Yes it can be done Kirk Herander VSE
> On Dec 14, 2014, at 8:09 PM, "Dave" <d...@independentpowerllc.com> wrote: > > Here is a request for advice from one of my old off grid customers who has > recently brought in the grid to lessen his dependence on the generator. He is > NOT selling back to the grid. > > The main question I have is this: Can we program the Trace SW4024 so that > that it will charge the batteries with Grid Power (AC2) when a low voltage > setting is reached? > > << "I have two SW4024 inverters. They are set up to each handle about 1/2 of > the loads in the house. > > Our system is setup so we are either on Grid power, or battery power. > The choice is controlled by a manual transfer switch. > > AC1 on both inverters is backup generator which is controlled by Inverter #1 > when battery voltage reaches preset levels. > > AC2 on both inverters is AC from the grid and is currently controlled by > circuit breakers. The circuit breakers are normally in the off position and > the batteries are charged by the sun. Typically if we want to charge the > batteries a bit with grid power we turn on the circuit breakers and the > batteries are charged through both inverters by utility power. > > What I would like to be able to do is set the inverter, probably inverter #1 > for consistency, to allow grid charging at a set battery voltage and then cut > off the grid when it reaches an upper voltage. My thought is something along > the lines of, if the batteries reach 40% of full charge Grid is started and > allowed to charge batteries until they reach 80% charge. > > I would like to continue as things are at present with the inverter > triggering the back-up generator if needed. Again my thought is at 35% of > Full charge Generator is started and is then shut off at 80% of full charge. > > My goal is to use PV juice as much as possible with first backup being Grid > and second backup being Generator. This should allow us to go away and > hopefully run the house on PV but have two backups if needed". >> > > > I would appreciate advice from anyone with experience with a system like this. > Best, > Dave > > David Palumbo > Independent Power LLC > 462 Solar Way Drive > Hyde Park, VT 05655 > 802-888-7194 > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org >
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