Data Sheet
Table Of Contents
- 1. Intended Use
- 2. Installation Instructions
- 3. AC-Input
- 4. DC-Input
- 5. Input Inrush Current
- 6. Output
- 7. Hold-up Time
- 8. Efficiency and Power Losses
- 9. Functional Diagram
- 10. Front Side and User Elements
- 11. Connection Terminals
- 12. Lifetime Expectancy
- 13. MTBF
- 14. EMC
- 15. Environment
- 16. Safety and Protection Features
- 17. Dielectric Strength
- 18. Approved, Fulfilled or Tested Standards
- 19. Regulatory Product Compliance
- 20. Physical Dimensions and Weight
- 21. Accessories
- 21.1. ZM1.WALL - Wall/Panel Mount Bracket
- 21.2. ZM12.SIDE - Side Mount Bracket
- 21.3. YRM2.DIODE - Redundancy Modules
- 21.4. YR20.246 - Redundancy Module
- 22. Application Notes
- 22.1. Peak Current Capability
- 22.2. Charging of Batteries
- 22.3. Series Operation
- 22.4. Parallel Use to Increase Output Power
- 22.5. Parallel Use for Redundancy
- 22.6. Use in a Tightly Sealed Enclosure
- 22.7. Mounting Orientations
CT5.241
CT-Series
3-PHASE, 24V, 5A, 120W
Aug. 2021 / Rev. 2.1 DS-CT5.241-EN All values are typical figures specified at 400Vac, 50Hz input voltage, 24V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
24/28
22.2. CHARGING OF BATTERIES
The power supply can be used to charge lead-acid or maintenance free batteries. Two 12V SLA or VRLA batteries are
needed in series connection.
Instructions for charging batteries:
a) Ensure that the ambient temperature of the power supply stays below 45°C.
b) Set the output voltage, measured at no load and at the battery end of the cable, very precisely to the end-of-
charge voltage.
End-of-charge voltage 27.8V 27.5V 27.15V 26.8V
Battery temperature 10°C 20°C 30°C 40°C
c) Use a 10A circuit breaker or a blocking diode between the power supply and the battery.
d) Ensure that the output current of the power supply is below the allowed charging current of the battery.
e) Use only matched batteries when putting 12V types in series.
f) The return current to the power supply is typically 5.5mA. This return current can discharge the battery when the
power supply is switched off except in case a blocking diode is utilized.