Just a couple add-on comments I’d lower the AC2 breaker size setting to around 40A each inverter. Double check the generator actually goes to AC2 terminals.
But, the better setting would be to change the charge percent on the Charger setting for both inverters, maybe dedicate up to 5kW to battery charging?? So, 2.5kW per inverter, about 35% each inverter. (2500W / 50V / 140A Charger). The charger is power factor corrected and generally does a great job not messing up the waveform. Also, keep in mind generator ratings are Marketing values. I would suggest 20kW x 0.80 or 16kW as a working number for the generator. You can measure the voltage and frequency of the generator under high load to get an idea how it likes being loaded down. Next, see if a timer can be installed on the hot water heater to move that load to a non-dryer time of day. That can help with overall generator loading. One customer chose 1AM and that works for them. Another chose 3PM and that works as well, especially with a larger solar array. When you get the gateway and go to do the software upgrade, the inverters will go into standby, so manually start the generator, switch to bypass mode (if necessary) so if you need power to complete the upgrade, you will have it. Good luck and enjoy! Maverick Brown Off-Grid Solar Commander since 2006 Maverick Solar Enterprises, Inc. • Solar Commander Remote Power • SunFlow Systems Cathodic Protection maver...@mavericksolar.com 512-460-9825 > On Jun 29, 2021, at 7:51 AM, Chris Schaefer <ch...@solarandwindfx.com> wrote: > > > After doing some additional reading of the manual and with everyone's great > insight I'm leaning towards the AC2 breaker sizing setting within the SCP. > Given that default is 60 amps and that there are two inverters that would > tell me that both charging and loads could draw as much as 120 amps. Given > that the main output breaker on the 20kw gen is 80 amps I believe this might > be part of the issue. Additionally, I'll be purchasing the Insight tool so > that I can upgrade the firmware as the client will, once the grid is present > need this to select the correct grid code to match the area's utility. In > reading the firmware attachment that I believe Dave sent, what caught my eye > at the end under Fixes: it states "fixes AC2 generator qualification issues". > I'll be sure and update you on my findings. > > Sincere Thanks, > Christopher > >> On Mon, Jun 28, 2021 at 7:58 PM Mac Lewis <maclew...@gmail.com> wrote: >> Hi Chris, >> >> I recommend enabling Gen support mode and lowering the gen support level >> until the generator sounds good. I suspect that the generator can't handle >> full battery charging and loads simultaneously. You may also want to turn >> down the AC2 In breaker size for the Gen Input, this will determine how much >> the XW allows to be pulled through the Input terminals. Also, be sure they >> are using AC2 right now for the generator input, otherwise, you may need to >> adjust the AC1 parameters instead (or swap terminals). There is also a Gen >> Amps setting that can be lowered, and you can lower the max charge rate as >> well. >> >> I believe that Schneider treats the AC input as either a grid (can be >> backfed on AC1 terminals) or a generator (cannot be backfed on AC2 >> terminals), so I'm not sure if there is equivalent to the Outback Input >> modes. There are some advanced grid interconnection settings but I don't >> think that applies here. >> >> Let us know what you find out. >> >> >> >> >>> On Mon, Jun 28, 2021 at 3:36 PM William Miller <will...@millersolar.com> >>> wrote: >>> Chris: >>> >>> >>> >>> I have little Schneider experience but I will describe a problem with an >>> Outback system that might be relevant: When the Outback Radian inverters >>> would charge from the generator, in certain modes (there are a several >>> generator utilization settings) the charging circuits would inject large >>> amounts of THD onto the inverter output circuit. This would cause breaker >>> tripping and other problems. >>> >>> >>> >>> To track this down we had to rent a pricey power quality analyzer. Here is >>> a link to a write-up I did. >>> >>> >>> >>> Hope this helps. >>> >>> >>> >>> William Miller >>> >>> >>> >>> Miller Solar >>> >>> 17395 Oak Road, Atascadero, CA 93422 >>> >>> 805-438-5600 >>> >>> www.millersolar.com >>> >>> CA Lic. 773985 >>> >>> >>> >>> >>> >>> From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On >>> Behalf Of Chris Schaefer >>> Sent: Monday, June 28, 2021 1:49 PM >>> To: RE-wrenches >>> Subject: [RE-wrenches] schneider xw-Pro issue with genny running >>> >>> >>> >>> G'day All, >>> >>> >>> >>> I recently got pulled into someone else's mess on a twin xw-pro 6848 with a >>> Generac 20kw air cooled genny. A little back story. The client is currently >>> off grid with basically an all electric house. I know, I know, lol. The >>> intent is to bring the grid in but that has been slowed for various >>> reasons. On to the issue. So the electric appliances do well until the >>> genny is running/charging and then certain items like the electric dryer >>> don't like to operate at this time. Turn the genny off and it runs fine. >>> The genny only has 900 hours on it and is serviced by a local genny >>> company. The client has no internet or InsightHome, only the SCP along >>> wiith a Schneider AGS module. >>> >>> >>> >>> Admittedly I'm not overly familiar with the Schneider product line. I've >>> reviewed every screen on the SCP looking for further genny settings but see >>> no detailed adjustment that might be able to be made, to "smooth" things >>> out so that the genny will play nice with the XW Pro and the dryer. >>> >>> >>> >>> I have reached out to Schneider directly but still no response after 5 >>> days. Looking for any insight (no pun intended) from the Schneider users >>> out there. >>> >>> >>> >>> Sincerely, >>> >>> Christopher- >>> >>> Chris Schaefer’s >>> >>> Tel/Fax 585-229-2083 or Cell 585-748-1870 >>> 5115 South Hill Road ~ Canandaigua New York 14424 >>> www.solarandwindfx.com ~ E-mail: ch...@solarandwindfx.com >>> >>> >>> >>> Thomas Jefferson, the author of our great Constitution, once said, >>> "democracy" will cease to exist when you take away from those who are >>> willing to work and give to those who would not." >>> >>> _______________________________________________ >>> List sponsored by Redwood Alliance >>> >>> Pay optional member dues here: http://re-wrenches.org >>> >>> 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 >>> >>> There are two list archives for searching. When one doesn't work, try the >>> other: >>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>> >>> List rules & etiquette: >>> http://www.re-wrenches.org/etiquette.htm >>> >>> Check out or update participant bios: >>> http://www.members.re-wrenches.org >>> >> >> >> -- >> >> >> >> Mac Lewis >> >> "Yo solo sé que no sé nada." -Sócrates >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> >> 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 >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> > > > -- > Chris Schaefer’s > > Tel/Fax 585-229-2083 or Cell 585-748-1870 > 5115 South Hill Road ~ Canandaigua New York 14424 > www.solarandwindfx.com ~ E-mail: ch...@solarandwindfx.com > > > > Thomas Jefferson, the author of our great Constitution, once said, > "democracy" will cease to exist when you take away from those who are willing > to work and give to those who would not." > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > 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 > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org >
_______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org 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 There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
