it's
input. Please explain how your hack job on the output will fix that.


--
You can't fix stupid. You can't even put a Band-Aid™ on it, because it's
Teflon coated.