6 Interfaces and Functions
SMA Solar Technology AG
6.9
Secure Power Supply Operation
In case of a grid failure, the secure power supply operation supplies the loads with energy from the
battery and the PV system. You can connect a standard socket (230 V) and a standard switch to
the inverter. You can connect a load with a maximum of 16 A and 230 V to the secure power
supply socket. The load is supplied with energy from the battery and PV system 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 must be connected to the socket for secure power supply operation. The supply to the load
must be activated manually by switching on the switch to secure power supply operation. The
inverter automatically regulates the energy supply of the socket after activating the secure power
supply operation. When the utility grid is available again and the loads can be supplied from it, the
loads must be connected to the previous supply and the secure power supply operation must be
deactivated manually by switching off the switch.
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. The loads can only be supplied in
secure power supply operation as long as energy can still be provided by the PV modules and/or
the battery. If there is insufficient energy available, the secure power supply operation remains
active, even if the utility grid is available again. Switching over to supplying the loads from the utility
grid is not carried out automatically.
6.10 SMA ShadeFix
The inverter is equipped with the shade management system SMA ShadeFix. SMA ShadeFix uses
an intelligent MPP tracking system to determine the operating point with the highest output during
shading conditions. With SMA ShadeFix, inverters use the best possible energy supply from the PV
modules at all times to increase yields in shaded systems.
The time interval of SMA ShadeFix is usually 6 minutes. This means that the inverter determines the
optimum operating point every 6 minutes. Depending on the PV system or shading situation, it may
be useful to adjust the time interval.
6.11 SMA Smart Connected
SMA Smart Connected is the free monitoring of the inverter via the SMA Sunny Portal. Thanks to
SMA Smart Connected, the operator and qualified person will be informed automatically and
proactively about inverter events that occur.
SMA Smart Connected is activated during registration in Sunny Portal. In order to use
SMA Smart Connected, it is necessary that the inverter is permanently connected to Sunny Portal
and the data of the operator and qualified person is stored in Sunny Portal and up-to-date.
6.12 SMA Speedwire
The inverter is equipped with SMA Speedwire as standard. SMA Speedwire is a type of
communication based on the Ethernet standard. SMA Speedwire is designed for a data transfer
rate of 100 Mbps and enables optimum communication between Speedwire devices within
systems.
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HSS-SecurePowerSupply-SH-en-10
System Manual
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