SMA SUNNY ISLAND 3.0M Installation Manual page 76

8 Commissioning
Figure 22: State of charge ranges of the battery according to the time of year (example)
Range Explanation of the range and parameters
SlfCsmp Range for increased self-consumption
The SlfCsmp range applies to the shortest day of the
year with seasonal adjustment (see Section 8.2.4.1,
page 75). When seasonal adjustment is deactivated,
only the SlfCsmp range is used and the BatRes range
increased accordingly.
Minimum width of the self-consumption range /
262.05 MinSlfCsmpSOC
PVRes Range for maintaining the state of charge of the battery
The range size is constant year-round.
Width of the range for the maintenance of the
battery state of charge / 262.04 PVResSOC
BatRes Range for protection against deep discharge
This range can only be reached when the utility grid
fails.
The BatRes range applies to the longest day of the
year with seasonal adjustment (see Section 8.2.4.1,
page 75). If seasonal adjustment is deactivated, the
BatRes range is increased accordingly.
Minimum width of the deep-discharge protection
range / 262.02 BatResSOC
76 SI30M-44M-60H-80H-IA-en-32
SMA Solar Technology AG
Behavior of the Sunny Island inverter
The Sunny Island uses the battery for increased
self-consumption.
Excess PV energy is used for conserving the
battery charge. If no excess PV energy is
available, the Sunny Island switches to energy
saving mode. When the state of charge reaches
the BatRes range limit, the Sunny Island charges
the battery up to half of the PVRes range from the
utility grid. To do so, the Sunny Island charges the
battery with maximum efficiency at 25% of the
nominal power of the Sunny Island inverter.
If a utility grid is available, the Sunny Island
charges the battery using nominal power from the
utility grid.
Installation manual