olar Boost / C40 test [RE-wrenches]

Allan Sindelar, Positive Energy, Inc. allan at positiveenergysolar.com
Fri May 4 14:55:58 PDT 2001


Blair,
    A PV input voltage of 28.5 is low enough to suggest that one or more of
these may apply:
* An extremely hot day and module temperature
* Excessive input voltage drop
* MPPT adjustment on the SB50 not set optimally.
I would expect to see an input voltage of around 35 volts before temperature
deration. Any ideas?
Allan at Pos Energy

----- Original Message -----
From: "blair Tump may" <tump at midcoast.com>
> Site; N44*   W 069*    temp amb; 92.2* panel top temp;117* back of panel
> 124.2* array ang;44* facing;185* M Elv;170'
>   System SW 4024 * 375 surrette batts.15 585 panels & 1 590 panel wired
24vt DC
>
> C40'    Battery voltage;25.46  panel voltage 26.32 DC amps in 39.5-40  AC
> amps to grid 7.62  Brand WT Mtr  930 Avg
>
> Solar Boost 50; Batt.Vt.25.46 Panel Vt.28.5 DC Amps in 40.9-41.2  AC Amps
> into grid 8.1 Brand WT Mtr; 970 Avg


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