Xantrex Sun tie inverter [RE-wrenches]

[Allan Sindelar]

Jay,
Since it's a low-cost, low-risk system anyway...how about a NC AC-coil relay
powered by grid, with the NO/Common power terminals directing DC to a
resistive dump load? (Not that I've tried this...) Grid goes down, relay
immediately opens, allowing hydro to go to the dump load. You might have to
use an MDI mercury contactor to handle the 100V DC, but they're not that
expensive in 60A capacity.
Allan

----- Original Message ----- 
From: "Jay Peltz, Peltz Power" <jay at asis.com>
>
> Yep trying to keep this from happening, of course this guys at the
> end of the road way out, common winter power outages so this is a
> real concern.
>
> Yes I can get some pretty pricey  dump loads from SWWP, but trying
> not to.
>
> Thanks,
> jay
>
>
> On Nov 25, 2006, at 12:04 PM, Don Loweberg wrote:
>
> >  What fun to be on the cutting edge. The main thing is to keep the
> > turbine max v below the smoke point. One concern I would have is
> > the situation when the grid goes down, inverter shuts off, turbine
> > load goes to zero, turbine revs up and smokes inverter. Seems like
> > the wind guys may have had to deal with this situation. Good luck Jay.
>


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