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Man This solar thing drive me nuts. help

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  • #31
    Lucky thing, it not really gone down there except 2 occassions. so I will set it at 48.20 volt. thank you.

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    • #32
      The numbers still don't add up

      Hi guys,

      Just got this DC amperes clamp meter,

      http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1

      Check the battery bank charging number and get these numbers, but they are not really add up.

      10am in the morning;
      charge controller 1 deliver 45 amps@ 52volt, cc2 deliver 20 amps@52 volts, the inverter draw 41 amps, Battery charging 30 amps.

      11am in the morning, cloud passing

      cc1 deliver 9.5 amps @54volt, cc2 deliver 4.2 amps @54 volts. inverter draw 40.5 amps @54 volt, battery discharging 16 amps.

      12:30 pm

      cc1 deliver 41amps @55volt cc2 deliver 19 amps @55 volt, inverter draw 40 amps @55volts battery charging @32 amps.

      2:30 pm cc1 deliver 34.6 amps @58volt absorbing, cc2 deliver 15.6 amp @58volt. mppt bulk. inverter draw 63 amps @58volts battery charging 4 amps.

      When I add up this numbers I got from 6 amps to 16 amps extra. where is the extras come from. anyone have any idea? Look like the system is charging the battery on the background.

      Thanks

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      • #33
        Originally posted by paulcheung View Post
        Check the battery bank charging number and get these numbers, but they are not really add up.

        10am in the morning;
        charge controller 1 deliver 45 amps@ 52volt, cc2 deliver 20 amps@52 volts, the inverter draw 41 amps, Battery charging 30 amps.
        So where do you see a problem Paul?

        All I see is 6 amp meter error between 3 measurements.

        First thing you learn in electrical school is we measure with a micrometer, mark it with chaulk, and then cut it with an axe.
        MSEE, PE

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        • #34
          The last one the error went up to 16 amps, well I guess the system is working then. thanks

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