In datasheet v2.0 of the kh-10 inverter there is a line '[1] The maximum generating power of each pv string is limited to 3300 watts.' at the very bottom
https://www.fox-ess.com/wp-content/uplo ... 241127.pdf
Now in v2.3 that line is gone.
https://www.fox-ess.com/download/upfile ... 250912.pdf
so what is the max power per array for kh-10? sales told me it's max 12 x 440w Jinko panels in one array or it will go over the max input voltage. The Jinko panel has 30V Vmp and 330w Pmax. So 12 panels in one array will give 4000w and 360v. The datasheet does mention Norminal DC Operating Voltage = 360v. I figure this is how the sales got the number of 12 panels? (360 Norminal inverter /30 Vmp panel). But how about power per string?
The 3300 watt power limit has been removed on the KH10, the absolute max per MPPT is 8000 watts but you should aim for around 5000 watts per string which the 12 panels would give you.
The Jinko has a Vmpp of 32.99 so for 12 panels is 396V which is again about right (the absolute max is 500V but 300-440V is the sweet spot for the inverters MPPT).
The Jinko has a Vmpp of 32.99 so for 12 panels is 396V which is again about right (the absolute max is 500V but 300-440V is the sweet spot for the inverters MPPT).