YR40.245
Y-Series
12-28V,
40A,
S
INGLE
R
EDUNDANCY
M
ODULE
Oct. 2013 / Rev. 1.0 DS-YR40.245-EN
All parameters are specified at 24V, 40A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted
www.pulspower.com Phone +49 89 9278 0 Germany
19.6.
M
OUNTING
O
RIENTATIONS
Mounting orientations other than input terminals on the bottom and output on the top 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 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 in approximately half the lifetime expectancy of A1).
Fig. 19-3
Mounting
Orientation A
(Standard
orientation)
YR40.245
Redundancy
Module
OUTPUT
INPUT
Output Current
0
10
20
30
40
60°C
10
20
30
40A
50
A1
Ambient Temperature
Fig. 19-4
Mounting
Orientation B
(Upside down)
YR40.245
Redundancy
Module
OUTPUT
INPUT
Output Current
0
10
20
30
40
60°C
10
20
30
40A
50
A1
Ambient Temperature
Fig. 19-5
Mounting
Orientation C
(Table-top
mounting)
Output Current
0
10
20
30
40
60°C
10
30
40A
50
20
A1
A2
Ambient Temperature
Fig. 19-6
Mounting
Orientation D
(Horizontal cw)
YR40.245
Redundancy
Module
OUTPUT
IN
PU
T
Output Current
0
10
20
30
40
60°C
10
30
40A
50
20
A1
A2
Ambient Temperature
Fig. 19-7
Mounting
Orientation E
(Horizontal ccw)
YR40.245
Redundancy
Module
OUTPUT
IN
PU
T
Output Current
0
10
20
30
40
60°C
10
30
40A
50
20
A1
A2
Ambient Temperature
18/18
