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I am interested in building a system that has both three SE10000-H-US inverters and 27KW Generac standby generator with Generac automatic transfer switch as described in this document:
https://knowledge-center.solaredge.com/sites/kc/files/se-inverter-support-of-voltage-sources.pdf
From my reading of this document it sounds like once the grid goes down, and the transfer switch switches, it closes the dry contacts to the inverters and now they are in limited production mode. (So as not to back feed the generator thinking it is the grid I am guessing)
The goal here is in a grid down situation, to have the generator running and the solar assisting it, but not back feeding it. (Conserving generator fuel in a long-term grid down situation)
The question I have is how does the inverter know how much power to generate to just fulfill what the loads require without overdoing it?
Obviously a mistake here could be a very costly error..
Any reason I wouldn't we able to test this limited production mode by disconnecting the inverters, place an exact known and measured load on the grid. Then connect the inverters to the grid, shorting the V and L1 terminals then measuring the output of the inverters, and if it matches exactly what the known load is then inverters are producing only what the load requires and not back feeding to the grid and therefore the generator when it is connected?
Any thoughts are greatly appreciated!
https://knowledge-center.solaredge.com/sites/kc/files/se-inverter-support-of-voltage-sources.pdf
From my reading of this document it sounds like once the grid goes down, and the transfer switch switches, it closes the dry contacts to the inverters and now they are in limited production mode. (So as not to back feed the generator thinking it is the grid I am guessing)
The goal here is in a grid down situation, to have the generator running and the solar assisting it, but not back feeding it. (Conserving generator fuel in a long-term grid down situation)
The question I have is how does the inverter know how much power to generate to just fulfill what the loads require without overdoing it?
Obviously a mistake here could be a very costly error..
Any reason I wouldn't we able to test this limited production mode by disconnecting the inverters, place an exact known and measured load on the grid. Then connect the inverters to the grid, shorting the V and L1 terminals then measuring the output of the inverters, and if it matches exactly what the known load is then inverters are producing only what the load requires and not back feeding to the grid and therefore the generator when it is connected?
Any thoughts are greatly appreciated!
