EcoRenovator - View Single Post - Chinese 300w MPPT Grid-Tie inverter

SolarFix · 03-08-11, 10:43 PM

I have to echo other's concerns about the Enphase M190s... as I have a xx panel array of 235W panels. Power production from each Enphase unit maxes out at 199W - so... allowing for 5% inefficiency in the inverter, the array should be producing 9.3kW vs. the 8.3kW that it currently maxes out at.

I've ordered a 300W 24vdc to 240vac, 60Hz inverter to install (in an emergency situation only - with the grid disconnected) to act as reference for the other xx panels. I'm expecting the array will have to be disconnected from all loads for the 5 min required for the Enphase inverters to come online - then, house loads can be added, so long as they are not sufficient to drop the array produced voltage below the specs.... Bound to be a problematic situation...but so is any emergency.

03-08-11, 10:43 PM	#14
SolarFix Be Prepared Join Date: Jan 2011 Location: Idaho Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	I have to echo other's concerns about the Enphase M190s... as I have a xx panel array of 235W panels. Power production from each Enphase unit maxes out at 199W - so... allowing for 5% inefficiency in the inverter, the array should be producing 9.3kW vs. the 8.3kW that it currently maxes out at. I've ordered a 300W 24vdc to 240vac, 60Hz inverter to install (in an emergency situation only - with the grid disconnected) to act as reference for the other xx panels. I'm expecting the array will have to be disconnected from all loads for the 5 min required for the Enphase inverters to come online - then, house loads can be added, so long as they are not sufficient to drop the array produced voltage below the specs.... Bound to be a problematic situation...but so is any emergency.