Outback Power Systems GFX Series Inverter/Charger Operators Manual - Manual (Page 28)

Operation
26
900-0114-01-00 Rev A
Three-Phase Stacking
In three-phase stacking, three inverters are stacked to create three separate 120 Vac output legs.
These outputs are 120° out of phase. Any two outputs produce 208 Vac between them. The three
outputs can be used to power three-phase loads when all inverters work together.
 A three-phase system can continuously power 3.9 kVA – 4.5 kVA of loads, depending on the inverter model.
 Only three inverters, one per phase, may be installed in a three-phase arrangement.
Figure 9 Example of Three-Phase Stacking Arrangement (Three Inverters)
1.3 kVA 120 Vac
1.3 kVA 120 Vac
1.3 kVA 120 Vac
1.3 kVA
120 Vac
3.9 kVA
208 Vac
1.3 kVA
120 Vac
1.3 kVA
120 Vac