SMA Solar Technology AG 10 External Energy Sources in the Off-Grid System
Installation Manual SI80H-60H-OffGrid-IA-en-11 135
The stand-alone grid is
synchronised.
The off-grid inverter connects the stand-alone
grid to the generator.
Closed, the
stand-alone grid is
connected to the
generator.
The stand-alone grid is
connected to the generator.
The generator is feeding current into the stand-
alone grid.
The generator management starts the minimum
run time.
The minimum run time is
running.
Even if the generator management no longer
requests the generator, the stand-alone grid
remains connected to the generator.
The minimum run time ends. If the generator management continues to
request the generator, the stand-alone grid
remains connected to the generator.
The generator
management no longer
requests the generator.
The off-grid inverter supplies the stand-alone grid
and carries out load-free disconnection of the
generator from the stand-alone grid.
Open, the
stand-alone grid is
not connected to
the generator.
The generator management starts the shut-off
delay.
The shut-off delay time is
running.
During the shut-off delay time, the generator
management cannot request the generator
again and the off-grid inverter cannot connect
the stand-alone grid to the generator again.
The shut-off delay time
ends.
The off-grid inverter stops the generator.
The generator management starts the minimum
stop time.
The minimum stop time is
running.
The off-grid inverter cannot start the generator.
Manual starting on the off-grid inverter is not
possible either.
The generator management cannot request the
generator.
The minimum stop time
ends.
The generator management can request the
generator.
The generator can be started on the off-grid
inverter.
Event or state Result Internal transfer
relay
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