ABB REF 541 Product Manual page 59

Feeder Terminal
MF
Fig. 12 An REF 54_ feeder terminal and an REA arc monitoring system (main single-line diagram presen-
tation) used for the protection, control, measurement and supervision functions of a utility/industrial
ring/meshed network cable feeder. The earthing of the supplying network can be of low or high
impedance type.
REF 541, REF 543, REF 545.
3I> 67
I > 67N
0
3
49F
SYNC 25
f < 81U
3U > 59
3U < 27
CBFP * /62
REF 54_
3I >
&
REA 101
1MRS750443-MBG
000
MCS
TCS
CBCM
0 I
R
P 3I
Q
3U
pf
f
E
EXFDR3
59