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3
STACKING FEATURES
The Freedom SW-RVCs can support two stacking
configurations. This gives the system engineer and/or installer
more options to work with when tailoring a system to meet load
demands. Multiple inverter/chargers of different power levels can
be installed in a system as stand alone, parallel stacked, or series
stacked.
NOTICE
INVERTER/CHARGER DAMAGE
Do not connect any wires to the AC INPUT L2 terminals on both
units at all when stacking two Dual Input Line/Dual Output Line (DI-
DO) units. The same applies to the AC OUTPUT L2 terminals on
both units. Any damage sustained by non-compliance may
damage the inverter/chargers and void the warranty. The only
exception is AC OUTPUT N2. See Parallel Stacking Using Two
Freedom SW-RVC units on page 54.
Failure to follow these instructions can result in equipment
damage.
53
Parallel Stacking
A parallel stacking configuration allows the inverter and charger
capacity of a system to be doubled. Parallel-stacked
inverter/chargers can operate from different battery banks,
meaning each unit is connected to its own battery bank.
However, it is highly recommended to only use a single battery
bank. See "DC Connections for Stacked Inverters" on page 46.
AC INPUT L2 terminals on both units must not be connected at
all as they are not monitored lines.
Freedom SW-RVC models with dual AC lines do not monitor
voltage and current on AC INPUT L2 and AC OUTPUT L2. If any
L2 line is connected, any current flowing in this branch will not be
displayed.
AC OUTPUT L1 and AC OUTPUT L2 must not be connected
together. However, the two output neutrals (AC OUTPUT N1 and
AC OUTPUT N2) can be tied together for redundancy. This
reduces stress on the neutral path internal to the unit since two
circuits will carry the load current.
975-1057-01-01
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