3 phase, battery based off grid solar system?

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  • ligwyd
    Junior Member
    • Mar 2016
    • 4

    3 phase, battery based off grid solar system?

    HI there,
    What is the consensus for the top quality most reliable 3 phase battery based off grid solar system. I gather that most manufactures require 3 inverters. Would you also need three battery banks?
    Any feed back is appreciated, or in point in the right direction hopefully.
  • Mike90250
    Moderator
    • May 2009
    • 16020

    #2
    Schneider makes huge 3ph GT systems, so I expect their Off Grid systems would be as good. Battery size would be determined by mfg's min recommendation, and your loads & runtime. For your backup, you will need a 3ph generator,
    You might consider conventional off grid, and just supplemental generator only when you need 3ph.
    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

    Comment

    • sdold
      Moderator
      • Jun 2014
      • 1424

      #3
      Hi lgwyd, sorry about the trouble starting a new thread, I moved your question to a new thread here, let us know if you want it in a different area:

      https://www.solarpaneltalk.com/forum...gs-and-com-box

      Last edited by sdold; 09-22-2021, 01:39 PM.

      Comment

      • solarix
        Super Moderator
        • Apr 2015
        • 1415

        #4
        Three SMA Sunny Islands would work. Usually set up as one battery bank they all feed off. One unit is the master with two slaves.
        BSEE, R11, NABCEP, Chevy BoltEV, >3000kW installed

        Comment

        • Ampster
          Solar Fanatic
          • Jun 2017
          • 3649

          #5
          Originally posted by solarix
          Three SMA Sunny Islands would work. Usually set up as one battery bank they all feed off. One unit is the master with two slaves.
          So to make it clear to other readers, it is not the battery that is three phase as the title incorrectly suggests.
          Last edited by Ampster; 09-23-2021, 12:42 AM.
          9 kW solar, 42kWh LFP storage. EV owner since 2012

          Comment

          • Mike90250
            Moderator
            • May 2009
            • 16020

            #6
            The title has been clarified with an added comma
            3 phase, battery based
            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

            Comment

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