Power Limitation (Power Derating); Power Reduction Due To Environmental Conditions - ABB REACT 2 Series Product Manual

P
ower limitation (Power Derating)
The aforementioned power limits may vary depending on the grid standard of the country of
installation.
P
ower reduction due to environmental conditions
REACT2-UNO-3.6-TL
REACT2-UNO-5.0-TL
In order to allow inverter operation in safe thermal and electrical
conditions, the unit automatically reduces the amount of power fed into
the grid.
Power limiting may occur due to:
Over-frequency of grid voltage
input voltage values.
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
The inverter can therefore reduce the power during certain periods of the
day 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.
Pout Vs Ambient temperature
100
95
90
85
80
75
70
65
60
REACT 2-UNO-3.6-TL
55
50
45
REACT 2-UNO-5.0-TL
40
35
30
25
20
15
10
5
0
10 15 20 25
50 59 68 77
- 31 -
30 35 40 45 50
86 95 104 113 122
Ambient temperature [°C and °F]
2 - Characteristics
55 60
131 140