ABB RELION 650 Series Applications Manual page 105

1MRK 505 363-UEN A
by the LDCM. To inform the differential algorithm that the currents are from the low voltage
sides of the transformer,
reserved for local measurement) so that the proper turn ratio and vector group correction can
be done.
Application manual
TraAOnInpCh has to be set to 2 and TraBOnInpCh to 3 (channel1 is
Section 6
Differential protection
99