14V Grid Tie as a dump load

Discussion in 'Dump Loads' started by Minnesota, Sep 3, 2010.

  1. Minnesota

    Minnesota WindyNation Engineer

    I see that some low end grid tie inverters are rated to begin inverting at 14V. Any reason these can't be used to prevent the a 12V battery bank from overcharging, such as having a series of 4 300w (derated to 150w) ones to sevice a WN500? These are less than $100 units. I've not seen or read of anyone trying this and it would not require relays.
  2. windyguru

    windyguru WindyNation Expert

    It might work but there is one definite problem. What happens when the grid goes down and it will from time time.
  3. Minnesota

    Minnesota WindyNation Engineer

    That is an excellent point! One may need a relay that "unpicks" when the A/C is absent senting the DC to a passive load. An easy circuit. Thanks!
  4. Andy R.

    Andy R. WindyNation Engineer

    Hey, this was posted in Sept. of last year. We now know the "Larry" guy knows how to fix it!

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