Don, We have had this happen when you auto calibrate the CT's and the CTs aren't properly positioned to see exported energy from the Sol-Ark inverter. Couple other times it took several calibrations and messing with opening and closing the cts and double checking splices on extensions of CTS.
Good luck! Roland Shackelford President / Owner NABCEP PVIP #091209-162 O 808.775.7410 | M 808.938.9239 | 45-487 Lehua St Honokaa, HI 96727 Power Solutions for Generations Renewable Energy Services, Inc. <https://www.renewablenergy.com/> " Where there is integrity, there will be trust. Where there is trust, there will be an atmosphere for success." - Sadhguru On Wed, Oct 25, 2023 at 11:18 AM don energysolarnow.com via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Just spent yesterday debugging a Sol-Ark 15 kW inverter phantom load > weirdness. > With Work Mode set at Limited Power To Home it seemed to get a bit schizo, > pulling around 6kW in from the grid on leg L1 and around 13 kW on the other > L2 leg, with 7kW of PV added. No house loads were involved. The monitoring > called this a 13 kW load. > I measured something like 50 amps on L2 and neutral; 120 Volts on L1 and > 125 Volts on L2 at the house. My Fluke clamp-on amp meter does not say > which way AC current is flowing. The utility meter showed it as power > coming in. > At the main meter panel about 150 ft away from the house the voltages were > better balanced; probably due to proximity to the utility transformer. > Those leg voltages were balanced when the inverter was shut down. > Oddly, this phantom loading decreased with decreasing PV production later > in the day. > Working with Sol-Ark tech support we (of course) downloaded new firmware, > then changed Work Mode to Limited Power To Load. After a couple of resets > this had the effect of allowing the inverter to cover just the loads in the > battery-backed subpanel; not those at the house main panel where the CT > sensors are located. The phantom 13kW load has not recurred. > Has anyone seen an inverter try to mix import and export on different legs > by creating phantom loads? > > Don Barch > Energy Solar > > > > _______________________________________________ > 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