Power Supply PS1000-A6-48.5
Application Notes
20
21
-1
1
41
25.10
Use in a Tightly Sealed Enclosure
When the power supply is installed in a tightly sealed enclosure, the temperature inside
the enclosure will be higher than outside. In such situations, the inside temperature defines
the ambient temperature for the power supply.
The following measurement results can be used as a reference to estimate the temperature
rise inside the enclosure.
The power supply is placed in the middle of the box, no other heat producing items are inside
the box
The temperature sensor inside the box is placed in the middle of the right side of the power
supply with a distance of 1cm.
25.11
Mounting Orientations
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 power supply.
Therefore, two different derating curves for continuous operation can be found below:
Case A
Case B
Case C
Case D
Enclosure size
110
x180x165mm
Rittal Typ IP66 Box
PK 9516 100,
plastic
110
x180x165mm
Rittal Typ IP66 Box
PK 9516 100,
plastic
180
x180x165mm
Rittal Typ IP66 Box
PK 9519 100,
plastic
180
x180x165mm
Rittal Typ IP66 Box
PK 9519 100,
plastic
Input voltage
230Vac
230Vac
230Vac
230Vac
Load
48V, 4.3A; (=
80%
) 48V, 5.4A; (=
100%
) 48V, 4.3A; (=
80%
) 48V, 5.4A; (=
100%
)
Temperature inside
the box
43.7°C
48.6°C
40.9°C
45.0°C
Temperature outside
the box
24.1°C
25.4°C
23.9°C
25.0°C
Temperature rise
19.6K
23.2K
17.0K
20.0K
Curve A1
Recommended output current.
Curve A2
Max allowed output current (results in approximately half the lifetime
expectancy of A1).
