SMA SUNNY ISLAND 8.0H - Status of the Stand-Alone Grid

SMA Solar Technology AG 4 Operating the Off-Grid Inverter with Sunny Remote Control
Operating Manual SI80H-BE-BEN120810 23
Status of the Stand-Alone Grid
Figure9: Status of the stand-alone grid (example)
D Internal transfer relay The external energy source is disconnected from
the stand-alone grid.
The stand-alone grid is connected and
synchronised to the external energy source.
E Direction of energy
flow
Loads are being supplied.
AC sources in the stand-alone grid are feeding in
more energy than is being consumed by the
stand-alone grid.
F Loads in the stand-
alone grid
Icon for loads in the stand-alone grid
G Multi-function relay 1* Multi-function relay 1 is open.
Terminals C and NC are connected.
Multi-function relay 1 is closed.
Terminals C and NO are connected.
H Multi-function relay 2* Multi-function relay 2 is open.
Terminals C and NC are connected.
Multi-function relay 2 is closed.
Terminals C and NO are connected.
* If the multi-function relay controls a load-shedding contactor, the contactor will shed the loads when the relay opens.
Position Designation Explanation
A Output power Output power of the off-grid inverter in kW
B Loads in the stand-
alone grid
Icon for loads in the stand-alone grid
Position Designation Icon Explanation