I am building a solar system without battery for my home in Thailand based on the attached design. I am using the Growatt spf 5000 es along with 10x450w Trina panels in a 5S2P configuration for this project. I have tested the inverter in relation to GN bonding and found that it does not bond when using AC input. I will revisit this issue if and when I choose to add a battery pack.
The design eliminates the need for a distribution sub/critical load panel by using the main panel. It redirects one phase of the utility-provided three phase supply to the Inverter's AC Input and connects the inverter's AC Output back to the main panel (sort of replacing the redirected phase with itself + some added power provided by the solar panels). This saves me time, money and allows me increase or decrease the load on the inverter within minutes if not seconds.
Potential downsides are inability to supply 3P power for a single load and possibility of complications when adding battery power (maybe not?)
My purpose for starting this thread is to share and receive some feedback on my approach and implementation. All comments welcome.
Thanks
Sam
The design eliminates the need for a distribution sub/critical load panel by using the main panel. It redirects one phase of the utility-provided three phase supply to the Inverter's AC Input and connects the inverter's AC Output back to the main panel (sort of replacing the redirected phase with itself + some added power provided by the solar panels). This saves me time, money and allows me increase or decrease the load on the inverter within minutes if not seconds.
Potential downsides are inability to supply 3P power for a single load and possibility of complications when adding battery power (maybe not?)
My purpose for starting this thread is to share and receive some feedback on my approach and implementation. All comments welcome.
Thanks
Sam