SMA SUNNY ISLAND 4.4M Operating Manual page 78

7 Commissioning
• Increased self-consumption range (SlfCsmp)
You determine the percentage of the battery capacity that is to be used for increased self-consumption on the
shortest day of the year.
• Range for battery-backup function (BURes)
You specify the percentage of the battery capacity that is to be used for the battery-backup function on the longest
day.
The longer the days become, the more the SlfCsmp range automatically increases and the BURes range decreases.
The range for increased self-consumption reaches its maximum on the longest day. This results in the seasonal
progression of the ranges.
SOC
100 %
0 %
Winter
Figure 18: Ranges of the battery state of charge as a function of the season for the northern hemisphere (example)
Range Explanation of the range and parameters
A Self-consumption range (SlfCsmp)
The SlfCsmp range applies to the shortest day of the
year with seasonal adjustment (see Section 7.6.4.1,
page 74). When seasonal adjustment is deactivated,
only the SlfCsmp range is used and the BURes range in-
creased accordingly.
Battery > Ranges of application > Minimum width
of backup power range
11)
This range can be adjusted for all battery types.
78 SI44M-80H-13-BE-en-15
A
B
C
D
E
Summer
Behavior of the Sunny Island inverter
11)
The Sunny Island uses the battery for in-
creased self-consumption.
SMA Solar Technology AG
t
Winter
Operating manual