Thomas & Betts Introduction, Freedom 15 & 15D Watts Freedom 20 & 20D, Electronic Protection

INTRODUCTION

This owner’s manual describes the Freedom 458 Series CombiTM 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 inverter provides regulated 120 volt AC power at a crystal controlled frequency from a deep cycle battery bank and is rated at:

Freedom 15 & 15D	1500 watts
Freedom 20 & 20D	2000 watts

The output is a modified sine wave and is compatible with most appliances, tools and other 120 VAC equipment. (Note: Certain laser printers, breadmakers, digital clocks and small battery chargers may not operate on modfied sinewave.) An idle mode reduces battery power consumption when loads are removed from the inverter. There is a low battery cutout protection circuit and momentary surge power of more than twice the inverter rating for starting electric motors. High efficiency insures the longest possible battery life between charges.

•The internal transfer switch allows the Freedom Inverter/Charger to be connected to an external AC source and transfer the source

power through directly to the loads. When the external AC power source is disconnected, the transfer switch allows automatic switching back to the inverter.

The Freedom Inverter/Charger operates as a self-contained backup power system, just add batteries.

•Freedom battery chargers are electronically controlled and rated at a maximum output current:

Freedom 15 & 15D	75 Amps DC
Freedom 20 & 20D	100 Amps DC

They are designed to rapidly and optimally charge wet, gel, or Absorbed Glass Mat (AGM)** cell deep-cycle batteries. Battery charging is automatically accomplished in 3 stages: Bulk Charge, Acceptance Charge and Float Charge.

Using a 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, no attention or maintenance is required.

Electronic Protection

Fast-acting electronic circuits protect the inverter from overloads and short circuits. Other protection includes a low and high battery voltage cutoff and automatic shutdown if an over temperature condition occurs. When the fault condition is corrected, the unit will automatically reset. Example: remove overload, charge batteries or allow to cool.

	**Battery type selection is set on the front of the unit
	or with an optional remote (Remote Control Panel or
Freedom 20D	Link Instrument).

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Part No. 90-0123-00 Libertycombi.p65 10/26/98