I cant look that well into the inverter and i would rather not disassemble it.There were still a few specs missing. Do you know if the transformer inside is toroidal?
I have connected the grid to the grid-input of the inverter and the whole house to the load-output of the inverter.I also couldn't find idle power usage, or whether it can share loads with the grid if the solar input is too low. As opposed to just switching, that is.
Up to 45A can flow through the inverter, of which itself can provide 21,7A (5kW).
As long as the grid is there, it runs in grid-tied mode. Acting like you want it to. There are many possible ways.
I opted for the inverter to prioritize the loads in our house, if something is left charge the battery and try not to feed into the grid.
If i turn off the breaker for the grid input, the inverter will switch quickly into Off-Grid mode, providing power just by itself. The lights flicker but my Pc's dont turn off. If i turn on the grid breaker, the inverter will connect back to the grid after roughly a minute, resulting in the same short power outage of light flickering but Pc's staying on. Pretty much any hybrid, off grid able, inverter is like that.
The self-consumption is 50W from the grid, if the battery and solar are not sufficient anymore and the inverter is turned on. But even on rainy and dark days with 10kWp we make a little more power on average than it consumes.
Overall, its not the most efficient inverter, like the expensive real premium brands like Victron, SMA and probably Schneider. But it gets the job done well enough for me. If you have a lot of shadows or live where there are many many dark and rainy days, you might be better off with Victron in the long run.
I paid only 1100€ shipped (and maybe taxed?) for my 5kW 1 Phase / Split Phase inverter. 2600€ are the 3 phase models.
I went through a very sketchy payment process, but got exactly what i ordered for at that time the cheapest price. (E-Mail contact and payment directly to a chinese bank) I can send you the E-Mail, but i'm not sure if you wanna go through that.
Alternatively, you can buy those inverters from Alibaba. Which is the Aliexpress for big quantity items / expensive items.