[RE-wrenches] VFD drives

[James Jarvis]

There should be no issues. My rule of thumb is very hard starting 15
horsepower three phase motor will start and run with a quality 30 kilowatt
three-phase generator. That's across the line starting with massive
current. You can program your VFD such that there is no massive surge and
so a 10 horsepower on a 30 kilowatt will be absolutely no problem.

-James Jefferson Jarvis
APRS World, LLC
+1-507-454-2727

(Sent from my phone. My apologies for spelling errors and brevity.)

On Thu, Jul 11, 2024, 12:07 PM jay via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> HI All,
>
> I’m being asked to comment about running a 10hp 3 phase well centrifugal
> pump off of a 30kw single phase generator with a VFD drive.
> This well pump is located in a tank for fire fighting applications, so its
> not down a deep well meaning almost no head pressure. And the start time
> can be quite slow as its not supplying a house/pressure tank.
>
>
> I”m not an expert on VFD drives, but I figure many of you are.
>
> My question, based on the question from the engineer is:
>
> 1. is there any issue with running a VFD off of a good quality 30kw brand
> new Kohler turbo propane generator?
> The engineer seems to think there is but he won’t say why.
>
> i can’t think of any reason at all?
>
> This generator is only running this one load, the well pump.
>
> jay
>
>
>
>
>
>
>
>
>
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