I currently have 2 MPP LV5048 s in parallel. I have a 5 ton 2 stage scroll compressor HVAC unit that I only use in stage 1 which is about 3 1/2 ton equivalent. I know the single MPP wont start it so I obtained 2 more to use in parallel . I have only connected one more at this point . I read inrush for HVAC at close to 100 amps so I ordered and installed a hyper engineering soft start kit and the inrush dropped to 24 amps and it runs in cooling mode on about 11.3 amps in stage 1. I then connected the HVAC unit to it and it and the 2 parallel units do start it and run it.
The problem is it isnt running as smoothly as on grid power and when its running the lcd readouts on the LV5048 s show continually changing outputs both watts amps and battery voltages etc. The AC out wires form the individual units also shoe much higher current than the 11.3 amps it runs on from grid power. Checking main battery cables its is drawing more than expected amps to generate the 11.3 amps at 240v .
This makes me think the hyper engineering soft start is either trying to change the phase angle continuously or maybe creating some radio wave type interference that is affecting the LV5048 s. Either way I am not powering the HVAC with it till I get something figured out. If it was just during startup I would think its just "dirty" power due to THD s at near the inverters limits etc but it continues while running too. I also thought if that had something to do with it I would try paralleling the third unit and see if higher potential amps would help. Maybe somehow its using most of the power from just 1 LV5048 and adding some from 2nd causing master to be closer to max? Any settings to adjust other than just paralleling? I currently have 60 Kwhr of Li Ion batteries connected also as well as 12,300 PV watts connected. It makes no difference whether day or night either.
The problem is it isnt running as smoothly as on grid power and when its running the lcd readouts on the LV5048 s show continually changing outputs both watts amps and battery voltages etc. The AC out wires form the individual units also shoe much higher current than the 11.3 amps it runs on from grid power. Checking main battery cables its is drawing more than expected amps to generate the 11.3 amps at 240v .
This makes me think the hyper engineering soft start is either trying to change the phase angle continuously or maybe creating some radio wave type interference that is affecting the LV5048 s. Either way I am not powering the HVAC with it till I get something figured out. If it was just during startup I would think its just "dirty" power due to THD s at near the inverters limits etc but it continues while running too. I also thought if that had something to do with it I would try paralleling the third unit and see if higher potential amps would help. Maybe somehow its using most of the power from just 1 LV5048 and adding some from 2nd causing master to be closer to max? Any settings to adjust other than just paralleling? I currently have 60 Kwhr of Li Ion batteries connected also as well as 12,300 PV watts connected. It makes no difference whether day or night either.