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Aquarium pump - Solar UPS

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  • Aquarium pump - Solar UPS

    In south Florida we have lots of sun and many storms in which power goes out. My goal is to run my aquarium 200 watt (AC) water pump for short-term, power outages.. I need it to auto switch and run max of 10 hours until I roll out the generator. For long term (hurricane) power would run the pump when the generator is being serviced, no longer than an hour. The inverter has a built in function that will run off the grid first, if power goes switches to battery. It accepts solar connections for charging as well as built in charger powered by grid. I assume I can do this with out solar, but I'm in love with the science behind it! What else do I need? How long will the pump run for? Any problems with my my equipment listed below? Your input is greatly appreciated. Thanks
    My equipment:
    (3) 30 watt panels, (1) 100 watt panel,
    (2) deka 6v 230AH batteries
    (1) victron Blue Solar 75/15 MPPT charge controller
    (1) MeanWell TN-1500-112 1500 watt Solar Inverter.

  • #2
    > Any problems with my my equipment listed below?

    yes. First, inverter is way oversized, 1500w for a 200w load. 18W self-consumption in standby mode, no spec given for idle mode, likely 50W
    Better size is a Morningstar SureSine inverter, 300w pure sine.

    Solar panels. Way undersized, you need close to 4x what you have. Your 200W x 10 H = 2,000 watt hours consumed
    Assume 4 hours good sun, you need to harvest 2500wh, needs close to 800w of PV panels.

    Battery needs to be 4,000wh of storage. A single 6V 200ah golf cart battery has 1200wh in it, 2 in series gives you 12V , 200ah or 2400wh Halfway there.
    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



    • #3
      Thanks Mike for putting things in perspective. I have a 600 watt pure sine wave samlex... would that work? I believe it's way more efficient than the other one. I would have to come up with a way for it to auto transfer from grid when power goes out. Any recommendations?


      • #5
        Using solar would be a waste of time and money, nor is it needed to do what you want. There is a much better way that cost a lot less.

        Just use the appropriate sized Battery Charger > Batteries > Inverter.

        For 200 watts x 10 hours = 2000 watt hours and one heck of a large system consisting of 600 watts of panels, 30 amp MPPT controller, into 24 volt 250 AH battery.

        All you need is a 24 volt 40 amp charger and a 24 volt 400 to 1000 watt Inverter. After 24 hours run the generator to recharge the batteries and ready to go another 24 hours.
        MSEE, PE


        • #6
          Yeah I'm learning my solar budget is large enough to charge my cell phone. Lol Thanks guys.