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
