User manual

User Manual Page 72 of 74
(PVI-6000-OUTD-UK-W Rev.1.0)
8.5 Power Derating
In order to ensure reliable operation under different ambient and loading conditions,
the AURORA inverters automatically decrease the output power as a function of the
temperature and input voltage.
Power reduction due to environmental conditions
Power reduction and temperature at which it occurs depend on many parameters other
than ambient temperature, such as input voltage, grid voltage, etc. The AURORA
inverters can thus decrease power output during certain periods of the day according to
these parameters.
In any case, the AURORA inverters deliver full output power up to 40°C ambient as
long as they are not directly exposed to sunlight or other heat sources.
Power reduction due to input voltage
The graph in Fig 27 shows automatic power output derating as a function of the input
voltage.
Power Derating
(max input current)
Non Operating Range
Voltage Derating Range
Non Operating Range
Fig. 27 - Output power derating due to the input voltage
Power derating due to environmental conditions and to the input voltage can occur at
the same time. In this case the available output power is determined as a lower of the
two numbers.