Hi Allen I haven't tried this with Schneider, but we do have one system that frequency shifts a Fronius IG Plus 10.0 from a pair of Sunny Islands. Maybe a different degree of shifting is present. SMA tech support felt confident.
Drake > Wrenches, > Core question first: Will a ~2010 Fronius IG-4000 respond properly > to the frequency shift regulation supplied by a new Schneider > XW+5548 or XW+6848? > <br> > Situation: I haven't seen the Colorado site; I'm working as a > consultant to produce an upgrade component list and will later serve > as a resource during local installation of the upgrade equipment. > Customer has hired me to turn a hodgepodge system into a GTBB > system. The system has two key parts: an existing SW5548 with > batteries, never properly installed (only AC1 in was ever connected > to a main load center!) with 3.1 kW of tracker-mounted PV through an > Outback FM60; and a roof-mounted 4kW array feeding the grid panel > via the IG-4000. As currently installed, nothing will operate as > wired during a grid outage, and a 240V AC well pump isn't > supported.<br> > <br> > The simple plan is to replace the SW5548 with an XW+5548 or 6848 > with Midnite E-Panel; replace batteries with Surrette FLAs; keep > existing arrays unchanged; use existing FM60 for smaller tracked > array; use existing Fronius IG-4000 but AC couple it to the output > of the XW. The customer understands that sell amperage is limited by > the inverter (to 20A @ 240V for the 5548, or 4,800W, or 27A @ 240V > for the 6848, or 6,480W) when the grid is up, but the full array can > charge the battery bank when the grid is down.<br> > <br> > Schneider tech support assures me that the XW+ is good in this > application, but I need to get an OK from Fronius about > frequency-shift compatibility. Fronius tech support tells me that it > may or may not work: the 0.4 hz shift is within the the normal > frequency tolerance for this model. While the tolerance window may > be tightened up in the field, such tightening may cause nuisance > tripping, especially with reactive loads like a well pump or A/C. > The tech suggested that we first test the frequency-shift approach, > and add a DC-coil contactor between the output of the Fronius and > the XW+ if it doesn't. > Has anyone AC coupled these two units? Did it work? Any unexpected > problems? Did you add a voltage-controlled contactor? What should I > advise my client? > Thank you, > Allan > _______________________________________________ > 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
