Help ,

i have 3 x RCT 11k 48v single phase inverters connected in parall to get a 3phase output and connected to 3 x Am10 Hubbel batteries all paralled but they will not charge the batteries.

 

If i set the inverters to single phase then each one will charge but on setting the inverters to 3phase 1,3phase 2 and 3phase 3 respectively they will not charge.

 

Anyone got some knowledge please.

 

 

Thanks,

 

* Are you charging with utility or solar?

* Are the three inverters connected to three different phases?

* Have you tried rotating the phases (swap AC-in to any pair of inverters).

* Do the AC-in icons show up on the LC Displays?

Charging settings are per inverter (not master dictates all). So make sure that appropriate charging settings are in each inverter, though presumably each has been seen charging individually, so that should be OK.

There is a small chance it's firmware related.

* What main (U1) firmware version are they running?

I presume that you don't have current sharing cables connected; that's only for actual parallel operation (more than one inverter on the same phase).