Sell; Island Mode - Generac Power Systems XVT076A03 Installation And Owner's Manual

System Operation

Sell

Sell mode sets the system to export all available DC
power to the grid up to the rated grid-tied output maxi-
mum. Available power from solar is exported first, fol-
lowed by stored energy from the battery. When exporting
power, connected batteries discharge to the grid until
their state of charge reaches the MinSocRsrv setpoint.
Once a battery is depleted to this point, it will not charge
again until either of the following are true:
•
Solar production exceeds the inverter rated grid-
tied output power maximum.
•
The inverter system mode is changed to a system
mode prioritizing battery backup.
See the Generac PWRcell Battery Installation Manual for
more information.
42

Island Mode

In the event of a grid outage, the PWRcell Inverter enters
Island Mode. While in Island Mode, the inverter discon-
nects from the utility grid and powers the building from
the REbus nanogrid. In a typical solar-plus-storage con-
figuration, this means all REbus-connected batteries will
work together with the PV links to supply power to
REbus. The inverter will pull power from REbus to pro-
vide AC power to protected loads.
In Island Mode, the inverter will display "Islanding" on the
home screen and a status of "islanded" on the inverter
device page. Herein, use of islanding and islanded refer
to Island Mode.
Figure 7-9. Island Mode
NOTE: To enter Island Mode, the inverter setpoint,
"EnaIslanding", must be set to 'on' (default value) and the
system mode can not be set to Grid Tie.
NOTE: If EnaIslanding is set to "off" when an outage
occurs, the inverter will disconnect from the grid and
enter Standby state if DC power is available from REbus
devices. If DC power is not available from REbus
devices, the inverter will power off. Backup loads will not
be powered.
Table 7-3. Island Mode AC Short Circuit
Current Contribution
Peak AC short-circuit current contribution
Peak output fault current duration
Peak output RMS fault current
Max 3-Cycle RMS output fault current
Max fault current duration (Current limit in
overload 32 A rms)
Installation and Owner's Manual for Generac PWRCell Inverter
012484
370 A p-p
300 us
125 A rms
47.7 A rms
6.23 s