I googled "600 volt switch dual throw" and found a cutler-hammer DT363URK.
From http://www.alliedelec.com/Images/Products/Datasheets/BM/EATON_CUTLER_HAMMER/416-0447.PDF Not sure if it carries a DC rating all the way to 600v. Thank you, Maverick Maverick Brown BSEET, NABCEP Certified Solar PV Installer ® President & CEO Maverick Solar Enterprises, Inc. Office: 512-919-4493 Cell: 512-460-9825 Sent from my HondaJet! On Nov 9, 2011, at 6:07 PM, "Larry Crutcher,Starlight Solar Power Systems" <la...@starlightsolar.com> wrote: > Right.... a major rewire and many components...and sacrifices. The Outback is > limited to 30 amps AC and cost much more than you would need to spend. > > With my idea you just add a transfer switch....Done. When the grid is down, > PV feeds HV CC. Then you can use ANY size inverter, with or without a > transfer switch. No rewiring the grid inverter. No 240 volt transformers or > dual inverters. No relays, switches or diversion controllers. Batteries are > always properly maintained. No phantom loads. Very simple. > > Thanks for your input. Now if I can just find that darn 600 volt transfer > switch. > > Larry Crutcher > Starlight Solar Power Systems > > > > On Nov 9, 2011, at 1:55 PM, Drake wrote: > >> Any amount of power will AC couple. >> >> If you use an off grid inverter, such as an Outback, to feed the protected >> load panel, the inverter should be fed by grid AC power to supply loads, >> when the grid is available. Just feed your grid tie inverter into the >> protected loads panel. You will need a relay to shut off power from the >> grid tie inverter when the batteries are full. This can be triggered by the >> fan relay in the Outback. >> >> The on grid inverter will push power into the grid through the battery >> inverter's internal transfer switch during normal operation and AC couple >> when the power is out. If your grid tie inverter is 240 volts, you will >> need to use a transformer or two inverters. >> >> The phantom load of the inverter can be eliminated by using a transfer >> switch to send PV power straight to the grid, during normal grid >> availability, keeping the inverter turned off. AC coupling seems much >> easier than using a charge controller, but there is no conditioning of the >> batteries. The charge is just on and off at the voltage set point. For a >> back up system, that is not much of a problem, as the battery inverter can >> maintain the batteries when power is available. >> >> >> >> At 02:04 PM 11/9/2011, you wrote: >>> Nice Find, Drake! Thanks. >>> >>> What is the minimum system for an AC coupled inverter? >>> >>> Again, the idea is for low cost battery backup of an existing grid tie. The >>> AC coupled schematics I have looked at require a major rewire and many >>> components. I would like to hear if someone has a simple add on solution >>> compared to just switching the array to the high voltage CC. >>> >>> Larry Crutcher >>> Starlight Solar Power Systems > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org >
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