Hi William, We have a half dozen plus off grid systems using SolArk inverters and TIGO optimizers. They work well and the TIGO's, from my experience, have been really reliable. The necessary 12 volt signal can come directly from the relay in the SolArk inverter.
Best, Daryl DeJoy NABCEP Certified PV Penobscot Solar Design > Friends: > > > > It is quite rare for us to install off-grid systems on roof-tops. We have > one coming up with about 20kW on a large barn roof. This will be our > first > off-grid with a module-level rapid shutdown requirement. I see no > exemptions from RSS for off-grid systems in the code. I have looked at > the > options and this is what I have found: > > > > 1. Fire Raptor > > 2. Tigo TS4-F > > 3. AC coupling with micro-inverters or optimizers > > > > No one of these approaches seems ideal. The fire raptor requires extra > wiring for control leads. The Tigo requires a wireless control system > which worries me about reliability. With AC Coupling systems floating the > proposed AGM batteries may be awkward. Furthermore, with AC coupled > systems one cannot charge batteries unless the mini-grid is operational, a > big problem. > > > > Have any of you implemented module-level RSS on a battery-based inverter > system? I looked in the archives and found no threads that apply. Thank > in advance. > > > > William Miller > > > > Miller Solar > > 17395 Oak Road, Atascadero, CA 93422 > > 805-438-5600 > > www.millersolar.com > > CA Lic. 773985 > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > 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/[email protected]/ > 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: [email protected] 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/[email protected]/ 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
