Data Sheet

UB20.241
UB-Series
24V, 20A, DC-UPS
INDEX
Page Page
1.
Terminology and Abbreviations.........................3
2. Intended Use .......................................................4
3. Installation Notes ................................................4
4. Input / Output .....................................................6
5. Batteries and Battery Charging ........................10
6. Buffer Time........................................................12
7. Ready and Buffering Relay Contact .................14
8. Replace Battery Relay Contact..........................14
9. Inhibit Input.......................................................14
10. Efficiency and Power Losses..............................15
11. Lifetime Expectancy and MTBF.........................15
12. Functional Diagram...........................................16
13. Terminals and Wiring........................................16
14. Front Side and User Elements...........................17
15. EMC....................................................................19
16. Environment......................................................20
17. Protection Features ...........................................21
18. Safety Features ..................................................21
19. Dielectric Strength ............................................22
20. Approvals.......................................................... 22
21. Physical Dimensions and Weight..................... 23
22. Accessories ........................................................ 24
22.1. ZM2.WALL – Wall-Mounting Bracket ......24
22.2. ZM12.SIDE – Wall-Mounting Bracket ......24
22.3. UZS24.100 – Sensor Board for DC-UPS.....24
22.4. UZK24.071 – 24V, 7AH Battery Module...25
22.5. UZK24.121 – 24V, 12AH Battery Module.25
23. Application Notes............................................. 26
23.1. Battery Replacement Intervals .................26
23.2. External Input Protection.........................28
23.3. Output Circuit Breakers............................28
23.4. Back-feeding Loads ..................................28
23.5. Parallel Use to Increase Output Current..29
23.6. Parallel Use for Redundancy ....................29
23.7. Series Use for 48V Applications ...............30
23.8. Using the Inhibit-Input.............................30
23.9. Troubleshooting .......................................31
The information presented in this document is believed to be accurate and reliable and may change without notice.
No part of this document may be reproduced or utilized in any form without permission in writing from the publisher.
Feb. 2016 / Rev. 2.1 DS-UB20.241-EN
All parameters are specified at 24V, 20A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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