ABB PVS800-57B

Technical data 47
Derating
 Temperature derating
The nominal power (100%) of the inverter is reached in +50 °C. In lower temperatures, the
inverter can supply up to 120% power. If the ambient temperature exceeds the nominal
ambient temperature, the load capacity (current and power) of the inverter decreases.
Use the following correction factors when you calculate the available inverter power at
different temperatures:
• -20 °C – +25 °C (-4 °F – +77 °F), the power vs temperature ratio is 0 P(%) per 1 °C.
• +25 °C – +50 °C (+77 °F – +122 °F), the power vs temperature ratio is -0.8 P(%) per
1°C.
• +50 °C – +55 °C (+122 °F – +131 °F), the power vs temperature ratio is -4 P(%) per
1°C.
• +55 °C – 6+0 °C (+131 °F – +140 °F), the power vs temperature ratio is -16 P(%) per
1°C.
T
110
100
+40 °C
+104 °F
+60 °C
+140 °F
90
+50 °C
+122 °F
+30 °C
+86 °F
120
P(%)
-20 °C
-4 °F
-10 °C
+14 °F
...
+20 °C
+68 °F
0
...
Ambient temperature
Max. output power
80