Need help in Panel selection

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  • AJ123
    Junior Member
    • Mar 2024
    • 4

    Need help in Panel selection

    Hi,

    Short background on my objective: I intend to create the ability to recharge an Anker F3800 Power Station with PV panels if needed during an extended grid outage. I will also be able to recharge the Power Station with a gas generator or the grid if it is up. The power station will plug into my generator panel instead of the gas generator, feeding selected circuits in my home.

    The limitations of the Power Station for solar recharging are 2 inputs of 1200 watts each, for a total of 2400 watts. The two inputs are each limited to 25 amps with a voltage supply from 32 to 60 VDC.

    My question: Would 3 panels with 390-watt Pmax, 39.64 Vmp, 9.84 Imp, and 48.6 Voc, wired in parallel, be a good selection for the limitations of the Power Station.
    There would be a total of 6 panels feeding the Power Station, 3 for each of it’s two inputs.
    If there is a better selection to be made, please share.
    Thanks for your help.
  • chrisski
    Solar Fanatic
    • May 2020
    • 547

    #2
    Seems good.

    May want to be sure that the

    -Anker power station connect to these panels. Does it have an MC4 or other unique apapter

    -The VOC is at a comfortable temp like 72 and goes up when it’s cold. Find what the temp compensation is and use the record cold in your area.

    Comment

    • AJ123
      Junior Member
      • Mar 2024
      • 4

      #3
      Thank you chrisski.

      From a temperature dependance table provided by the manufacturer, it appears that worst case, the VOC is 120% of cell temperature of 25C, in ambient temperature of 20C. So, at -50C, 48.6 VOC X 120% equals 58.32 VOC, still below the 60 volt limit of the Anker power station.

      Regarding the connections. The input is a XT60, which is readily available online. Should I consider a disconnect switch on the wall near the location of the power station to de-energize the power from the panels before unplugging the connectors from the power station? This would also be safer as the connectors will not be hanging around energized if not connected to the power station.

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