ABB REX 521 - Page 227

1MRS751802-MUM
REX 521
227
Protection Relay
Technical Reference Manual, Standard Configurations
Fig. 11.6.1.-2 Connection overview diagram of the measurement cubicle
REX 521
DC
ES
100V
Uo
A
N
Internal relay fault
100V
U12
100V
U23
100V
U31
VT1
CT1
VT2 VT3
VT4
Iob
Io
IL1
IL2
IL3
CT2
CT3
CT4
CT5
5A 1A
5A 1A
5A 1A 5A 1A
1A 0.2A
L1
L3 L2
27
25
24
22
21
19
18
16
15
13
14
12
10
11
9
7
8
6
4
5
3
1
2
X1.1
X4.2
5
6
7
8
9
10
12
11
14
13
16
15
18
17
X3.1
2
1
X4.1
2
1
4
5
3
7
8
6
11
10
9
13
12
14
17
15
18
X4.2
3
4
1
2
DI1
DI2 DI3
DI4
DI5 DI6
DI7 DI8 DI9
IRF
S01
S02 P01
P02 P03 HSPO1
TCS1
Mains
ACFail
TempAlarm
f<
81U
3U< 27
3U>
59
59N
U >
0
TCS
0
I
MCS
000
R
3U~harm
f
3U
U
0
TRIP3 to all outgoing feeders
Uo>>>,Uo>>, U<, U<<, U>, U>> and f<<
TRIP1 to the incoming feeder
Uo>>>,Uo>>
TRIP2 to the load shedding group 1
f<
Earth-fault alarm Uo>
OverviewMeasH06