Connecting Inverters in Series

Discussion in 'Connecting to the Grid' started by windbag, Feb 9, 2011.

  1. windbag

    windbag WindyNation Engineer


    I am new here and I see that some of you are experts with these small grid tie inverters.

    I am wondering if anyone has tried connecting 2 of these inverters in series on the DC input side like this.


    Not sure if this would even work or if there would be any problems doing it this way.

  2. windbag

    windbag WindyNation Engineer

    I'll just mention that I contacted about this question, and they said that it should work but they wanted to set it up and test it in their lab first. So, they told me to wait so they can run with it for a day or so and confirm everything looks OK. I was impressed that they wanted to test it out first before selling me anything. That's a good sign that they are interested in satisfied customers rather than just saying anything to make a quick sale. They also sent me a data sheet that I requested. Great customer service so far on the couple questions I asked them.
  3. Minnesota

    Minnesota WindyNation Engineer

    That's a great sign. I did contact them a few weeks ago to get a loaner for me to do video on but never heard back. I have a pretty good following on YouTube for GTI testing.
  4. windbag

    windbag WindyNation Engineer

    Enspura responded back and informed me that the inverters don't work properly when hooked up in series on the DC side. They will only work when hooked up in parallel.
  5. NEOH

    NEOH WindyNation Engineer

    Aggreed, it is NOT a good idea to wire the Inverter inputs in series. I am assuming that your inverters require a 24V DC input? Can you bring in a third wire from the middle of your Battery Bank? Connect this third wire from the middle of the Battery Bank to the +/- jumper that you have connected between the two Inverters. This will provide a stable 24 Volts to both Inverters. This will work but it may discharge each half of your battery bank slightly differently.

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