Rockwell Automation Publication 1606-RM028A-EN-P - September 2021
27
Use in a Tightly Sealed
Enclosure
When the power supply unit is installed in a tightly sealed enclosure, the
temperature inside the enclosure is higher than outside of the enclosure. In
such situations, the inside temperature defines the ambient temperature for
the power supply unit.
The following measurement results can be used as a reference to estimate the
temperature rise inside the enclosure. These measurements are taken with the
power supply unit in the middle of the enclosure, with no other heat-
producing items inside the enclosure.
Attributes
Values
Enclosure size
254 x 180 x 165 mm
(4.88 x 7.09 x 6.50 in.)
Rittal Typ IP66 Box
PK 9522 100, plastic
Input voltage
230V AC
Load
48V, 16 A; (=80%)
(1)
(1) The load is placed outside the box.
Temperature inside enclosure
65.6 °C (150.08 °F)
(2)
(2) Temperature in the middle of the right side of the
power supply unit with a distance of 20 mm (0.79 in.).
Temperature outside enclosure
24.1 °C (75.38 °F)
Temperature rise
41.5K
