PIM90.245
Feb. 2022 / Rev. 2.0 DS-PIM90.245-EN
www.pulspower.com
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All parameters are specified at 24V, 3.8A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
21.6. 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 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. The following
measurement results can be used as a reference to estimate the temperature rise inside the enclosure.
Case A
Case B
Enclosure size
110x180x165mm
Rittal Typ IP66 Box
PK 9516 100
plastic
110x180x165mm
Rittal Typ IP66 Box
PK 9516 100
plastic
Input voltage
230Vac
230Vac
Load
24V, 3.04A; (=80%)
24V, 3.8A; (=100%)
Temperature inside the box
34.2°C
35.9°C
Temperature outside the box
24.9°C
25.2°C
Temperature rise
9.3K
10.7K
