ABB REF542plus - Viewing and Changing Protection Settings; Viewing Protection Settings; Changing Protection Key Mode

REF 542plus switchbay protection and control unit
Manual Part 3: Installation and Commissioning
1VTA100004-en DMS,2001-10-04 REF542plus: Installation and Commissioning 29 / 80
Figure 11: Example of connection diagram for the transformer differential protection with sensors