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%)

Temperature 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