Outback grid tie ineffciency [RE-wrenches]

Carl Hansen Solarwks at cybermesa.com
Mon Jul 23 09:53:59 PDT 2007


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Greetings,

  I've got a GTFX installed with 1400 watts of PV, the output of the
inverter goes through the utilities REC meter before it ties into the  main
panel, so the REC meter records all the days output from the inverter into
the grid. What I'm finding is the REC meter records between 1 K watts to 1.5
K watts less at the end of the day than the MX 60 tells me passed through
it. So, I'm seeing between 15% -20% loss of power.  I know the inverter has
some power transfer inefficiency and it draws power over night standing at
idle, and the batteries get recharged in the morning,but the batteries are
at 25.4 in the morning before sunrise, is this what I have to expect from
the system?

Carl Hansen
Hansen&Sun Elect.


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