ABB REF 542plus Technical Reference Manual

6.3. Configuration restriction ............................................ 44
6.4. Binary inputs and outputs.......................................... 45
6.4.1. BIO module with mechanical output relays
(version3) ................................................... 45
6.4.2. BIO module with static outputs....................... 46
6.5. Interfaces ............................................................... 47
6.6. Power supply .......................................................... 48
6.7. Environmental conditions .......................................... 49
6.8. Protection degree .................................................... 49
6.9. Tests ..................................................................... 49
7. Ordering................................................................. 51
8. Connections ........................................................... 59
8.1. Connector plates ..................................................... 59
8.2. Binary input and output connections ........................... 63
8.3. Typical connection schemes ...................................... 65
8.3.1. Generic outgoing feeder................................ 65
8.3.2. Feeder with differential protection ................... 66
8.3.3. Incoming feeder with synchrocheck................. 67
9. Abbreviations ......................................................... 69
4
REF 542plusREF 542plus
Multifunction Protection and Switchbay Control
Unit
Technical Reference Manual
1MRS755859

ABB REF 542plus Specifications

General

Brand	ABB
Model	REF 542plus
Category	Control Unit
Language	English