alt.energy.homepower

On Sep 2, 9:14 pm, Neon John wrote:
> On Sun, 02 Sep 2007 18:24:32 -0000, philkryder < ...@ > wrote:
> >I love it!
>
> >do simple mechanical governor units - like Generac 8000w - stay synced
> >once this is done?
>
> Yes, absolutely. The same forces which will wreck a generator connected out of phase
> hold the rotors in-phase. If one generator tries to "run" significantly faster than
> the other then reactive current will circulate between them but that is of little
> consequence as long as the total current remains below specification.
>
> In the limiting case of one engine being turned off and assuming the field excitation
> on the turned-off generator remains active, the generator on that unit will act as a
> synchronous motor, spinning the engine at the same speed as the driving generator.
> For fairly obvious reasons, this is undesirable so installations of parallel
> generators that are un-manned normally include reverse power trip relays that open
> the generator breakers when power flowing back toward the generator is detected.
>
> Probably the worst problem to deal with when a generator gets overloaded sufficiently
> to suffer field collapse. when this happens the units fall out of sync and any of a
> number of unpleasant things can happen. The least unpleasant is that the generator
> breaker will trip. Blue smoke leakage can be the worst result.
>
>
>
> >What do you use to "trim the phase" on such a unit?
>
> I don't recognize that term in this context. Do you mean how do I trim the speed
> when syncing? Hand manipulation of the governor. Not hard to do with a little
> practice.
> --
> John De Armond
> See my website for my current email address :// <-- best little blog on the net!
> Tellico Plains, Occupied TN
> I don't suffer from insanity, I enjoy every minute of it.

here is the quote out of context from your earlier post:
"....Hook the neutrals together and hook the bulbs between the hots.
Adjust the speed of one generator until the flicker goes away and then
**** trim the phase **** until the lights...."

I didn't know what you meant either - hence the question.
Phil


remain out for many seconds.