SUNNY ISLAND 5048 - Technical Description - Wind & Sun Ltd.
SUNNY ISLAND 5048 - Technical Description - Wind & Sun Ltd.
SUNNY ISLAND 5048 - Technical Description - Wind & Sun Ltd.
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SMA Solar Technology AG Additional Functions<br />
12.4 Overload and Short-Circuit Behavior<br />
The <strong>Sun</strong>ny Island can be temporarily operated under overload conditions. It can also supply shortcircuit<br />
currents.<br />
In case of overload, the <strong>Sun</strong>ny Island supplies an output of 6 500 W for 30 minutes and can supply<br />
7 200 W for 5 minutes. The device can even supply 8 400 W of output power for one minute.<br />
In the event of a short circuit, the <strong>Sun</strong>ny Island provides a maximum current of 100 A (for 100 ms).<br />
This is sufficient to trip commercial 16 A B-type circuit breakers.<br />
12.5 Device Faults and Autostart<br />
If a critical fault occurs, the <strong>Sun</strong>ny Island automatically shuts down and displays the reason on the<br />
display. If the autostart function is activated ("250.01 AutoStr" parameter), the <strong>Sun</strong>ny Island can<br />
confirm the failure automatically and restart on its own. If the failure persists, the <strong>Sun</strong>ny Island cannot<br />
be started.<br />
Automatic start meter<br />
If the autostart meter has counted down to 0, the <strong>Sun</strong>ny Island waits for 10 minutes before<br />
attempting to restart automatically.<br />
Displaying messages<br />
Messages can be displayed at any time while the device is in operation and they have<br />
priority over the "Home Screen" display.<br />
12.6 Automatic Frequency Control (AFC)<br />
Clocks that depend on the stability of the grid frequency for their accuracy become increasingly<br />
inaccurate when there are constant frequency deviations. Frequency fluctuations, i.e., deviations from<br />
the nominal frequency occur, for example, in stand-alone grid systems that operate with a diesel<br />
generator.<br />
The "Automatic Frequency Control (AFC)" function of the <strong>Sun</strong>ny Island allows the use of grid-coupled<br />
clocks in these types of stand-alone grid systems. This function is activated using the<br />
"250.11 AfraEna" parameter.<br />
The time deviation is compensated on average.<br />
Quartz-controlled clock in the <strong>Sun</strong>ny Island<br />
The internal clock in the <strong>Sun</strong>ny Island is quartz-controlled and thus operates correctly<br />
(within the tolerance limits). The adjustment refers to externally connected clocks that<br />
depend on the grid frequency.<br />
<strong>Technical</strong> <strong>Description</strong> SI<strong>5048</strong>-TB-TEN110340 95