Derating; Temperature Derating - ABB PVS800-57B Hardware Manual

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.
Max. output power
P(%)
120
110
100
90
80
0
-20 °C -10 °C
-4 °F +14 °F
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.
...
+20 °C
+68 °F
Ambient temperature
+30 °C +40 °C
+86 °F +104 °F
Technical data 47
+50 °C +60 °C
+122 °F +140 °F
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