It was under stc. 25 degrees f. Amps should be 16. 2 series strings in parallel. 30voc 8sc eachNo. There's only a problem if you're testing them at high noon with the sun directly overhead during the time of year you get the most and intense sunshine.
It was under stc. 25 degrees f. Amps should be 16. 2 series strings in parallel. 30voc 8sc each
No. There's only a problem if you're testing them at high noon with the sun directly overhead during the time of year you get the most and intense sunshine.
The panels are 4 trina 250 watt. I am getting the 60vdc. But only 3 to 4amps. Measured by a victron 150 /35. Charge controller. 2 series strings in parallel.Are you sure the Voc is only 30V?
Vmp * Imp = panel Wattage.
Full spec of the panel?
Make and model of the SCC?
Batteries type?
Battery is a 12v 200ah4 250 watt panels, rated at 30voc and 8.5sc
Hi all, my panels put out 60 vdc, only 3-4 amps . Is there a problem with diodes?
The Trina 250W panels (TSM-250PA05) have a Vmp of 30.3V, Imp of 8.27A, Voc of 37.6V, and Isc of 8.85A.The panels are 4 trina 250 watt. I am getting the 60vdc. But only 3 to 4amps. Measured by a victron 150 /35. Charge controller. 2 series strings in parallel.
ok, thank you. I figure if I had direct sunlight on a 25 degree day i should be getting at least 8 amps when 16 amps would be the best I could get. thanks for the proper 2s2p denotation.
STC is at 25ºC (77ºF), not 25ºF.It was under stc. 25 degrees f.
I think the state of charge dictates to the charge controller how much the battery needs, not how much comes from the panels.
I.E. bulk, absorption, float. I understand the irradiance factors involved.
I obviously should not use the term STC loosely. I was simply trying to make understood the conditions were very good, i.e. full sun, good angle, low temp. lower temp being better than stc.A 1000W array should be giving you between 0W and 1000W at midday depending on the arrangement (series/parallel), the angle they are mounted, the direction they face, any shading, sky conditions, and temperature. And it also depends on the battery SOC. If the battery is nearly full you'll get very little out the panels no matter what the conditions.
STC is at 25ºC (77ºF), not 25ºF.