Hi. I installed my own small grid tied system myself on the garage roof 15 years ago. I want to add a small battery backup to utilize the solar panel power generated when grid down in order to run a few critical circuits when the power is out.
Current array is twelve 220watt 24v panels in series sending 330ish volts to a dsquare disconnet, then to the Sunny Boy GTI to a 100a subpanel in the garage to our main 200a house panel.
I think I want to add a DC transfer switch just after the dsquare mechanical DC disconnect so that when power goes out I can redirect the 330v array to an all-in-one inverter/small battery bank. Don't know if I'd go auto or manual transfer switch.
What products are available to make this all happen? What's available on the market for a transfer switch that can handle 400volts DC?
I also have ten 100w 12v panels that have not been utilized in a number of years and I think I want to mount them to keep the battery bank topped off and run the few things I run in the garage where all this will be mounted.
I was thinking a EG4 3000EHV-48 since it can handle 500v and 1 or 2 of the EG4 Lifepower4 48v 100ah server rack batteries to keep it budget friendly, but not sure yet.
All input welcome and appreciated.
Chris
Current array is twelve 220watt 24v panels in series sending 330ish volts to a dsquare disconnet, then to the Sunny Boy GTI to a 100a subpanel in the garage to our main 200a house panel.
I think I want to add a DC transfer switch just after the dsquare mechanical DC disconnect so that when power goes out I can redirect the 330v array to an all-in-one inverter/small battery bank. Don't know if I'd go auto or manual transfer switch.
What products are available to make this all happen? What's available on the market for a transfer switch that can handle 400volts DC?
I also have ten 100w 12v panels that have not been utilized in a number of years and I think I want to mount them to keep the battery bank topped off and run the few things I run in the garage where all this will be mounted.
I was thinking a EG4 3000EHV-48 since it can handle 500v and 1 or 2 of the EG4 Lifepower4 48v 100ah server rack batteries to keep it budget friendly, but not sure yet.
All input welcome and appreciated.
Chris