Power One AURORA MICRO-0.25-I-OUTD-US-208/240, Manual, Page: 67 / 78

Page
66
of
76 MICRO-0.25/0.3-I-OUTD-US-208/240 BCG.00612_AB
Part
7 Appendix
Figure 7-2: MICRO-0.3-I-OUTD-208/240 efficiency curve
7.1.2 P
OWER
D
ERATING
In order to allow inverter operation in safe thermal and electrical conditions, the unit automatically
reduces the value of the power fed into the grid. Power derating can take place due to adverse
environmental conditions or due to unsuitable input voltage values.
The conditions for power reduction due to environmental conditions and input voltage can also
occur at the same time, but the power reduction will always relate to the lower value measured.
7.1.2.1
Power Reduction Due To Environmental Condition
The power reduction value and the inverter temperature at which it occurs depend on the
ambient temperature and on many operating parameters. Example: input voltage, grid voltage
and power available from the photovoltaic field.
The inverter can therefore reduce the power during certain periods of the day and according to
the value of these parameters.
In any case, the inverter guarantees the maximum output power even at high temperatures,
provided the sun is not shining directly on it.