KISS…. have you checked the low voltage setting on AC2? Make sure that is is not set to the default settings. AC Transfer time? I set to the lowest time, I believe its 1. You also have 4 inverters what IS the charge setting of these units? "Gen assist" enabled? Info from Schneider engineer below; The AGS will cause XW+ to disconnect the generator when a stop signal is sent (Auto Stop) for the generator cool down period (user adjustable-AGS>Advanced Settings>Cfg Gen). If you are just manually stopping the generator, then it is possible for the XW+ to stay connected all the way down to 80V unless you increase that low AC value in XW+>Advanced Settings>AC Settings menu. AC2 transfer time may also be adjusted (default is 40s) using Combox, Gateway or Config Tool. This is the time it takes to switch from gen to inverting. Hope that helps, Eric > On Apr 21, 2020, at 4:27 PM, Jason Szumlanski > <ja...@floridasolardesigngroup.com> wrote: > > The issue is during switching only. During inverter operation everything is > silky smooth. During generator operation things are mostly smooth, but large > loads that come on or off during heavy charging can cause some surging, but > that is more a function of a junky generator (which was just replaced with a > better unit). > > So the natural conclusion by the client is let's just run on battery/inverter > all the time. And it does make sense. And it's his money. > > > > > <https://mailtrack.io/trace/link/dc9d2bf1a6ed3ab2028d0191fb091d7f7b046263?url=http%3A%2F%2Fwww.floridasolardesigngroup.com%2F&userId=1613865&signature=c26b4cee42f4b8bf> > > Jason Szumlanski > Principal Solar Designer | Florida Solar Design Group > (239) 491-8010 <tel:(239)+491-8010> (239) 410-4985 <> > www.FloridaSolarDesignGroup.com > <https://mailtrack.io/trace/link/464d6a4b34062e0cbcfd59d1f4a207c11a2d53b7?url=http%3A%2F%2Fwww.FloridaSolarDesignGroup.com&userId=1613865&signature=16e1359b785e0007> > > <https://mailtrack.io/trace/link/38ee09c99b0ee769df9018eb52064a2c08fe278d?url=https%3A%2F%2Fwww.facebook.com%2Ffloridasolardesigngroup&userId=1613865&signature=8df3f0a92f6bc4ae> > > <https://mailtrack.io/trace/link/edb92861accc03f7644281408fa3391d8a074349?url=https%3A%2F%2Ftwitter.com%2FFloridaSolarDG&userId=1613865&signature=312d2a620b1390ac> > > <https://mailtrack.io/trace/link/eed1c529ac3a8ee695b595899cb22ae6f30ed648?url=https%3A%2F%2Fwww.youtube.com%2Fchannel%2FUCjnsYt5r7DNJD3ZnqI10j8g&userId=1613865&signature=cd4b0a1c5dd743d5> > > > > On Tue, Apr 21, 2020 at 2:29 PM Ray <r...@solarray.com > <mailto:r...@solarray.com>> wrote: > Are you sure its just the transfer switching causing problems? I've seen > quite a bit of lights dimming, flickering, and strangeness with XW inverters > ( and many others) just in normal operation. Certain LEDs are particularly > sensitive, just another appliance coming on can cause noticeable flicker that > bothers some clients. Our solution was to try different brands of LEDs till > we found ones that had less trouble. I recall the Phillips ones being good, > but you would have to test a few to see. > Ray Walters > Remote Solar > 303 505-8760 > On 4/21/20 12:26 PM, Jason Szumlanski wrote: >> I have not looked into that, but the problem also exists transferring from >> inverter to generator. The owner wants "clean" power all the time, and just >> keeping him on inverter power all the time would be a solution. >> >> >> >> >> On Tue, Apr 21, 2020 at 9:35 AM Tump <t...@swnl.net <mailto:t...@swnl.net>> >> wrote: >> Have you shortened the transfer time from gen to inv, voltage “cut >> out"acceptance of the gen in power instead of their 90Vac to say 110V/L ? >> Raising the output voltage on the 6848s & gen set for VD/voltage sag issues >> under heavy loading? Watch this as sometimes under heavy loading it will cut >> the AC input. I use the config tool to address this kind of issue, gives me >> a bit more control. >> I have a client that has a large external battery charger similar to a fork >> truck unit that he alleges causes "dirty power" while the genset is >> supplying power to the charger, w/o charging thru the inverters. >> Unfortunately w/ the virus I have yet to confirm. >>> On Apr 21, 2020, at 8:27 AM, Jason Szumlanski >>> <ja...@floridasolardesigngroup.com >>> <mailto: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 <mailto: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/a4fb06ca4c0cde2d34822785976288dedc265ed3?url=http%3A%2F%2Fmembers.sti.net%2Foffgridsolar%2F&userId=1613865&signature=555a2c578afe741d> >>> e-mail offgridso...@sti.net <mailto:offgridso...@sti.net> >>> text 209 813 0060 >>> On Fri, 17 Apr 2020 14:21:14 -0400, Jason Szumlanski >>> <ja...@floridasolardesigngroup.com >>> <mailto: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 >>> <mailto: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/16bd147a09f41728d19f06ca6d10d29857ff91fa?url=http%3A%2F%2Flists.re-wrenches.org%2Foptions.cgi%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=88bb2bda832e4dec> >>> >>> List-Archive: >>> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >>> 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> t...@swnl.net > <blocked::mailto:t...@swnl.net%22%20%5Co%20%22blocked::mailto:t...@swnl.net> > www.SWNL.net > <blocked::http://www.swnl.net/%22%20%5Co%20%22blocked::http://www.swnl.net/> > Solarwinds Northernlights > Serving Mid Coast Maine & Northern California > 207-832-7574 Cl. 610-517-8401 > > Blair "TUMP" May > ******** MAINE'S CHARTER ******** > NABCEP "Certified PV Installer" > > ******** MAINE'S CHARTER ******** > Trace Xantrex "Certified" Dealer / Installer" >
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