Puls CD Series - Use in a Tightly Sealed Enclosure

CD10.241
CD-Series
DC/DC Converter 24V/24V, 10A, 240W
Sep. 2019 / Rev. 1.4 DS-CD10.241-EN All values are typical figures specified at 24Vdc input voltage 24V, 10A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
26/27
22.7. USE IN A TIGHTLY SEALED ENCLOSURE
When the device 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 device.
In the following test setup, the device is placed in the middle of the enclosure; no other heat producing items are
inside the enclosure. The load is placed outside the enclosure.
The temperature sensor inside the enclosure is placed in the middle of the right side of the device 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
24Vdc 24Vdc
Load
24V, 8A; (=80%) 24V, 10A; (=100%)
Tem
perature inside the box 52.2°C 59.3°C
Temperature outside the box
31.0°C 31.4°C
Temperature rise
21.2K 27.9K