- Aug 3, 2020
400bird said:I still haven't heard anything special about the GTIL2
What makes the GTIL2 special is that the charge controller supplies the same volts from the pv as what the battery volts are. This enables the GTIL2 to use the pv power from charge controller first and if pv power isnt enough to fully supply the homes loads then battery power is added to the loads with the pv power. Thats the same way offgrid inverters work with a charge controller. So not anything really special yet. Heres where it becomes special. The GTIL2 is a grid tie inverter that does the same thing that an offgrid inverter does. This is starting to get special because most grid tie inverters cannot use batteries like an offgrid inverter would. Most grid tie inverters are string inverters and could possibly use a battery bank as backup power only.
Ofcourse the grid tie inverter cannot operate when grid power isnt working like an offgrid inverter would, But most peoples grids are working all of the time.
Heres what makes the GTIL2 really special. besides using pv and battery like an offgrid inverter does. GTIL2 can also use the grids power to supply loads at the same time it is using pv and battery (an offgrid inverter cannot do that) , but the GTIL2 only uses the grids power if the it cannot produce enough to supply the load because the inverter is smaller than the amount of the loads, or uses grid power because battery dropped to the adjustable battery cutoff voltage. The gtil2 does not shutdown then reboot after a certain time or switch to a different mode or need a transfer switch etc. If pv power isnt enough then battery is added to help and if thats still not enough the grid just takes care of the rest. And on top of all that all of the surges are supplied by the grid as opposed to an offgrid inverter that needs to be able to handle those surges which shortens and offgrid inverters life compared to an inverter that doesnt have to deal with surges.
Im starting to think (more I look at it) those outbacks will only allow battery to be used instead of pv and then pv (if its available at that time) just charges the battery when the inverter is using the battery. Im going to keep looking into it. The GTIL2 supplies pv first to a load even when the battery is being used.