Fronius Primo GEN24 3.0, Operating Instructions Manual

Page: 47 / 192

Transitioning
from backup
power mode to
feeding energy
into the grid 1 . The inverter is operating in backup power mode. The contactors K1 and K2 to
the public grid are open.
2 . Public grid available again.
3 . The Fronius Smart Meter monitors the grid parameters on the public grid
and passes this information to the inverter.
4 . The stability of the returned public grid is determined by checking the meas-
ured values of the Fronius Smart Meter.
5 . On the basis of adjustments that have been carried out, the inverter ends
backup power mode and disconnects the outputs.
6 . The inverter deactivates K3. Power is restored to contactors K1, K2, K4 and
K5.
7 . All circuits are reconnected to the public grid and are supplied by the grid.
The inverter does not feed anything into the grid at this time.
8 . The inverter can start feeding energy into the grid again after performing the
grid checks required by the relevant standard.
47
EN