I used the MPPT calculator for a 3S2P configuration of 380W panels, and it calculates a MPPT 150/35.
The 35A of the MPPT seems a bit on the low side (6x380W=2280W /57.6=39,58A).
Also the solar system will be in Thailand, and i want the equipment as cool as possible.
Will there be a pro’s/cons if I buy a MPPT 150/45 so the SCC doesn’t have to work at its limit?
Hi whats the Isc of the panels? I think your calculation is off
But yes you can use a 150/45 instead of the 150/35
ISC = 11.47 at STC
Ok so 3S2P is max 11.47x2= about 23A
Not 39A
Panels JAM60S20-380MR
Voc=41.62
Vmp=34.77
Isc=11.47
Imp=10.93
3x 34.77=104V and 2x10.93=22A solar panels
but the charging voltage will be 57.6 volts and around 40A right?
Yes you are right, but thats only at max power
You can use a 35, but if you think your closer to max power all the time take the 45
Yes he was right about that, i was confused about his question!
I have very similiar panels in North QLD australia. I have 2 strings over 2 MPPTs.
40.8Vmpp x 9.56Imp x 7 = 2730W. String Vmpp theory should be 285V. It will depend on the panel’s performance. If you get budget ones you might not even get close when they heat up I have 390W Hyundai Shingled.
I have a 100A charger,
