Operation
900-0167-01-00 Rev A 45
Figure 12 Example of Parallel Stacking Arrangement (Three Inverters)
Series/Parallel Stacking (Quad-Stack or Larger)
In series/parallel stacking, inverters create separate 120 Vac
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output legs and 240 Vac collectively, as in
series stacking. However, in this configuration, each output has parallel inverters. One output
contains the master; the other uses a subphase master. Each output has at least one slave.
The 120 Vac loads on each leg can exceed the size of a single inverter. They can be powered by all the
inverters on that leg.
The slave outputs are controlled directly by their respective master inverters. They cannot operate
independently. The slaves can go into Power Save mode when not in use.
Up to eight inverters may be installed in a series/parallel arrangement. All inverters must be the same model.
Figure 13 Example of Series/Parallel Stacking Arrangement (Four Inverters)
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Output voltages may vary with regional voltage standards.
6.0 kVA
120 Vac
2.0 kVA 120
2.0 kVA 120 Vac
2.0 kVA 120 Vac
LOAD PANEL
Master Slave Slave
3 kVA 120 Vac
3 kVA 120 Vac
12 kVA
240 Vac
6 kVA
120 Vac
6 kVA
120 Vac
3 kVA 120 Vac
3 kVA 120 Vac
LOAD PANEL
OR
L2 Phase
Master
Slave
Master
Slave
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