Mounting Orientations. Puls DIMENSION YR40 DIN rails power supply din rail power supply U

Y-Series

YR40.241

24-28V, 40A, D

UAL

R

EDUNDANCY

M

ODULE

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:

Recommended output current.

Max allowed output current (results in approximately half the lifetime expectancy of A1).

Curve A1

Curve A2

Fig. 19-3

Mounting

Orientation A

(Standard orientation)

INPUT

YR40

Redundancy

Module

Output Current

40A

30

20

A1

10

Ambient Temperature

OUTPUT

0

20 30 40 50 60 70°C

Fig. 19-4

Mounting

Orientation B

(Upside down)

Redundancy

OUTPUT

Module

Output Current

40A

30

A1

YR40

20

10

INPUT

Ambient Temperature

0

20 30 40 50 60 70°C

Fig. 19-5

Mounting

Orientation C

(Table-top mounting)

Output Current

40A

30

20

A2

A1

Fig. 19-6

Mounting

Orientation D

(Horizontal cw)

Fig. 19-7

Mounting

Orientation E

(Horizontal ccw)

10

0

20

Ambient Temperature

30 50 60

Output Current

40A

30

20

10

0

20 30

Ambient Temperature

40 50 60

Output Current

40A

30

40

20

10

0

20 30

Ambient Temperature

40 50 60

A2

A1

A2

A1

70°C

70°C

70°C

Oct. 2010 / Rev. 1.0 DS-YR40.241-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

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