Hi, i was looking at more reliable and affordable upgrades on my inverter, so i looked at the 5kva luxpower and the 6kva growatt, i noticed there is a max pv amp input for the mppt that ranged from 13a to 16a depending on the inverter. So i tried to check what is the rating on mine but can't seem to find anything, is there someone here with the same inverter or perhaps know the specs? 

Thanx in advance. 

1 hour ago, SetoKaiba said:

Hi, i was looking at more reliable and affordable upgrades on my inverter, so i looked at the 5kva luxpower and the 6kva growatt, i noticed there is a max pv amp input for the mppt that ranged from 13a to 16a depending on the inverter. So i tried to check what is the rating on mine but can't seem to find anything, is there someone here with the same inverter or perhaps know the specs? 

Thanx in advance. 

A very rough guide would be 48x60=2880W for the MPPT. If strings are 2 in series af 100V it works out to about 30A for the 2880W - let's call it 3000W.

My starting point if you don't have specs. 

Thanx for the reply, but now i am confused.. So there would be no issue if 30A is coming in from the panels? 

Yours is a low PV voltage model. Its absolute maximum never-exceed voltage is 145 V. Most inverters these days are high PV voltage, with never-exceed limits of 450 or 500 V or more. So most inverters (I think including Luxpower and many Growatts) are therefore not direct replacements. To update to one of those, you would have to reconfigure your panels for higher voltage.

Your model shows the output current of the solar charger, not the input current. That is 60 A, or about 3000 W. If your battery was at 50.0 V and the PV at 100.0 V, then it could convert 30 A of panel current to 60 A of battery-side current (into the battery, supporting the load, or a blend of both). If your panels are producing only say 75.0 V, then it could safely convert 40 A @ 75 V to 60 A @ 50 V. It's possible to safely "overclock" these solar chargers by about 20%, so you might have up to 3600 W of panels. The solar charger will regulate its use to limit its output on the battery-side to 60 A.

There are versions of your inverter that have a 80 A limit; that's a nice increase of 33%. But they are harder and harder to find, except for clones which are best left alone.

To upgrade just the solar part of your system, it might be easiest to add an external MPPT that connects directly to your nominally 48 V battery directly. Configure any new panels to suit that MPPT. Of course, if you also want more output power, then this is not suitable.