Hi Allen, Another thing that you may want to talk with Schnieder about is if the "max sell" about applies if there is AC coupling is involved. I believe that the max sell amps is talking about how much the XW+ can pull off the DC buss, not necessarily how much will flow to the main service through its terminals via AC coupling. It may not be a bottleneck in your case.
Good Luck On Tue, Apr 5, 2016 at 3:13 PM, Jeremy Rodriguez <allsolarjer...@msn.com> wrote: > Have installed a 5548 and 6048 XW with IG Plus 10.0 with fair results. > On/Off when AC coupled during the test phase. I have not heard any > complaints from the homeowner. > > Jeremy Rodriguez > Solar Installation And Design Expert > All Solar, Inc. > 1463 M St > Penrose Colorado 81240 > > Sent by Jeremy's iPhone. Sorry for typos and shorthand! > > On Apr 4, 2016, at 1:34 PM, Allan Sindelar <al...@sindelarsolar.com> > wrote: > > 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? > > 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. > > 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. > > 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 > -- > > *Allan Sindelar* > <al...@sindelarsolar.com>al...@sindelarsolar.com > NABCEP Certified PV Installation Professional > NABCEP Certified Technical Sales Professional > New Mexico EE98J Journeyman Electrician > Founder (Retired), Positive Energy, Inc. > *505 780-2738 <505%20780-2738> cell* > > > > _______________________________________________ > 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 > > > -- Mac Lewis *"Yo solo sé que no sé nada." -Sócrates*
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