Inverter Overload Operation; Invert Power Derating Vs. Ambient Temperature - Xantrex Freedom HF Owner's Manual

Inverter Overload Operation

This graph shows how long (measured in milliseconds) the
Freedom HF will operate for a given output current (measured in
Amps).
Both the Freedom HF 1000/1055 models and Freedom HF
1500/1800 models are represented in the illustration below.
The graph illustrates surge operation at 25 °C.
Time (ms)
Freedom HF 1000/1055
4000
1600
1400
1200
1000
800
600
400
200
0
10 12 14
975-0390-01-01
Freedom HF 1500/1800
16 18 20 30 40 50
Output Current (amps)
Invert Power Derating vs.
Ambient Temperature
If the unit is in inverter mode and in elevated ambient temperature
above 25 °C, you will have to reduce power draw according to the
following chart to avoid over-temperature shutdown.
watts
@12.5 volts
1000
@11.5 volts
900
850
800
750

Inverter Overload Operation

Freedom HF 1000/1055
30°C
~33°C
900 watts
850 watts
800 watts
750 watts
25 30 35 40 45 50
°C
41