Datasheet

QTD20.241
Q-Series
24V, 20A, DC INPUT
Mar 2012 / Rev. 1.2 DS-QTD20.241-EN
All parameters are specified at 24V, 20A, 600Vdc input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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26.11. MOUNTING ORIENTATIONS
Mounting orientations other than input terminals on the bottom and output on the top requires a reduction in
continuous output power or a limitation in the maximum allowed ambient temperature. The amount of reduction
influences the lifetime expectancy of the power supply. Therefore, two different derating curves for continuous
operation can be found below:
Curve A1 Recommended output current.
Curve A2 Max allowed output current (results approx. in half the lifetime expectancy of A1).
Fig. 27-12
Mounting
Orientation A
Standard
Orientation
Power
Supply
OUTPUT
INPUT
Output Current
0
10 20 30 40
60°
C
4
12
16
20A
50
A
1
8
Ambient Temperature
Fig. 27-13
Mounting
Orientation B
(Upside down)
Power
Supply
OUTPUT
INPUT
Output Current
0
10 20 30 40
60°
C
4
12
16
20A
50
8
A
1
A
2
Ambient Temperature
Fig. 27-14
Mounting
Orientation C
(Table-top
mounting)
Output Current
0
10 20 30 40
60°
C
4
12
16
20A
50
8
A
1
A
2
Ambient Temperature
Fig. 27-15
Mounting
Orientation D
(Horizontal cw)
Power
Supply
OUTPUT
INPUT
Output Current
0
10 20 30 40
60°
C
4
12
16
20A
50
8
A
1
A
2
Ambient Temperature
Fig. 27-16
Mounting
Orientation E
(Horizontal ccw)
Power
Supply
OUTPUT
INPUT
Output Current
0
10 20 30 40
60°
C
4
12
16
20A
50
8
A
1
A
2
Ambient Temperature
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