Use in a tightly sealed enclosure
When the power supply is installed in a tightly sealed enclosure, the temperature inside the housing is higher than outside. In this case, the temperature inside the housing is considered the ambient temperature for the power supply.
The following measurement results can be used as reference for estimating the temperature rise inside the housing.
The power supply is positioned at the center of the housing. There are no other heat-generating elements in the housing.
The temperature sensor in the housing is positioned at the center on the right side of the power supply with a distance of 1cm.
| Case A | Case B |
|---|---|---|
Housing size | 110x180x165mm Rittal housing, protection class IP66 PK 9516 100, plastic | 110x180x165mm Rittal housing, protection class IP66 PK 9516 100, plastic |
Input voltage | 230Vac | 230Vac |
Load | 24V, 4A; (=80%) | 24V, 5A; (=100%) |
Temperature inside the housing | 38.3°C | 39.6°C |
Temperature outside the housing | 26.1°C | 25.5°C |
Temperature increase | 12.2K | 14.1K |