Puls Dimension Q-Series, Manual, Page: 27 / 27

QTD20.241
Q-Series
24V, 20A, DC I
NPUT
Oct. 2016 / Rev. 2.0 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.
www.pulspower.com Phone +49 89 9278 0 Germany
21.12. M
OUNTING
O
RIENTATIONS
Mounting orientations other than all terminals on the bottom require 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 DC/DC converter. Therefore, two different derating curves for continuous operation can be found below:
Curve A1 Recommended output current.
Curve A2 Max allowed output current (results in approximately half the lifetime expectancy of A1).
Fig. 21-6
Mounting
Orientation A
(Standard
orientation)
DC/DC
Converter
OUTPUT
INPUT
Output Current
0
10 20 30 40 60°C
4
12
16
20A
50
A1
8
Ambient Temperature
Fig. 21-7
Mounting
Orientation B
(Upside down)
DC/DC
Converter
OUTPUT
INPU T
Output Current
0
10 20 30 40 60°C
4
12
16
20A
50
8
A1
A2
Ambient Temperature
Fig. 21-8
Mounting
Orientation C
(Table-top
mounting)
Output Current
0
10 20 30 40 60°C
4
12
16
20A
50
8
A1
A2
Ambient Temperature
Fig. 21-9
Mounting
Orientation D
(Horizontal cw)
DC/DC
Converter
OUTPUT
IN
PU
T
Output Current
0
10 20 30 40 60°C
4
12
16
20A
50
8
A1
A2
Ambient Temperature
Fig. 21-10
Mounting
Orientation E
(Horizontal ccw)
DC/DC
Converter
OUTPUT
IN
PU
T
Output Current
0
10 20 30 40 60°C
4
12
16
20A
50
8
A1
A2
Ambient Temperature
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