2787-2147
Notes on Operation
Product manual | Version: 1.0.0
53
Power Supply Pro 2
Table 59: Nominal values per UL
Information
Nominal values per UL
IN
100 … 240 VAC; 5.9 … 2.2 A; 50 … 60 Hz
OUT
24 … 28 VDC SELV; 20 A; 480 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
> +40 °C
−1 %/V (> +40 °C and < 100 VAC)
T
U
> +55 °C
−3 %/K (> +55 °C and < 230 VAC)
T
U
> +60 °C
−3 %/K (> +60 °C and ≥ 230 VAC)
0
4
8
12
16
20
-40
-30
-20
-10
0
10
20
30
40
50
60
70
I
OUT
[A]
T [ °C]
< 230 VAC
≥ 230 VAC
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
−10.7 %/1000 m (> +50 °C; 3600 m or higher)
T
U
> +55 °C
−11.2 %/1000 m (> +55 °C; 2100 m or higher)
