Electrical Connections
22
Installation and Owner’s Manual for Generac PWRCell Inverter
AC Coupled PV
The PWRcell XVT076A03 Inverter unlocks the ability to
couple with an existing AC coupled PV array for reliable
energy storage with a PWRcell Battery.
NOTE:
A PWRcell ATS must be installed between the
AC feeder conductors, the distribution panel with the
existing PV backfeed, and the PWRcell Inverter.
Features:
– Support for up to 7.68 kW AC coupled PV when
in Island Mode during a utility service interrup
-
tion.
– Leverages energy storage for Self Supply and
Priority Backup applications.
– Supports systems with Export Limiting enabled.
Requirements:
– PWRcell ATS must be installed to provide
backup.
– M6 PWRcell Battery minimum (six battery mod
-
ules).
General Wiring Guidance:
1.
See
. Land service entrance conduc
-
tors at the 'N' terminals of the PWRcell ATS.
2.
Land new feeder conductors from the 'T' terminals
of the PWRcell ATS to the line side of the main
distribution panel.
3.
Land PWRcell Inverter protected loads wiring to
the 'E' terminals of the ATS.
4.
Interconnect the PWRcell Inverter using a 40 A
backfeed breaker in the main panel or a supply-
side tap in the ATS with 40 A over current
protection (OCPD) in between.
5.
Ensure AC coupled PV is interconnected using a
backfeed breaker or a load-side tap in the main
distribution panel.
6.
Run Cat 5 or Cat 6 from the PWRcell ATS
Controller to the PWRcell Inverter for ATS controls.
7.
Install CTs and run Cat 5 or Cat 6 from the
PWRcell ATS Controller to one of the inverter CT
ports.
8.
Install SMMs on 240 V loads to manage additional
large house loads.
NOTE:
SMMs may only be used with lockout switch in
“Lockout Load on Generator” position for AC Coupled PV
applications.
Figure 5-11. AC-Coupled PV
The following is not supported with AC coupled PV at
this time:
– Interaction with third-party data sources from
other PV manufacturers.
– Additional metering of third-party PV.
– Parallel operation with DC coupled PV.
– Parallel operation with other energy/battery stor
-
age solutions.
– Installations with other manufacturers' transfer
switches.
– Support for dynamic load shedding with SMM
(priority return). Lockout will be supported.
– Support for three phase inverter installations.
PV
~
40 A
OCPD
Load
Load
A
AC Coupled PV System
B
PWRcell Inverter
C
PWRcell ATS
D
AC Main Panel
E
PWRcell Battery
F
Inverter AC Grid Connection
G
Utility
H
Protected Loads Wiring
I
ATS
J
CTs
K
SMM
A
E
C
D
013238
G
B
K
J
I
F
H
Summary of Contents for PWRcell X11402
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