Data Sheet
Table Of Contents
- 1. Intended Use
- 2. Installation Requirements
- 3. Input Voltage
- 4. Soft-start and Input Inrush Current Surge
- 5. Output
- 6. Hold-up Time
- 7. Efficiency and Power Losses
- 8. Functional Diagram
- 9. Front Side and User Elements
- 10. Terminals and Wiring
- 11. Reliability
- 12. EMC
- 13. Environment
- 14. Protection Features
- 15. Safety Features
- 16. Dielectric Strength
- 17. Approvals
- 18. RoHS, REACH and Other Fulfilled Standards
- 19. Physical Dimensions and Weight
- 20. Accessories
- 21. Application Notes
- 21.1. Peak Current Capability
- 21.2. Back-feeding Loads
- 21.3. Inductive and Capacitive Loads
- 21.4. External Input Protection
- 21.5. Requirements for the Supplying Source
- 21.6. Parallel Use to Increase Output Power
- 21.7. Parallel Use for Redundancy
- 21.8. Series Operation
- 21.9. Charging of Batteries
- 21.10. Use in a Tightly Sealed Enclosure
- 21.11. Mounting Orientations
CD5.241-L1
CD-Series
DC/DC Converter 24V, 3.8A
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 violates the NEC Class 2 limitations. Use
CD5.241 or CD5.241-S1.
21.9. CHARGING OF BATTERIES
This DC/DC converter can not 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
Mar. 2016 / Rev. 1.2 DS-CD5.241-L1-EN
All parameters are specified at 24V, 3.8A, 24Vdc input voltage, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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