Check out the Victron line of Chargers as well as the inverter charger units. AC in 187-265 45-65 Hz. for the inverters 230V/50Hz, inverter. Please feel free to e mail me 4 additional info. Great BT support / internet access. well thought out product. > On Mar 13, 2020, at 5:11 PM, Jerry Shafer <[email protected]> wrote: > > Jeff > I have been there too in most cases we have programmed in the VAC max/mins > with tighter setting so as the grid starts to go we just disconnect. I did > just do a charger instead of the inverter because the grid was generally low > on frequency but the charger just charged and l see it on optics when that > happens > Jerry > > On Fri, Mar 13, 2020, 12:03 PM Jeff Clearwater <[email protected] > <mailto:[email protected]>> wrote: > Good Day Esteemed Wrenchers, > > So we are doing more work in developing countries where the grid is super > unreliable but on for some hours almost daily. > > So let's say we have a grid that's on 9 AM - 11 AM and 4 PM - 7 PM each day > but often browns-out during those hours and comes on and off during those > hours. 230 VAC voltage can drop to 160-180 periodically or go above 260 in > spikes. > > The present practice in many of these situations is for battery based system > designers/installers is to set up an off-grid system in parallel to the mains > but not relying on them - so the grid AC IN is not connected. They just > install a transfer switch and manually switch or they wire a critical loads > panel to the solar. > > This avoids constant switching and nuisance shut-downs from the battery > inverter and protects it from burning out trying to handle the grid. > > MY QUESTION: > > I'm wondering what we can do to use the grid when it is up for opportunity > charging of the batteries while at the same time not subjecting our nice new > battery inverters to constant brown-out tripping and possibly long term > damage. > > So question #1 - Is anyone using existing battery inverters but succesfully > navigating such a grid variablity settings such that you are able to take > advantage of the grid even if browning out often? > > or question #2 - Can we add some sort of high Voltage and Frequency tolerant > battery charger to the system - keep the battery inverter/charger off grid - > but charge the batteries from something able to handle the wonky grid without > constantly nuisance charging or burning itself up? > > Your thoughts and wisdom I await!!! > > Best, > > Jeff > > > -- > ~~~~~~~~~~~ > Jeff Clearwater > Village Power Design > linkedin <https://www.linkedin.com/in/jeff-clearwater-0622a312/> > www.villagepowerdesign.com <http://www.villagepowerdesign.com/> > cell - 413-559-9763 > ~~~~~~~~~~~~~~~~~~~~~~~ > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > <mailto:[email protected]> > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > <http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org> > > List-Archive: > http://www.mail-archive.com/[email protected]/maillist.html > <http://www.mail-archive.com/[email protected]/maillist.html> > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm <http://www.re-wrenches.org/etiquette.htm> > > Check out or update participant bios: > www.members.re-wrenches.org <http://www.members.re-wrenches.org/> > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/[email protected]/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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