June 8, 20233 yr I'm connecting 1 string of 4 450W solar panels to my Luxpower SNA 5000. Must I split the supply in two before connecting it to the inverter or can I keep the single supply and use only one of the PV inputs?
June 9, 20233 yr Per specs Inverter max PV input is 6000w with max Voltage 480vdc and MPPT Range @ Operating Voltage: 100VDC ~385 VDC. Your 4 panels on one string will easily be under that (1800w currently and about 180v ), you want to be between the 100-385V then it will charge, 2 panels on a string will only give you around 88v. Depending on the Open Circuit voltage of your panels (should be around 44v) you can connect up to 10 in series without any problem.
June 9, 20233 yr Just use 1 MPPT for these 4 panels. You can always use the 2nd MPPT later if you intend to expand your solar array. The advantage of 2 arrays is that you can have 2 strings facing different directions to maximise the solar yield throughout the day. You can have up to 3200W per MPPT as long as the voltage remains within 120-385Vdc.
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