48
Stacking Features
This guide for use by qualified personnel only.
Series Stacking
A series stacking configuration allows two inverters to be
configured to produce 120
DQG
volts AC, also known as, a
single-phase three-wire configuration.
$XWR3RZHU
models
with the same DC voltage rating can also be assembled in a
system. For example, a
Q$XWR3RZHU
can be installed
on
L1
while
DQ$XWR
P
RZHU
operates on
L2
. However,
it is important to remember that for
$XWR3RZHU
I
nverter/
C
hargers that support dual line AC configuration (DI-DO),
only
AC INPUT L1
terminal should be used and that the
AC
INPUT L2
terminal must have no connections at all. If
L2
is
connected to any incoming or outgoing AC line, the inverter/
charger may suffer internal damage not covered by warranty.
GENERAL PRECAUTIONS
• Install stacked inverter/chargers in close proximity to each other.
• Connect AC neutrals together close to the inverters. Keep input and
output neutrals isolated.
• Connect the inverter’s battery negative terminals together according
to instructions in “Step 4: Connecting the DC Cables” on page 33.
• Make all AC and DC connections and verify that they are made
according to this guide. Make sure that all connections are tight
(especially the DC side). Connect the stacking cable to each inverter’s
stacking port.
• Each inverter must be enabled and turned on individually before AC
power becomes available.
Failure to follow these instructions can damage the unit and/or damage
other equipment.
Summary of Contents for 091-269-12-2000
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