Diagram

48V
Array (+)
Array (-)
GFPD-600V
Backup Inverter/
Charger System
<---- from Generator
<---- from Main Panel
----> to Critical Loads
Grid-Tie
Inverter
----> to Electrical Grid
TS-MPPT-600V-TR
(GT Inverter has
built-in GFP)
Morningstar TriStar MPPT 600V with Transfer Switch
Grid-Tie PV with Battery Backup System Diagram for Transformerless Inverters
GT INV PV
Disconnect
+ -
PV Array
~6kW
DC BOS
Backup PV
Disconnect
AC
DC
+
-
Note: This is an example for using the TriStar MPPT 600V
TR with Transformerless inverters. Other code required
components may be required.
NEC 690.14: Equipment such as photovoltaic (PV) source
isolating switches … shall be permitted on the PV side of
the PV disconnecting means.
Inverters which have a Grounded PV array can utilize a
single-pole switch before the TriStar MPPT 600V TR as a
single PV system disconnect.
AC
DC