Outback Power Systems VFX Series Programming Manual - Manual (Page 26)

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5. 3-Phase
• Three—and only three— FXs are connected, one to each of three 120 VAC output legs that produce
208 VAC between any two legs of the system.
• The HUB requires a jumper between the two Slave FXs for this stacking to function (see HUB
Manual).
• The AC input source (generator or grid) must be a 120 VAC/208VAC 3-phase source.
Stacking and Assigning FX Status
Use the MATE to establish the order or hierarchy of all the system FXs by designating each as one of
the following:
• 1-2ph Master (OutBack Parallel, OutBack Series, or Classic Series stacking)
• Classic Slave (Classic Series stacking)
• OB (OutBack) Slave L1 (OutBack Parallel, OutBack Series, or OutBack Series/Parallel stacking)
• OB (OutBack) Slave L2 (OutBack Parallel, OutBack Series, or OutBack Series/Parallel stacking)
• 3ph Master (3-Phase stacking)
• 3ph Slave (3-Phase stacking)
1. 1-2ph Master
• This is the default ranking of every FX. It applies to one-phase and two-phase systems.
• One Master FX is established for every multiple FX system.
*A&B
A&C
B&C
Any two
legs*
208 VAC
6kW
3 kW 120 VAC
LOAD
3-phase, all
three legs,
9kW
or
3 kW 120 VAC
3 kW 120 VAC
Phase B
120 VAC
3kW
Phase A
120 VAC
3kW
Phase C
120 VAC
3kW
or