Technical Support

Good day,

I want to ask if someone can explain the various parameters that can be viewed on the Inverter, Sunsynk App and Web Portal? Also, if you can have a look at the problem I mention after the table and have some comments that would be appreciated.

A problem I had:

I had an issue where the "Local Switch" on the AC Protection box was damaged - the wires going into it must have gotten really hot at a point because the insolation around it was a bit melted and there was a brown colour like when something burnt a bit because of electricity (sorry the only way for me to explain it). The switch kept tripping and that is when we saw the fault. The switch had a rating of 63A. The installer said it must have pulled too much current. I'm thinking it must be something else as the history shows a max current of around 31A when I look at I-ac-1 not sure if it is the right place to look and if something else should be combined with it?

The Inverter info shows the following:

Charge Mode

AC Input Rated Current - 35Aa.c

Max AC Input Current - 40Aa.c

Max AC Input Power - 8800W

PV Input Current - 22Ad.c + 22Ad.c

Max PV Input Power - 10400W

Max PV ISC - 25Ad.c + 25Ad.c

Utility-Interactive

AC Output Rated Current - 35Aa.c

Max AC Output Current - 40Aa.c

Max AC Output Power - 8800W

Max AC ISC - 134Aa.c

Stand Alone

AC Output Rated Current - 35Aa.c

AC Rated Output Power - 8800W

Max Continuous AC Passthrough - 90Aa.c

Peak Output Power - 16000W 10 seconds

At 230V a Load of 8800W works out to around 38A and a Load of 8000W works out to around 35A - that is if I understand it correctly. I think AC conversion is different from DC conversion?

So I have some Questions:

1) Does that mean that the Inverter can take a max current of 40A from the Grid, but preferably not more than 35A?

2) Does that mean the Inverter can take a max input power of 8800W from the Grid?

3) When both Battery and Grid supplies power for the Load - Is that power/current added together when considering the 35A/8800W input levels?

4) When PV is providing power to the Load and charging the battery - Is that power/current added together when considering the 35A/8800W output levels?

5) The Battery takes DC so I assume the Inverter doesn't do anything with the PV supply that enters and goes towards charging the Battery?

6) Am I correct that DC produces a lower current (A)?

7) Why would the Inverter take a lower current (A) from DC than from AC? Is it because it needs to convert it to AC and therefor must limit it for the rated output current?

8) How/Where can I see (on the Inverter, App or Web portal) what the current Amps is that the Inverter is putting out?

9) I have an array of 12 x 600W panels which equates to 7200W - In the week I saw the PV generating a whopping 7800W power, that is 600W over the rated power. I was thinking of adding another 4-6 panels, but just on rating 6 would be too much considering the 10400W limit (it would be potentially 10800W) and just in case I get a similar result as with the current panels would not want to exceed the max and potentially damage the Inverter. So I suppose 4 (to balance between the 2 MPPT strings) will be better taking it to 9600W (which hopefully won't burst above 10400)?

Apologies for the many questions in one go, but my current was flowing 😁