Rockwell Automation 1606-XLDC92D Power Supply Reference Manual - Manual (Page 19)

All parameters are specified at 24V, 3.8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time, unless noted otherwise.
Rockwell Automation Publication 1606-RM023A-EN-P — January 2014 19
Bulletin 1606 Switched Mode Power Supplies
21.8. Series Operation
This DC/DC-converter is designed to meet the NEC Class 2 requirements. Do not use in series to increase the output
voltage. This would increase the output power for the NEC Class 2 circuit and violate the NEC Class 2 limitations.
21.9. Charging of Batteries
This DC/DC converter cannot be used to charge batteries. The output voltage is not adjustable.
21.10.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
Enclosure: Rittal Typ IP66 Box PK 9516 100, plastic, 110x180x165mm
Load: 24V, 3A; (=80%) load is placed outside the box
Input: 24Vdc
Temperature inside enclosure: 37.7°C (in the middle of the right side of the DC/DC converter with a distance of 2cm)
Temperature outside enclosure: 22.2°C
Temperature rise:
15.5K