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Copyright 2003 OutBack Power Systems, Inc. FX & VFX Series Inverter/Charger System Installation & Programming Manual
19009 62
nd
Ave NE, Arlington WA 98223 USA 900-0027-1
Tel 360 435 6030 Fax 360 435 6019
Rev 7.2 08/26/05 Page 21
FX SYSTEM CONFIGURATION – PARALLEDED QUAD FX SYSTEM
Paralleled Quad FX System
The following diagram illustrates a typical paralleled FX installation using four FX’s. This diagram is for a non-Mobile FX installation
only. Below this diagram are notes for how to change this diagram to accommodate a Mobile installation. The AC wiring from
the AC source and to the AC loads must handle 200 amps AC or more. The AC wiring connected to the QUO 100A dual bypass
breakers must handle 100 amps AC or more. All other AC wiring must handle a capacity of 50 amps AC or more. For a ‘Mobile’ FX
system, 30A input breakers should be used due to the maximum AC input pass-through rating of the Mobile FX’s. This type of FX
system can continuously power 8-14.4KW of loads depending on which model is used. Connecting more power than the continuous
rating of the FX may cause breakers to trip or the FX to shut off its AC output. A HUB and a MATE must be connected to stack these
FX’s in parallel. The MATE must be connected to adjust any parameters or to display any meters. Once the FX has been programmed
using the MATE, the MATE can be disconnected. The programming will be saved within the FX’s non-volatile memory even if the FX is
completely shut down.
NOTES:
Program the top FX as Master (1-2PH MASTER) and the three lower FX’s as OutBack L1 Slaves (OB SLAVE L1). See the
STACKING INFORMATION section of the manual for more info.
NON-MOBILE FX NOTES: The AC OUTPUT NEUTRAL IS NOT BONDED TO THE CHASSIS OR THE GROUND TERMINAL of
the FX system. This connection is to be made by the installer either in the AC service entrance or within the AC load distribution panel
of the electrical system. The AC input, AC output and DC terminals are isolated from the metal chassis of the FX. Proper grounding of
these circuits and the chassis of the FX is the responsibility of the installer.
MOBILE FX NOTES: The AC input source to the FX (grid and/or generator) must have an internal neutral-ground connection. On
the above diagram the AC source’s neutral conductor must go directly to the FXs AC NEUTRAL IN terminal or to a separate neutral
busbar that is isolated from the FX’s AC output neutral. The AC output of the FX must go to a separate AC output busbar that is
isolated from the AC input neutral. A bypass mechanism must bypass the AC source’s hot and neutral wires. Proper grounding of the
DC circuit and the chassis of the FX is the responsibility of the installer.