Three-Phase Stacking; Figure 14 Example Of Three-Phase Stacking Arrangement (Three Inverters); Figure 15 Example Of Three-Phase Stacking Arrangement (Nine Inverters) - Outback FXR2012A Operator's Manual

Operation

Three-Phase Stacking

In three-phase stacking, inverters create three separate 120 Vac
 The three legs operate independently of each other. The output of each inverter is 120° out of phase
from the others. Any two outputs produce 208 Vac between them. The outputs can be used to power
three-phase loads when all inverters work together.
 Up to nine inverters, three per phase, may be installed in a three-phase arrangement. Figure 14 shows one
inverter per phase. Figure 15 shows three inverters per phase. All inverters must be the same model.
Master
2.0 kVA 120 Vac
B Phase Master
2.0 kVA 120 Vac
C Phase Master
2.0 kVA 120 Vac
Figure 14 Example of Three-Phase Stacking Arrangement (Three Inverters)
Master
2.0 kVA 120 Vac
B Phase
Master
2.0 kVA 120 Vac
C Phase
Master
2.0 kVA 120 Vac
Figure 15 Example of Three-Phase Stacking Arrangement (Nine Inverters)
6
Output voltages may vary with regional voltage standards.
46
Slave
2.0 kVA 120 Vac
Slave
2.0 kVA 120 Vac
Slave
2.0 kVA 120 Vac
6
output legs in a wye configuration.
LOAD PANEL
2.0 kVA
120 Vac
2.0 kVA
120 Vac
2.0 kVA
120 Vac
Slave
2.0 kVA 120 Vac
Slave
2.0 kVA 120 Vac
Slave
2.0 kVA 120 Vac
6.0 kVA
OR
208 Vac
LOAD PANEL
6.0 kVA
120 Vac
18.0 kVA
6.0 kVA
OR
208 Vac
120 Vac
6.0 kVA
120 Vac
900-0167-01-00 Rev A