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New member from Minnesota with a lot of questions

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  • New member from Minnesota with a lot of questions

    I built a cabin 20 years ago with no power within 1 mile. I've been using an onan 4K generator hooked to an xantrex 3624 inverter/charger. Batteries are Napa 6 volt, 8 batteries wired in series then parallel. Last summer bought 4 harbor Freight 100 watt systems (16) panels and bought an epever tracer(an) 40A charge controller. very small system but works pretty well. fast forward to September 2019 and I impulse bought 2 500 watt panels model # XT M 500 from a now out of business company called (Tenk solar) out of minneapolis mn. I was told that these could be hooked up the same as I did with my harbor Freight Panels. After doing some research it appears that they have a hard dc high limit of 59 vdc and in reality I should be using micro inverters converting to ac at the panel. so here's my problem... i'm totally LOST! I have no idea on how to proceed? Do i need the micro inverters and then Hook up to the ac input side of my xantrex? do i just run the dc from the panels to my charge controller? or scrap the panels and change brands? Any help would be greatly appreciated!
    Foodplotter

  • #2
    You need a MPPT charge controller that will work with the Voc of your panels. Most good controllers have a mfg's site* to mock up your array and see if it is suitable
    MPPT controllers are most often rated in output Amps, because the inputs are often vastly different.
    Common max input voltages are
    40V - cheap imports
    75V - good domestic and better imports
    150V - top of the line models
    ( these are the max solar voltage input. Outputs are at 12, 24, and 48v battery bank voltages )

    *
    http://string-calculator.morningstarcorp.com/
    Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister

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    • #3
      Thank you Mike! something that simple has had me losing sleep for several weeks. Have a good day Sir!!

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