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 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 1 cm.
The following measurement results can be used as reference for estimating the temperature rise inside the housing.
| Case A | Case B |
|---|---|---|
Housing size | 180 mm x 180 mm x 165 mm Housing Rittal, protection class IP66 PK 9519 100, plastic | 180 mm x 180 mm x 165 mm Housing Rittal, protection class IP66 PK 9519 100, plastic |
Input voltage | 230 Vac | 230 Vac |
Load | 24 V, 8 A; (=80 %) | 24 V, 10 A; (=100 %) |
Temperature inside the housing | 45.3 °C | 50.2 °C |
Temperature outside the housing | 21.0 °C | 21.0 °C |
Temperature increase | 24.3 K | 29.2 K |