First, I checked the power on the 500w tracking array, to get a feel for the sun.
84.8 volts open, 68.2v loaded @ 6.8A (464 watts), slightly under the 490w I saw earlier.
I disconnected the load cable from the tracker and moved it over to the new fixed array.
The 1KW 10 ohm load measured 10.5 Ohms. The line has about 0.5 ohms of loss.
This resistance is too high to get a good full power test on single panels, but a half power test is better than none.
Left Panel:
No Load = 34.88V
Loaded = 32.51V
Loaded = 3,17A
Loaded = 103W
Shorted = 7.34A
Right Panel:
No Load = 34.47V
Loaded = 31.96V
Loaded = 3.13A
Loaded = 100W
Shorted = 7.58A
The last test was the 2-panel series test. Which turned out to be a full power test.
Open voltage = 69 to 70 volts
Under load = 57.2V
Amps with meter = 6.94A
Amps with clamp = 7.3A
The average wattage ? 397 to 417 watts.?.
The sun light was changing slightly and the numbers were drifting around, so this last test wasn't very accurate,
but I'm happy to see the results are in the ballpark of the spec.
