
Contents
1. Description..................................................................... 3
2. Application configurations...............................................3
3. Communication.............................................................. 5
4. Application..................................................................... 6
5. Process bus................................................................... 9
6. Self-supervision.............................................................. 9
7. Secondary circuit supervision......................................... 9
8. Access control............................................................... 9
9. Inputs and outputs......................................................... 9
10. Remote control and trip...............................................10
11. Technical data.............................................................11
12. Mounting methods...................................................... 21
13. Merging unit case and plug-in unit...............................22
14. Selection and ordering data.........................................22
15. Accessories and ordering data.................................... 22
16. Tools...........................................................................22
17. Cyber security............................................................. 23
18. Terminal diagrams.......................................................24
19. References..................................................................28
20. Functions, codes and symbols.................................... 29
21. Document revision history........................................... 31
Disclaimer
The information in this document is subject to change without notice and should not be construed as a commitment by ABB. ABB assumes no responsibility for any errors
that may appear in this document.
© Copyright 2019 ABB.
All rights reserved.
Trademarks
ABB and Relion are registered trademarks of the ABB Group. All other brand or product names mentioned in this document may be trademarks or registered trademarks
of their respective holders.
Substation Merging Unit
1MRS758420 B
SMU615
Product version: 1.0
2
ABB