50 Notes on Operation
Compact Power
787-1211 DC power supply, 12 V
Manual
Version 1.
1
.0
P o s :
5 3 . 9 /A lle S e rie n ( A llg e m ein e M o d ule ) /Ü b er s ch rif te n /E be n e 2 /D e ra tin g - Ü be r sc hr ift 2 @ 1 9\ m od _ 13 9 92 9 0 80 6 14 1 _2 1 .d o cx @ 15 2 9 83 @ 2 @ 1
6.4
Derating
P o s :
5 3 . 10 / S er ie 7 87 ( E PS I TR O N ) /In B e tr ie b ne h m en / D
e r at in g 78 7 -1 2x 1 @ 32 \m od _ 15 3 35 3 41 6 9 74 7 _2 1 .d oc x @ 49 3 08 4 @ @ 1
The maximum load is dependent on the surrounding air temperature and the
input voltage.
Table 31: Nominal Values according to UL
IN
100 … 240 VAC; 1.3 A / 50 … 60 Hz
OUT
12 VDC, 5 A
Ambient temp.
+45 °C
Restrictions (derating) apply when the power supply unit is used in applications
that exceed its performance specifications; these are listed below:
Table 32: Deratings
Nominal voltage Temperature value T
U
Derating
90 VAC
> +45 °C
−
3.0 %/K
230 VAC
> +50 °C
−
2.3 %/K
< 100 VAC
--
−
1.5 %/V
Figure 21: Temperature Load Curve
P o s :
5 3 . 11 / D ok u m en ta tio n a llg e m e in /G lie d e ru n gs e le m en te /- -- Se it en w e ch s el- -- @ 3 \m o d_ 1 22 1 1 08 0 45 0 78 _ 0. d oc x @ 2 1 8 10 @ @ 1
