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Stacking Features
The Freedom SW inverter/chargers provide supports 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.
In parallel stacking mode, only two Freedom SW inverter/chargers of the
same model can be parallel-stacked. For example, two Freedom SW 2012s
can be stacked in parallel as both units each have a 12-volt rating and a
power rating of up to 2000 watts. For now, a Freedom SW 2012 which is
12-volt rated cannot be parallel-stacked with a Freedom SW 2024 which is
24-volt rated. See parallel stacking section.
In series stacking mode, you may stack two different Freedom SW inverter/
chargers of different power ratings but same voltage ratings. For example, a
Freedom SW 2012 can be series-stacked with a Freedom SW 3012.
However, a Freedom SW 2012 which is 12-volt rated cannot be series-
stacked with a Freedom SW 2024 which is 24-volt rated. See series
stacking section.
DAMAGE TO INVERTER/CHARGER
When stacking two Dual Input Line/Dual Output Line (DI-DO) models
such as two Freedom SW 3012 units,
do not
connect any wires to the
AC INPUT L2
terminals on both units at all. The same applies to the
AC OUTPUT L2
terminals on both units. Any damage sustained by non-
compliance may result in non warrantable damage to the inverter/
chargers. The only exception is
AC OUTPUT N2
. See parallel stacking
section.
Failure to follow these instructions can damage the unit and/or
damage other equipment.
Freedom SW 3K2K InvChg Install Guide.book Page 43 Wednesday, October 12, 2011 4:40 PM