SMA America, LLC 2 Sunny Island 4548-US/6048-US
Technical description SI4548_6048-US-TB_en-13 17
The Sunny Island monitors the set voltage and frequency limits on the grid and generator. If these limits
are not observed, it disconnects from the external source without interruption and changes to
stand-alone grid operation.
The Sunny Island also has an integrated anti-islanding feature which stops the production of electricity
when the grid goes down. If this process is tripped, the system also completely changes to stand-alone
mode without interruption.
The Sunny Island can be integrated into different system constellations. The following graphics show
the devices of a Sunny Island system and the different wiring options (single-phase/single-phase
parallel, split-phase, double-split-phase and three-phase).
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