ABB REF542plus - Connection to PC for Configuration; Optical to RS232 Converter Cable; Downloading Configuration

Multifunction Protection and Switchgear Control unit REF542plus
Manual: Motor Protection with ATEX-Certification
7.2.6 Connection Example of the REF542plus Analog Inputs
Figure 24: Example of connection diagram for incoming or outgoing bays with transformers
1VTA100114-Rev. 04 en PTMV, 19.01.05 Motorprotection 49 / 66
Valid from Version V4D02