Emergency Power Mode; Prerequisites For Emergency Power Mode; Transitioning From Feeding Energy Into The Grid To Backup Power Mode; Transitioning From Backup Power Mode To Feeding Energy Into The Grid - Fronius Symo Hybrid 3.0-3-S Operating Instructions Manual

Emergency power mode

Prerequisites for In order to use the hybrid inverter's emergency power function, the following prerequis-
emergency power ites must be fulfilled:
mode -
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If there are additional inverters in the system, these should be installed outside of the
emergency power circuit, but within that for the Fronius Smart Meter, see
mode - Inverter plus battery, additional inverter and emergency power function
page 23.
NOTE! Emergency power mode is not possible with the batteries from the LG Chem
ResuH series.
Transitioning 1.
from feeding
energy into the 2.
grid to backup
power mode 3.
4.
5.
Transitioning 1.
from backup 2.
power mode to 3.
feeding energy
into the grid 4.
5.
6.
7.
Correct cabling of the emergency power system in the electrical installation (see
document "Fronius Energy Package - Examples of emergency power switchover").
The Fronius Smart Meter must be installed at the feed-in point and configured.
Latest firmware on the inverter - if required, perform a firmware update.
The emergency power sticker provided with the inverter must be attached to the
electrical distributor.
Select Alternative (emergency power) setup in the CONFIG menu on the inverter
(see Installation Instructions).
Change the required settings in the emergency power area in the IO mapping menu
(Fronius system monitoring web page → Settings → IO mapping → Emergency
power).
Set the emergency power to "Auto" in the system overview (Fronius system monitor-
ing web page → Settings → System overview → Emergency power operating
mode).
The public grid is monitored by the inverter's internal grid and system protection unit
and by the Fronius Smart Meter connected to it.
The public grid fails or specific grid parameters are dropped below or
exceeded.
The inverter carries out the measures necessary according to the country standard
and then switches off.
The inverter starts backup power mode after a checking period.
All loads in the household that are in the backup power circuit are supplied by the
battery and the PV modules. The remaining loads are not supplied with power and
are safely isolated.
The inverter is operating in backup power mode.
The public grid is functioning correctly again.
The Fronius Smart Meter monitors the grid parameters on the public grid and
passes this information to the inverter.
The stability of the returned public grid is determined by checking the measured val-
ues of the Fronius Smart Meter.
The inverter ends backup power mode.
All circuits are reconnected to the public grid and are supplied by the grid.
The inverter can start feeding energy into the grid again after performing the grid
checks required by the relevant standard.
Operating
on
25