4 Product Overview
SMA Solar Technology AG
Operating manual
SBSxx-10-BE-en-11
21
• Setpoint specifications for system control
• Controlling the battery
Grid management services
The product is equipped with service functions for grid management.
Depending on the requirements of the grid operator, you can activate and configure the functions
(e.g. active power limitation) via operating parameters.
Secure power supply operation
In case of a grid failure, the secure power supply operation supplies the loads with energy from the
battery. You can connect a standard outlet (230 V) and a standard switch to the inverter. You can
connect a load with a maximum of 16 A and 230/240 V to the emergency power outlet. The load
is supplied with energy from the battery during grid failure. The switch is used to enable and
disable secure power supply operation.
The secure power supply operation is not automatically enabled in the event of a grid failure,
neither is it automatically disabled once the utility grid is available again. If the utility grid fails, the
load supply must be enabled manually by activating the switch. The inverter automatically regulates
the energy supply of the outlet after activating the switch. When the utility grid is available again
and the load can be supplied by this again, the secure power supply operation must be disabled
manually by switching the switch off.
During active secure power supply operation, the inverter is disconnected from the building's main
electrical system and does not therefore feed into the utility grid. During secure power supply
operation, the load can only be supplied with energy as long as there is stored energy available in
the battery. If there is insufficient energy available from the battery, the secure power supply
operation remains active, even if the utility grid is available again. Switching over to supplying the
load from the utility grid is not carried out automatically.
Secure power supply operation in Flexible Storage Systems with backup
power supply not possible
If the inverter is used in a battery-backup system and connected with an automatic transfer
switch, the secure power supply operation is not available.
Do not connect any loads that require an uninterrupted energy supply
The secure power supply operation and the battery-backup operation may not be used for
loads that require a uninterrupted energy supply. The energy that is available during the
secure power supply operation or battery-backup operation depends on the battery capacity
available and the state of charge of the battery (SOC).
• Do not connect loads if they are dependent on an uninterrupted energy supply for
reliable operation.
