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Thank you for the charts. Good to see your bus voltage is similar to mine. Also the parameters are quite the same, the 57 was 1[A] and most probably that alone led to battery over volt. As for main bus over volt, I won’t fiddle with grid on for now because the inverter works fine otherwise...

I’m not sure about your case but my Growatt spf5000es also outputs some 90VAC on each split phase and I believe it burned.

I have a 10kW Easun split phase that can back feed the extra solar to grid. I need help understanding the back feed, since the inverter has both ac input and output ports. Question is: does it back feed directly via the ac input port? If the grid fails does it know to isolate the input in order...

1. I don’t have any agreement. I don’t run in grid tie mode. Just happen to try it briefly once. I have two uncomissioned inverters with export limiters to address the consumption on the extra panel connected to grid only. The solar setup-excepting for the grid tie inverters feeds a panel that...

the solar array doesn’t get above 400v usually but the inverter dc bus gets above 520, as seen on attached charts. I have to say that while the bus voltage fluctuates the ac output is consistently solid; there is no indication in the output that the dc bus misbehaved. However, looking at the...