SMA Solar Technology AG STORAGE PACKAGE - BUSINESS, System Manual, Page: 22 / 30

6 Commissioning SMA Solar Technology AG
System Manual SPBusiness-SH-en-10 22
• In the drop-down list Select Grid Code select the entry Germany_MV .
• In the drop-down list Confirm Grid Code select the entry Germany_MV .
13. Select [ Next ]. A summary of your settings is displayed. The main configuration is complete
and the values are transmitted to the battery inverter.
6.7.2 Capturing the Janitza UMG 604-PRO
1. Select the menu Setup > Limited Export .
2. Enter all the data of the Janitza UMG 604-PRO. This is necessary so that the
SMA Inverter Manager can control the storage system according to the data of the power
analyzer.
3. Save all settings and close the LCS-Tool.
6.7.3 Setting the Peak Load Shaving Function (optional)
Input values for Peak Load Shaving
The value Consumption Limit specifies the maximum power that may be obtained from the
utility grid. If this power is exceeded, the storage system discharges to cut the peak load. The
value
Feed in Limit specifies the power from which the storage system recharges. This value
depends on the peak loads to be expected and must be adapted to the application during
planning and commissioning.
The input value for
Consumption Limit is interpreted by the SMA Inverter Manager as a
positive value and the one for Feed-in Limit as a negative value.
If the SMA Inverter Manager, for example, has to limit the grid reference power to +50 kW
and charge the battery below a grid reference power of +10 kW, the value
50 must be
entered for Consumption Limit and the value -10 for Feed-in Limit .
In order for the peak load shaving to work, the following conditions must be observed when
designing the values:
• The peak load to be cut dP must not be greater than the output power of the battery
inverter.
• The energy of the peak load D must not be greater than the capacity of the battery.
• The charging energy C must be slightly greater than the discharging energy D .
• In case of significant changes in the load or generation profile, the parameters must be
adjusted accordingly.
FNN Note
In Germany, according to FNN note "Connecting and operating storage units in low voltage
networks" (October 2016), systems eligible under the FIT scheme in accordance with EEG
and KWKG are not allowed to feed energy from storage units into the utility grid. To ensure
this, the input value for
Consumption Limit is not allowed to be negative.