[RE-wrenches] Low grid voltage fix

[Joel Davidson]

Wrenches,

It's Christmas time again in Southern California Edison (SCE) territory 
which means low insolation and high regional electric consumption. Every 
night SCE voltage drops to around 105 VAC or lower. Our grid-tie SW4048 
inverter sees SCE's low voltage as a brownout and switches to autonomous 
mode which is normal. However, we have only 4 kWh of battery storage so the 
combination of nightly brownouts and a series of cloudy days eventually 
depletes our battery bank causing the inverter to do a low-voltage shut down 
which is normal. Power goes off in our home and we have to switch over to 
SCE power, reset the inverter, and wait until the battery bank is recharged. 
How do we set the SW4048 to accept as low as 100 VAC from the grid before 
switching to autonomous mode?

Joel Davidson