2787-2448
Notes on Operation
54
Product manual | Version: 1.0.0
Power Supply Pro 2
Table 59: Nominal values per UL
Information
Nominal values per UL
IN
200 … 240 VAC; 5.1 … 4.3 A; 50 … 60 Hz
OUT
24 … 28 VDC SELV; 40 A; 960 W
Ambient temp.
−25 … +70 °C
10.4.1 Derating (Temperature-Dependent)
Depending on the surrounding air temperature, it may be necessary to reduce the load.
Table 60: Derating (Temperature-Dependent)
Temperature Value
Derating
T
U
> +55 °C
−3 %/K (> +55 °C)
0
5
10
15
20
25
30
35
40
-40
-30
-20
-10
0
10
20
30
40
50
60
70
I
OUT
[A]
T [°C]
Figure 34: Derating (Temperature-Dependent)
10.4.2 Derating (Location-Dependent)
Depending on the installation altitude and the surrounding air temperature, it may be nec-
essary to reduce the load.
Table 61: Derating (Location-Dependent)
Temperature Value
Derating
T
U
> +50 °C
−8.9 %/1000 m (> +50 °C; 3600 m or higher)
T
U
> +55 °C
−8.6 %/1000 m (> +55 °C; 2100 m or higher)
