SMA Solar Technology AG Connecting External Sources
Technical Description SI5048-TB-TEN110340 129
3. Connect the positive pole of the BatVtgOut connection to the second contact of the same
auxiliary contact on the transfer switch.
An auxiliary contact is used because the Sunny Island must "know" whether it is connected to the
power distribution grid or whether it must manage a diesel generator.
To enable such a kind of operation, you must set the "231.05 ExtSrc" parameter to "GenGrid" (see
section 8.2”Starting the Quick Configuration Guide (QCG)” (page57)).
Settings performed on the generator and grid
All the settings made for the generator and grid in the submenus also apply to the
"GenGrid" selection.
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