Dan Does it have System Control Panel (SCP)? If not, it's a must.
It's like having an Outback inverter with no Mate or a big LCD TV with no remote. Thank you, Maverick Maverick Brown Maverick Solar Enterprises, Inc. SunFlow Systems Office: 512-919-4493 Cell: 512-460-9825 Sent from an iPhone. > On Jul 18, 2016, at 7:57 PM, Dan Fink <danbo...@gmail.com> wrote: > > Thanks you for your help. I'm a poor off-grid guy. This should be a learning > experience then....the one time I visited the system around 10:AM,, both CCs > were in Bulk, and no grid blackout the night before. > Methinks I should also borrow a programming dongle from a colleague for this > one.... > > Dan Fink > Adjunct Professor of Solar Energy Technology, Ecotech Institute > IREC Certified Instructor™ for: > ~ PV Installation Professional > ~ Small Wind Installer > Executive Director, Buckville Energy > NABCEP Registered Continuing Education Providers™ > 970.672.4342 > > > >> On Mon, Jul 18, 2016 at 6:27 PM, Maverick Brown <maver...@mavericksolar.com> >> wrote: >> Dan >> >> Barring some non-factory-default settings, they are not likely running on >> battery power at night. >> >> When the grid is up, the inverter will go silent at night (asleep) [with --- >> three dashes on its LED display]. That's good. >> >> During the day, the inverter will "prevent" the battery voltage from going >> above its sell voltage (unless some other mode is on like Grid Support or >> Standby, etc.) The charge controllers will attempt to Absorb & Float, but >> the inverter will offload the energy by keeping the voltage at the Sell >> setting. I generally set Sell to the recommended Float Voltage++. I set the >> charge controller float to 1.0v higher and Absorb as appropriate. >> >> There is a lot more to unpack here. >> >> Flooded batteries will consume a good amount of power just to maintain >> float. >> >> As a defense against sulphated plates forming, I program the inverter EQ >> button for a heavy Absorb / mild EQ and instruct the customer to press it >> (every other month opposite month from watering??) >> >> Are you getting 20-25 kWh per day in production? >> >> PS having the inverter always feed the critical loads panel is exactly it's >> intended use. >> >> Thank you, >> >> Maverick >> >> >> Maverick Brown >> >> Maverick Solar Enterprises, Inc. >> SunFlow Systems >> Office: 512-919-4493 >> Cell: 512-460-9825 >> >> Sent from an iPhone. >> >>> On Jul 18, 2016, at 6:50 PM, Dan Fink <danbo...@gmail.com> wrote: >>> >>> Maverick; it's 6.0 kW of PV, 2 Midnite Classic 200s, Conext XW+ 5548, and 8 >>> Crown Embassy VRSLA 6CEA390 for 390 amp-hours, 48v. Concerns me to be >>> cycling those batteries every night when it's not supposed to happen as per >>> the permit package. >>> "Notes - Battery Backup: During an outage, an automatic transfer switch in >>> the inverter opens the grid interconnect, isolating the inverter from the >>> utility to prevent back-feeding the local power lines. The inverter then >>> draws from the battery bank to provide AC power to the backup sub-panel. >>> Battery power is only used to provide power to the backup sub-panel. The >>> Battery inverter only sells energy to the grid from the solar array when >>> available and not from the battery bank. The battery backup inverter is UL >>> 1741 and IEEE 1547 compliant." >>> >>> Dan Fink >>> Adjunct Professor of Solar Energy Technology, Ecotech Institute >>> IREC Certified Instructor™ for: >>> ~ PV Installation Professional >>> ~ Small Wind Installer >>> Executive Director, Buckville Energy >>> NABCEP Registered Continuing Education Providers™ >>> 970.672.4342 >>> >>> >>> >>>> On Mon, Jul 18, 2016 at 5:23 PM, Maverick Brown >>>> <maver...@mavericksolar.com> wrote: >>>> Dan >>>> >>>> Does the inverter go silent at night? (---) on the inverter display? >>>> >>>> There are lots of settings that can influence sell amount. >>>> >>>> What type and size is the battery bank? >>>> >>>> What is the solar size? >>>> >>>> Thank you, >>>> >>>> Maverick >>>> Cell: 512-460-9825 >>>> >>>> Sent from an iPhone. >>>> >>>>> On Jul 18, 2016, at 5:56 PM, Dan Fink <danbo...@gmail.com> wrote: >>>>> >>>>> Installer went out of business, all I have to troubleshoot with is an >>>>> as-built 3-line that "may or may not be right." The charge controllers >>>>> are a pair Midnite Classic 200s. Customer complained that system selling >>>>> only 2/3 of what was predicted back to the utility; that appears to be >>>>> because everything out of his critical loads subpanel is running off the >>>>> battery bank all night, every night, grid or no, so it takes 1/3 of the >>>>> day to get the batteries charged up again every day and start selling to >>>>> the grid. >>>>> >>>>> I have very little experience with the XW+ thus my question for the folks >>>>> here. My plan for next week is to show up, make my own as-built 3-line, >>>>> and recommission the inverter. Anyone else seen this sort of thing >>>>> before? Hard to believe that an electrician would mis-wire or not wire >>>>> the bypass, I'm thinking software setting. >>>>> >>>>> >>>>> Dan Fink >>>>> Adjunct Professor of Solar Energy Technology, Ecotech Institute >>>>> IREC Certified Instructor™ for: >>>>> ~ PV Installation Professional >>>>> ~ Small Wind Installer >>>>> Executive Director, Buckville Energy >>>>> NABCEP Registered Continuing Education Providers™ >>>>> 970.672.4342 >>>>> >>>>> >>>>> _______________________________________________ >>>>> 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 >>> >>> _______________________________________________ >>> 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 > > _______________________________________________ > 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 >
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