Part No. 90-0113-00
Fdmman2.p65 2/98
This owner’s manual describes the
Freedom Combi
TM
Inverter/Chargers from
Heart Interface. These units perform three
distinct functions:
1. DC to AC power inverting.
2. Automatic transfer switching between
inverter power and incoming AC power.
3. Automatic 3-Stage Battery charging plus
manual battery equalizing.
• The inverters provide regulated 120 Volt AC
power and crystal controlled frequency from a
deep cycle battery bank in specified watts:
Freedom 10 . . . . . . . . . 1000 watts
Freedom 15 . . . . . . . . . 1500 watts
Freedom 20 . . . . . . . . . 2000 watts
Freedom 25 . . . . . . . . . 2500 watts
The output is a modified sine wave and
is compatible with most appliances, tools and
other 120 VAC equipment. An idle circuit
reduces battery power consumption when the
loads are removed from the inverter. There is
a low battery cutout circuit and momentary
surge power of more than twice the inverter
rating is available for starting electric motors.
High efficiency insures the longest possible
battery life between recharges.
• The internal transfer switch allows the
Freedom Inverter/Charger to be connected to
an external AC source and transfer the
source power through to the loads. When
disconnected, the transfer switch allows
automatic switching back to the inverter.
INTRODUCTION
The Freedom Inverter/Charger operates
as a self-contained backup power system, just
add batteries.
• Freedom battery chargers are electronically
controlled and rated:
They are designed to rapidly and opti-
mally recharge either wet** or gel** cell
deep-cycle batteries. Battery charging is
accomplished in 3 automatic stages: Bulk
Charge, Acceptance Charge and Float
Charge. Using a Freedom Remote Control
Panel or Link Instrumentation, a manually-
engaged Equalizing Charge cycle is possible.
Simple, automatic operation is made
possible by the microprocessor in the
Freedom Inverter/Charger. In most cases, the
unit is left ON and no attention or maint-
enance is required.
4
*Also available in 32 Volt model rated
at 35 Amps DC
Model
Freedom 10
Freedom 15
Freedom 20*
Freedom 25
12 Volts
50 Amps DC
75 Amps DC
100 Amps DC
130 Amps DC
24 Volts
25 Amps DC
N/A
50 Amps DC
65 Amps DC
Electronic Protection
Fast-acting electronic circuits protect the
inverter from extreme overloads and short
circuits. Other protection includes a low and
high battery cutoff and automatic shutdown if
over temperature occurs. The fault condition
must be eliminated before reset will occur.
Example: remove overload, recharge
batteries or allow to cool. Reset by cycling the
power switch on the Freedom Remote Control
Panel, Link Instrument or the Freedom unit
one time--OFF/ ON.
**Adustable with optional remote (Freedom
Remote Panel or Link Instrumentation)
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