Feeder With Differential Protection - ABB REF 542plus Technical Reference Manual

REF 542plus REF 542plus
8.3.2.
66
Multifunction Protection and Switchbay Control
Unit
Technical Reference Manual
Fig. 8.3.1.-1 Generic outgoing feeder

Feeder with differential protection

The schematic diagram below shows the connection for a power transformer feeder
with differential, earth-fault and restricted earth fault protection.
The used analog input board has 8 inputs for currents. The first 6 channels are used
for the differential protection; channel 7 is used for the restricted earth fault
protection and channel 8 for the earth protection.
1MRS755859
A070120