Configuration; Protection; Block Diagram - ABB REJ 527 Technical Reference Manual

1MRS 750616-MUM
4.1.3.
4.1.4.
4.1.4.1.
Directional or Non-Directional Earth-Fault Relay
Technical Reference Manual

Configuration

The figure below illustrates how the start, trip and binary input signals can be
configured to obtain the required protection functionality.
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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
under "SETTINGS" in the HMI menu. The functions of these switches are explained
in detail in the corresponding SG_ -tables.

Protection

Block diagram

Uob
0.50% x Un
j /
j
0.48% x In
j
Io
BI
SGB1/1
CLEAR INDICATIONS
SGB1/2
CLEAR INDICATIONS AND MEMORIZED VALUES
SGB1/3
CLEAR INDICATIONS AND MEMORIZED VALUES; UNLATCH OUTPUT CONTACTS
SGB1/4
SETTINGS (Group 1/Group 2)
SGB1/8
BASIC ANGLE CONTROL or Ij characteristic (sin(j) or cos(j))
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Uob>
70 ms
tb>
SGF2/8
Uo>
SGB1/5
SGF3/1
70 ms
Io>
to>,k
SGB1/6
Uo>>
60 ms
SGF3/3 SGF2/3
to>>
SGB1/7
Io>>
SGF2/1
0.12 * Io>
2 * Io>>
60 ms
1.5 * Io>
1.25 * Io>
REJ 527
5 s
C
SGR1/x
SGF1/1
PO1
1
SGR2/x 1
SGR3/x
SGF1/5
0.1 ... 1s
SGR4/x
C
5 s
SGF1/2
PO2
1
SGR5/x
2 1
SO1
3
SGR6/x
SO2
4
Uob> START
1
Io>
Io>>
C
tb> TRIP
1
to>
to>>
C
13