Hello,
I recently installed the two MIdnite solar SPD's on my 6000xp system, one for each MPPT (one for each string). I shut down the system, installed them and turned everything back on in the order recommended by the manual but the inverter kept making a clicking noise and the solar wouldn't activate in the inverter. The SPD's are the 300 volt DC models and my strings are well below the threshold. Then the inverter would show error code 20 "PV isolation low". I restarted the inverter multiple times with the same result. So I decided to disable the PV isolation setting and everything immediately cleared and started working as it should. The issue is- why would the PV isolation (GFCI capabilities, as I understand it) have to be turned off for the PV circuit to function with the SPD's? Is it possible that the SPD's are being seen as a ground fault?
As an electrician, I really liked the idea of the PV circuits having ground fault protection and want it enabled.
I recently installed the two MIdnite solar SPD's on my 6000xp system, one for each MPPT (one for each string). I shut down the system, installed them and turned everything back on in the order recommended by the manual but the inverter kept making a clicking noise and the solar wouldn't activate in the inverter. The SPD's are the 300 volt DC models and my strings are well below the threshold. Then the inverter would show error code 20 "PV isolation low". I restarted the inverter multiple times with the same result. So I decided to disable the PV isolation setting and everything immediately cleared and started working as it should. The issue is- why would the PV isolation (GFCI capabilities, as I understand it) have to be turned off for the PV circuit to function with the SPD's? Is it possible that the SPD's are being seen as a ground fault?
As an electrician, I really liked the idea of the PV circuits having ground fault protection and want it enabled.