I have searched the forums and ran across a couple Bluetti threads with similar questions but different enough that they don't give me the answers I'm looking for.
Worried about the VOC in this setup. Is there a way around it besides removing a pannel or going with a different one?
Bluetti AC200 Max
900W solar input rate
VOC 10-145
12amp
Looking at running 3 REC315PE 72 pannels because I can buy them new locally for $125/pannel.
Peak Power 315 w
VOC 45.8v
Impp 8.40a
Wired in series
3x315 = 945w -- Over panneled by 45w which should be fine because thats under theoretical perfect conditions right?
3x45.8 = 137.4v -- Meets VOC limit until temp goes less than 40F which is a problem in MN when we regulary see -30F.
Winter 3x45.8x1.25= 171.75 POP goes the weasel.
As I understand it, surpassing the VOC limit is a BIG no no and can damage the charge controller.
I can't run them in parallel or I go over the 12amp limit right?
Can I run a 3rd smaller pannel like a 200w Rich Solar to make up the difference?
315+315+200=930w
45.8+45.8+24.3x1.25(Temp correction factor)= 144.875 VOC
Feel like i'm running in circles.
Thank you for any insight you can give.
Worried about the VOC in this setup. Is there a way around it besides removing a pannel or going with a different one?
Bluetti AC200 Max
900W solar input rate
VOC 10-145
12amp
Looking at running 3 REC315PE 72 pannels because I can buy them new locally for $125/pannel.
Peak Power 315 w
VOC 45.8v
Impp 8.40a
Wired in series
3x315 = 945w -- Over panneled by 45w which should be fine because thats under theoretical perfect conditions right?
3x45.8 = 137.4v -- Meets VOC limit until temp goes less than 40F which is a problem in MN when we regulary see -30F.
Adjusting Solar Panel Voc for temperature
When designing you solar panel system, it is important to adjust you solar panel Voc for temperature in order to ensure you do not over-voltage the PV inputs of your solar charge controller. This paper shows how to calculate the Temperature...
diysolarforum.com
Winter 3x45.8x1.25= 171.75 POP goes the weasel.
As I understand it, surpassing the VOC limit is a BIG no no and can damage the charge controller.
I can't run them in parallel or I go over the 12amp limit right?
Can I run a 3rd smaller pannel like a 200w Rich Solar to make up the difference?
315+315+200=930w
45.8+45.8+24.3x1.25(Temp correction factor)= 144.875 VOC
Feel like i'm running in circles.
Thank you for any insight you can give.