Outback Power Systems FLEXmax Extreme Owners Manual - Manual (Page 67)

Specifications
900-0150-01-00 Rev A 65
Temperature Range and Derating
Figure 61 Temperature Range
In standard installations, the FLEXmax Extreme can operate at its full 80-amp capacity at ambient temperatures
up to 45°C (113°F). Above this temperature, its output is derated as shown in Figure 61. At 60°C (140°F), the
output is derated to a maximum of 53 Adc. The controller is not rated for operation above this temperature.
If the optional fan is installed (see page 10), the FLEXmax Extreme does not begin to derate until it reaches 55°C
(131°F). At 60°C (140°F), the output is only derated to 71 Adc. The controller is still not rated above this
temperature, even with the fan installed.
See page 32 for the internal temperature readings which can cause temperature derating.
DEGREES CELSIUS
With fan Without fan
AMPERES
53 A
71 A
45°C 55°C