787-1226
Notes on Operation
Product manual | Version: 1.0.0
35
Compact Power Supply
-30 -20 -10 0
10 20 30 40
55
70
60
50
40
20
60
80
100
Load (%)
Derating Curve
Surrounding Air Temperature (°C)
Figure 22: Temperature Load Curve
7.4 Short-Circuit and Overload Behavior
The product’s output is electronically protected against overload and short circuits.
The following values apply to the description below:
•
I
OUT
Nominal output current (see
8
)
•
I
OUT(IST)
Actual output current
•
U
OUT
Output voltage (see
8
The output voltage U
OUT
is reduced at an output current I
OUT(IST)
in the range 1.05 × I
OUT
<
I
OUT(IST)
< 1.35 × I
OUT
(see Figure ).
In the event of a short circuit (1.4 × I
OUT
< I
OUT(IST)
) the output voltage U
OUT
is switched off.
The product checks whether the short circuit is still present through cyclical re-activation
of the output voltage (Hiccup mode, see also
8
).
After eliminating the overload or short circuit, the product automatically supplies the out-
put voltage as indicated.
100%
105%
135%
140%
160%
Constant
Power Mode
24
(VDC)
0
OUT
normal
I
Overload Mode
(105 % up to 135 %)
Constant Power Mode
Short Circuit Protection
(140 % up to 160 %)
Auto Recovery
OUT
U
OUT
(ADC)
I
Figure 23: Output Characteristics
