Hi all.

I have an Axpert type 3kva inverter .

Apparently I can only connect up to 1200w of solar into my pwm charge controller.

I’ve recently got some good luck and got 6x 540w 48v solar panels and have connected 2 in parallel, this doesn’t work very well for me and would like to upgrade the charge controller.

I will be upgrading my system in the next 6 months when I renovate my house so I’m looking for a solution for now.

Is it possible to put a new charge controller into my inverter that can take all my panels or maybe an external charge controller that can still communicate with my inverter as it currently does.

pwm or mppt ?

Thanks guys.

 

1 hour ago, Grant P said:

Hi all.

I have an Axpert type 3kva inverter .

Apparently I can only connect up to 1200w of solar into my pwm charge controller.

I’ve recently got some good luck and got 6x 540w 48v solar panels and have connected 2 in parallel, this doesn’t work very well for me and would like to upgrade the charge controller.

I will be upgrading my system in the next 6 months when I renovate my house so I’m looking for a solution for now.

Is it possible to put a new charge controller into my inverter that can take all my panels or maybe an external charge controller that can still communicate with my inverter as it currently does.

pwm or mppt ?

Thanks guys.

 

When using a external the MPPT will just charge the battery as it should based on the settings needed for any battery. No interface with the inverter. You can retain the 1200W panels connected to the inverter. 

When using 2x540W panels and your 3kW inverter is a 24V you will need a 40A / 120+V external MPPT. Look at the Epever range. Lithium settings can only be done via a comms cable between Epever and PC. 

Due to the size of the 540W panels it seems that you can only use 4 panels in total. This is where the Voc becomes important to use the better combination the the controllers in use. 

Edited February 25, 20233 yr by Scorp007