44 Notes on Operation
Compact Power
787-1200 Power supply
Manual
Version 1.0.0
6.3
Derating
The maximum load depends on the surrounding air temperature.
Table 27: Nominal Values according to UL
IN
100 … 240 VAC; < 0.27 A; 50 … 60 Hz
OUT
24 VDC SELV, 0.5 A
Ambient temp.
+55 °C
Restrictions (derating) apply when the power supply unit is used in applications
that exceed its performance specifications; these are listed below:
Table 28: Deratings
Temperature value
Derating
See figure
T
U
> +55 °C
−
2.6 %/K
“Temperature Load Curve”
Figure 18: Temperature Load Curve
