Electrical Connections
Installation Manual for Generac PWRCell Inverter
17
Protected Load
For systems equipped with energy storage, the inverter’s
protected loads terminals provide power during a grid
outage.
NOTE:
The protected loads terminals can only provide
two phases of power in a three-phase system.
See
By default, the grid powers any
protected loads connected to the inverter protected loads
terminals.
The PWRcell Inverter is configured to pass
grid power from AC grid terminals through to the
protected loads terminals. This includes when the
inverter is disabled.
During a grid outage, internal relays
inside the inverter isolate the AC grid connection and the
inverter powers the protected loads only using PV array
and battery power. This transition takes place in a
fraction of a second.
NOTE:
To create a protected loads panel, connect the
circuits that require backup to a subpanel. Connect this
subpanel to the protected loads terminals.
•
The protected loads output can provide on the
order of 8kW of continuous power. See
for exact values.
•
The inverter can surge up to 50A for motor starting
capabilities.
NOTE:
Actual power output for protected loads during a
grid outage will depend on system sizing for batteries and
solar array.
NOTE:
Backup power ratings are separate from the
power ratings for PWRcell inverters while grid connected-
7.6kW and 11.4kW respectively.
Figure 5-5. Single Inverter Backup Installation with Protected Loads Panel
(000648a)
CAUTION
Equipment damage. Never connect protected loads
terminals to other sources of power, including any other
inverter, the utility grid, or a generator. Doing so could
result in equipment or property damage.
(000649a)
CAUTION
Equipment damage. Never connect protected loads
output from inverters in parallel. Doing so could result
in equipment or property damage.
A
PV Array
B
PWRcell Inverter
C
Protected Loads Panel
D
Protected Loads Disconnect
E
AC Main Panel
F
PWRcell Battery
G
Utility
A
F
B
C
D
E
009997
G
