Try these guys... Heard Good things. Not sure how they would work with 4 in parallel on the same battery bank.
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If you receive this email in error, please contact the sender and delete or destroy this message and all copies. ------------------------------ On Tue, Apr 21, 2020 at 9:44 AM RE Ellison <reelli...@gmail.com> wrote: > Maybe somebody’s already got this thought in here I didn’t look that > in-depth > > Used to be a good suggestion was to get a couple magnums or heart > interface inverters and use them strictly as a charger not an inverter > > So the inverters you have can keep inverting the generator would feed the > other inverters that are used strictly as chargers so the transfer switch > does not function and you don’t get that instantaneous change when it > crosses over with the transfer switch > > Another advantages is if you have a problem you have inverters on site > that you could wire over to to keep things going > > Just a thought, > Bob Ellison > > On Apr 21, 2020, at 12:32 PM, Jason Szumlanski < > ja...@floridasolardesigngroup.com> wrote: > > I'm not sure I follow. I would disconnect the generator AC2 input from the > existing quad XW system and move it to the external chargers. Or, I could > just turn the charging off by software config in the XWs. > > If I were to buy four inverter/chargers to serve as "external" chargers > for the battery (any brand, really) I would just connect the generator > input to AC2 and the battery to the batt terminals of the four inverters. > The AC1 input/output would have no connections. The inverter function would > be turned off and the charger function turned on. > > Again, this would be an expensive solution. I'm sure there are some > companies making high output DC chargers. I assume a 48V model will be able > to go up to 60V charging output, which would be plenty for my 51V nominal > system. > > > > > > On Tue, Apr 21, 2020 at 11:44 AM Dave Angelini Offgrid Solar < > offgridso...@sti.net> wrote: > >> 4 xw's need the external relay contactors not the internals, Right? >> >> You will destroy the internals relays. If there was warranty still left, >> and there is not on 6048, you would need to scrap them for parts. Xw logs >> welded relay warnings and faults for warranty on all xw's. >> >> *Dave Angelini Offgrid Solar >> "we go where powerlines don't" >> http://members.sti.net/offgridsolar/ >> <https://mailtrack.io/trace/link/bfc5c89d65aef9f0b5e725d2bd92b6a394f4c1d5?url=http%3A%2F%2Fmembers.sti.net%2Foffgridsolar%2F&userId=1613865&signature=0219a8bb6ef16eee> >> e-mail offgridso...@sti.net <offgridso...@sti.net> >> text 209 813 0060* >> >> On Tue, 21 Apr 2020 08:27:53 -0400, Jason Szumlanski < >> ja...@floridasolardesigngroup.com> wrote: >> >> I actually need 400Adc at 51V nominal of total charge rate. I was hoping >> to use 100Adc chargers for redundancy, or some combination of 2-8 chargers >> to reach the needed current, assuming they can be synced up. I don't think >> the charging algorithm needs to be complicated. We are basically bulk >> charging the LiPOs to 80% with the battery BMS controlling the generator. >> The concept is to get to 80% sometime in the night and solar kicks in >> during the day to reach 100% using 2-stage charging from the XW charge >> controllers. >> >> The problem I have is the quad XW6048s in the system run at a pretty good >> load typically... often over 50%. This is off-grid with generator backup. >> The transfer switches in the XW6048 are causing surges and brownouts when >> the switched loads are high, especially smart dimmers and televisions. I >> need seamless power for this client. My thought is to abandon the internal >> chargers in the XW6048s and just run loads off inverter power full-time. I >> would charge the batteries with external battery chargers. The tricky part >> is how to adjust the charge rate based on load, and also based on solar >> input. I need to limit the net charging current. Of course, I still need >> 400Adc of charging current, which I'm learning might be hard to find. I >> don't really want to buy four more XWs - that's a pretty expensive >> solution. >> >> Jason Szumlanski >> Florida Solar Design Group >> >> >> On Fri, Apr 17, 2020 at 4:26 PM Dave Angelini Offgrid Solar < >> offgridso...@sti.net> wrote: >> >>> I use the CSW 4048. It has a 50 amp charger. A good spare for clients. >>> Get 2 of them. Repurpose an old Radian or XW well over 100A. XW+ is 140adc. >>> >>> *Dave Angelini Offgrid Solar* >>> >>> *"we go where powerlines don't" >>> http://members.sti.net/offgridsolar/ >>> <https://mailtrack.io/trace/link/5af0eb5f8dd4c7a24dd026291d57d94546cb47f0?url=http%3A%2F%2Fmembers.sti.net%2Foffgridsolar%2F&userId=1613865&signature=595b49adabeeb7d3> >>> e-mail offgridso...@sti.net <offgridso...@sti.net> >>> text 209 813 0060* >>> >>> On Fri, 17 Apr 2020 14:21:14 -0400, Jason Szumlanski < >>> ja...@floridasolardesigngroup.com> wrote: >>> >>> I'm looking for a standalone 51V nominal battery charger suitable for a >>> LiPO battery with 2-stage charging and adjustable setpoints for max current >>> and battery voltage. It would require dual chargers with 100A capacity (I >>> want dual chargers for redundancy so I have at least 50% capacity if one >>> goes bad). Ideally they would sync up so they change stages simultaneously, >>> but I'm not sure if that's really important. >>> >>> Who makes something like that? >>> >>> Jason Szumlanski >>> >>> >>> >>> _______________________________________________ >>> 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 >>> <https://mailtrack.io/trace/link/ce00343244d12b419be9c1f6a80866aa2984b4e9?url=http%3A%2F%2Flists.re-wrenches.org%2Foptions.cgi%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=b07650cd8f713422> >>> >>> List-Archive: >>> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >>> <https://mailtrack.io/trace/link/de7b0144035d5af130a034018cf1a80cdcad434f?url=http%3A%2F%2Fwww.mail-archive.com%2Fre-wrenches%40lists.re-wrenches.org%2Fmaillist.html&userId=1613865&signature=2acf41820fb33432> >>> >>> List rules & etiquette: >>> www.re-wrenches.org/etiquette.htm >>> <https://mailtrack.io/trace/link/8a007f97ecb537a3c7baad2981feb2e4033033f5?url=http%3A%2F%2Fwww.re-wrenches.org%2Fetiquette.htm&userId=1613865&signature=8eb86381ebe452c5> >>> >>> Check out or update participant bios: >>> www.members.re-wrenches.org >>> <https://mailtrack.io/trace/link/88b9c9481f8a5d918a45460ee0c37ba67d9ec3e8?url=http%3A%2F%2Fwww.members.re-wrenches.org&userId=1613865&signature=235f80c8aad6e268> >>> >> _______________________________________________ > 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 > > _______________________________________________ > 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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