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 housing. The DC/DC converter is placed in the center of the housing, and there are no other heat-generating parts in the housing.

The temperature sensor in the housing is located in the middle of the right side of the DC/DC converter at a distance of 1 cm.

 

Case A

Case B

Housing size

110x180x165 mm
Rittal Type IP66 Box
PK 9516 100,
plastic

110x180x165 mm
Rittal Type IP66 Box
PK 9516 100,
plastic

Input voltage

48 Vdc

48 Vdc

Load

24 V, 8 A; (=80 %)

24 V, 10 A; (=100 %)

Temperature inside the box

45.4 °C

52.4 °C

Temperature outside the box

21.0 °C

21.0 °C

Temperature rise

24.4 K

31.4 K