Use in a tightly sealed enclosure

When the DC/DC Converter 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 DC/DC Converter.

The following measurement results can be used as a reference to estimate the temperature rise inside the enclosure. The DC/DC Converter 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 DC/DC Converter with a distance of 1cm.

 

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

48Vdc

48Vdc

Load

24V, 8A; (=80%)

24V, 10A; (=100%)

Temperature inside the box

45.4°C

52.4°C

Temperature outside the box

21.0°C

21.0°C

Temperature rise

24.4K

31.4K