Hi Jeff Here's the skinny on your questions. 1) you are using the Radian only as an AC Grid-Tie inverter - no batteries on it? *The Radian inverter has a bank of AGM Lead Acid Batteries on it. * 2) that you are aware that the AC Coupled wattage plus the DC wattage on the Sol-Ark's MPPTs must be within the total allowed for solar generation *Yes, we are aware of the limits of the inverters. * 3) that you have the AC Coupled output of the Radian connected to the GEN breaker of the Sol-Ark *This is the weird part of this system. Because of the client's needs/wants we are treating the Radian inverter as the grid and it is tied into the grid breaker on the Sol-Arks. Lesson learned here is never let the client drive the design. * 4) that you have the software set for the GEN breaker to be AC Coupled and have checked all other software items with Sol-Ark needed for AC coupling *We have the Sol-Arks set as AC coupled, but on the* grid breaker. *We cleared this design with Sol-Ark tech support by sending them the schematic before moving ahead with the design. They didn't see any issue with the design before we built it. *
*Please see the as-built schematic attached to the previous email. * *Thanks for looking this over. I feel like there must be something that we and Sol-Ark are missing. * Vince McClellan Energy Design NABCEP PV Installation Professional p. (541) 485-8122 f. (541) 338-8202 If you have received this email and are not the intended recipient please delete this email. Copying, or using any part, content, or attachment of this email is strictly prohibited. On Wed, Jan 19, 2022 at 7:05 PM Jeff Clearwater < je...@villagepowerdesign.com> wrote: > Yes what Jay said - need a block diagram with available power flows on > this one. If you've been working with Sol-Ark you probably covered the > basics but just for the rest of us to be assured: > > I assume: > > 1) you are using the Radian only as an AC Grid-Tie inverter - no > batteries on it? > 2) that you are aware that the AC Coupled wattage plus the DC wattage on > the Sol-Ark's MPPTs must be within the total allowed for solar generation > 3) that you have the AC Coupled output of the Radian connected to the GEN > breaker of the Sol-Ark > 4) that you have the software set for the GEN breaker to be AC Coupled and > have checked all other software items with Sol-Ark needed for AC coupling > > just as a starting base for us to understand what may be happening. > > And some of the techs at Sol-Ark are in training - have you talked to the > tech lead, Dustin Douglas? He's the official Sol-Ark rep on this list but > I just saw him at InterSolar and he said he has been just too busy to chime > in here much. I'm scheduled to speak with him soon - I'll see if he can > find the time if he hasn't already talked to you. > > > Best, > > Jeff > > > Vince McClellan <vi...@solarenergydesign.com> > January 19, 2022 at 3:15 PM > Is anyone on the list familiar with AC coupling Sol-Ark inverters? > > We haven't been able to AC couple an existing Outback Radian system to a > new system that we built with 3, Sol-Ark 12K inverters and 3, Blue Ion > batteries. Each time we have tested the system the Sol-Ark inverters accept > the power from the Radian inverter until we turn on the DC power from the > new solar array to the Sol-Ark inverters. As soon as there is > significant DC power coming from the solar array the Sol-Ark inverters > freq-watt turns on for a brief second and disconnects the Radian inverter > even when the Blue Ion batteries are below the programmed state of charge > threshold. If we don't turn on the DC power from the new solar array the > Radian will connect and stay connected. > > We have been working with Sol-Ark for several months now to get this > system to accept the incoming power from the Radian without freq-watt > kicking in on the Sol-Ark inverters and disconnecting the Radian inverter. > Sol-Ark has sent two software revisions to the Sol-Ark inverters and we are > still experiencing the same problem. > > Can anyone think of what we might be missing and where to direct our > troubleshooting efforts next? > > Thanks, > > Vince McClellan > Energy Design > NABCEP PV Installation Professional > p. (541) 485-8122 <%28541%29%20485-8122> f. (541) 338-8202 > > If you have received this email and are not the intended recipient please > delete this email. Copying, or using any part, content, or attachment of > this email is strictly prohibited. > > > _______________________________________________ > 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 > >
_______________________________________________ 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
