SMA SI 3.0-11 Installation - Manual (Page 71)

SMA Solar Technology AG 8 Commissioning
Installation Manual SI30M-44M-60H-80H-IA-en-30 71
The following ranges result from the parameter default values:
Range Parameter and explanation of the range Behavior of the Sunny Island inverter
SlfCsmp 262.05 MinSlfCsmpSOC
Range for increased self-consumption
The value of 262.05 MinSlfCsmpSOC applies to
the shortest day of the year with seasonal adjustment
(see Section 8.2.4.1, page 69). If seasonal
adjustment is deactivated, only the value of
parameter 262.05 MinSlfCsmpSOC is used and
the BatRes range is increased accordingly.
The Sunny Island uses the battery for increased
self-consumption.
PVRes 262.04 PVResSOC
Range for maintaining the state of charge of the
battery
The range size is consistent year-round.
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.
BatRes 262.02 BatResSOC
Range for protection against deep discharge
This range can only be reached when the utility grid
fails. The value of parameter 262.02 BatResSOC
applies to the longest day of the year with seasonal
adjustment (see Section 8.2.4.1, page 69). If
seasonal adjustment is deactivated, the BatRes
range is increased accordingly.
If a utility grid is available, the Sunny Island charges
the battery using nominal power from the utility grid.
ProtRes 262.02 ProtResSOC
Range for protection during deep discharge
This range can only be reached when the utility grid
fails.
When this range is reached, the Sunny Island
switches off in order to protect the battery. When the
utility grid is available again, the system must be
charged manually ("Charging the Battery after Auto
Power Off", see Sunny Island operating manual).
Range Lead-acid battery Lithium-ion battery
Shortest day*
* December 21 (northern hemisphere) or June 21 (southern hemisphere)
Longest day**
** June 21 (northern hemisphere) or December 21 (southern hemisphere)
Shortest day* Longest day**
MinSlfCsmp 65% to 100% 45% to 100% 30% to 100% 10% to 100%
PVRes 60% to 65% 40% to 45% 25% to 30% 5% to 10%
BatRes 10% to 60% 10% to 40% 3% to 25% 3% to 5%
ProtRes 0% to 10% 0% to 10% 0% to 3% 0% to 3%