I have 2 Victron 250/100 MPPTs and am planning to run NewPowa 240W solar panels due to mounting restrictions. It is connected to an 800Ah 12V battery bank, possibly expanding to 1200Ah. I am trying to figure out the max number of 240W panels I can run in a series/parallel configuration. I have 8 panels in hand, figuring I was going to run those 8 panels in a 4s2p configuration. I have run the numbers thru various solar charger controller calculators and am getting conflicting information.
Can someone more familiar with MPPT sizing run the numbers to clear my brain fog?
Here are the details of the panels:
PRODUCT CODE - NPA240S-12H
Maximum power (Pmax) - 240W
Voltage at Pmax (Vmp) - 23.32V
Current at Pmax (Imp) - 10.16A
Open-circuit voltage (Voc) - 27.08V
Short-circuit current (Isc) - 10.71A
Temperature coefficient of Voc - -(80±10)mV/°C
Temperature coefficient of Isc - (0.065±0.015)%/ °C
Temperature coefficient of power - -(0.5±0.05)%/ °C
NOCT (Air 20°C; Sun 0.8kW/m² wind 1m/s) - 47±2°C
Operating temperature = -40°C to 85°C
Maximum system voltage - 1000V DC
Power tolerance - ± 3%
Maximum Series Fuse Rating - 15 A
Can someone more familiar with MPPT sizing run the numbers to clear my brain fog?
Here are the details of the panels:
PRODUCT CODE - NPA240S-12H
Maximum power (Pmax) - 240W
Voltage at Pmax (Vmp) - 23.32V
Current at Pmax (Imp) - 10.16A
Open-circuit voltage (Voc) - 27.08V
Short-circuit current (Isc) - 10.71A
Temperature coefficient of Voc - -(80±10)mV/°C
Temperature coefficient of Isc - (0.065±0.015)%/ °C
Temperature coefficient of power - -(0.5±0.05)%/ °C
NOCT (Air 20°C; Sun 0.8kW/m² wind 1m/s) - 47±2°C
Operating temperature = -40°C to 85°C
Maximum system voltage - 1000V DC
Power tolerance - ± 3%
Maximum Series Fuse Rating - 15 A
