ABB REF 543 - Page 55

Feeder Terminal REF 541, REF 543, REF 545.
1MRS750443-MBG
55
Fig. 8 Protection, control, measurement and supervision functions of a utility infeeder, implemented with
REF 54_ feeder terminals, an REA arc monitoring system and SPACOM differential relay and volt
-
age regulator (main single-line diagram presentation). The neutral point of the MV network sup-
plied by the infeeder is earthed via the Petersen coil.
MF
MF
q
q
p>
EXINFDR3
3I >
&
3I > 50/51
CBFP
* /62
MCS
R
CBCM
TCS
000
0
I
I
0
>
50N/51N
R
000
U
90V
U
3D I >
87T
R
000
CBFP * /62
MCS
R
Q
P
E
CBCM
TCS
000
0
I
3I
3U
U
0
> 59N
3U > 59
CBFP * /62
3I >
50/51
51B
U
0
I
0
M M
q
REF 54_
SPAU 341
SPAD 346C
REA 101
REF 54_
3I~harm
3U~harm