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REJ 523
Technical Reference Manual
ABB Substation Automation
Products and Systems
MRS750940-MUM
12
4.1.2 Configuration
The figure below illustrates how the start, trip and binary input signals can be
configured so that the required protection functions are obtained.
17 18
X2.1
13 14 15
10 11 12
7 8 9
3 4
5 6
SDiag523
3I>
3I>>
4
5
IL1
IL2
IL3
6
4
4
4
3
3
3
3
2
2
2
2
1
1
1
1
I/O
1
2
3
BI
PO1
PO2
SO1
IRF
SO2
SGF1-3
IRF
START
TRIP
START
TRIP
SGR1
SGR2
SGR3
SGR4
SGB1
SGB1
SGB1
SGB1
SGB1
Blocking of stage I>>
Blocking of stage I>
INDICATORS RESET
RELAYS RESET
MEMORIZED VALUES
RESET
Figure 4.1.2-1 Signal diagram of the overcurrent relay
The functions of the blocking and start signals are selected with the switches of
switchgroups SGF, SGB and SGR. The checksums of the switchgroups are found in
the menu group “Settings” of the protection relay. The functions of these switches are
explained in detail in the corresponding SG_ -tables.
Summary of Contents for REJ 523
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