AC Power outages when charging the batterys

DIY
, , , ,
1

Good morning,

I have three Phase Installation with the following devices:
1 Fronius Invertir Symo Advanced 15kw
3 Victron MultiPlus-ll 48/5000/70-50 230V
2 SmartSolar Charger MPPT 150/35
2 BYD Lvs Batteries 16kw x 2

The Problem is when the batteries are charging with the Multiplus inverters I have a lot of short power cuts (1-2 seconds) When I put off the Fronius Inverter and charge the batteries only with the MPPT loaders I have no Problems. The Fronius inverter was checked remotely by Fronius and has no problems.

Does anyone have any idea what it can be?

Thanks!!

2

You have the tag off grid. Are you using it offgrid?
Does the system frequency shift if it is offgrid.

What assistant do you have for controlling the fronius?
Have all the correct settings been made on the fronius. Does it have proper communication with the system?

Are the byds set for offgrid use and the inverters programmed accordingly?
Are the short power cuts happening at a particular state of charge?

3

Hi,

Yes, Its all configurated off Grid. And the frequency works from 49.9 to 53.1hz. We dont have any message when this happens and the problem is when battery is charging between 40 and 100%. I dont know what Assistant I have. All the Installation was remotely checked by Fronius and Victron with the local dealer but they did not gound nothing wrong.

4

So possibly a something only a person at the i etall may pick up.
Is there heat build up in the installation?

5

No, the normal temperatura un the room is 20-25 celcius degrees.
The only thing I see that is Not correct in the Installation is the DC wire length. But I dont know if it can be the Problem.

IMG_9266.jpeg
IMG_9266.jpeg2016×1512 839 KB

6

If they aren’t reading the same voltage at their terminals it could contribute to some issues.

You would need to verify with a meter.