marzoid

Folks, Good morning. i've been running solar assistant on a orange pi LTS for a while with no issues, and yesterday unfortunately the mecer inverter was giving an error, and i decided to reboot everything (inverter, batteries) to include the Orange pi, and the orange pi didn't come back up. Tried a bunch of things, like replacing the ethernet cable (from router to pi), different power supply, still nothing. I can ping the device, and it does start up solar assistant partially. I can access the dashboard, but if i click on Charts, totals or configuration tab, it just errors out, which pointed me to either a failing / bad Orange pi or a possibly corrupt OS / Micro SD card. Next troubleshooting step, is i downloaded the OS image onto a spare SD Card, which i inserted into the same Orange pi, and it booted up just fine, and i can access all tabs in solar assistant, which means the hardware is fine, but 99.9% the OS on the original SD card is corrupt. My only concern is the 24 months of historical data on the original / problematic SD card, and how to move it over to the new working SD card. I'm sure i can download a linux file system reader on my windows PC, in order to read the problematic SD card, but is there a way to copy the data / files over from the problem SD card to the new SD card ? The easiest method, would have been to backup the data from within solar assistant on the problematic SD card, but because i can't access the configuration page of solar assistant, unfortunately that's not possible. Any ideas or tips, would be sincerely appreciated. Regards

Correct. When i was doing my calculation, i was getting minimum of 4 panels in a string, and max of 10, before taking into account temperature compensation. Once i take into account temp compensation, then the max of 10, drops down to either 9 or 8 as you mentioned. question i have was on whether to use one or both strings in each MPPT. My inkling was to put the 8 or 9 panels in series on each MPPT, but then the label, saying each string should have less than 3250 has me worried. The other option was to put 4S on each string, totalling 8 per MPPT, but from another thread i read, it mentioned, that when using both strings of the MPPT, the amperage of each string is reduced by half, so whereas, using a single string per MPPT, would give me 26A, using both strings per MPPT, would limit each string to 13A, which if correct, is less than ideal, and thus the confusion Regards

Good Day Deye / Sunsynk Guru's I have 20 x Canadian Solar 595W Panels from a previous setup, that i would like to use on my newly purchased Deye 8Kw, but i'm getting my figures wrong (i think) My initial thinking was putting 10 x 595W panels, on each of the MPPT's would work (either using one or both strings on each MPPT), so 5,950 watts on each MPPT, totaling 11,900 overall, although the Deye only recognises 10,400 Watts Specs for the Deye 8KW Hybrid Inverters: Max. DC Input Power - 10400W PV Input Voltage - 370V (125V~500V) MPPT Range - 150V ~ 425V Start-up Voltage - 150V PV Input Current - 26A + 26A Max PV ISC - 44 ADC + 44 ADC No. of MPPT Trackers - 2 No. of Strings Per MPPT Tracker - 2 + 2 Specs for the 595w Mono Panels: Maximum Power - Pmax (W) - 595W Open Circuit Voltage - Voc (V) - 41.1V Short Circuit Current - Isc (A) - 18.42A Maximum Power Voltage - Vmpp (V) - 34.7V Maximum Power Current - Impp (A) - 17.15A While reading the side of the Deye inverter, which has the specs mentioned, i noticed a label at the bottom, with the wording "Max DC input power of each string should be less than 3250W and it's VOC should be less than 450V in zero-export application" One point to note, is that i do have a Smart meter, and can feed back to the grid, to gain credit units, so the setup should maximize PV output, to 1) firstly charge batteries, 2) provide power to essential loads, 3) provide power to other loads before CT, and lastly 4) export any remainder back to the utility This note that each string should be less than 3250W has introduced doubt on what my best setup is to maximize use of the most number of panels Any guidance or assistance is sincerely appreciated Regards