ABB REJ 527 Technical Reference Manual page 30

REJ 527
30
Technical Reference Manual
SGR1...SGR6
The start and operate signals of the protection stages are connected to the output
contacts with switches of switchgroups SGR1...SGR6.
The matrix below can be used for help in making the desired selections. The start
and operate signals of the different protection stages are combined with the output
contacts by encircling the desired intersection point. Each intersection point is
marked with a switch number, and the corresponding weighting factor of the switch
is shown on the bottom row of the matrix. The switchgroup checksum is obtained
by adding together horizontally the weighting factors of all the selected switches of
the switchgroup.
PO1
SGR1
Uob> 1
SGR2
1
tb>
SGR3 Io>/
1
Uo>
SGR4
1
to>
Io>>/
SGR5
1
Uo>>
SGR6
1
to>>
Weighting factor 1
Fig. 4.1.3.6.-2 Output signal matrix of the directional earth-fault relay
Table 10: SGR1...SGR6
Switch Function
SGR1/1...4 U > signal to output contacts PO1, PO2, SO1 and SO2
0b
SGR2/1...4 t > signal to output contacts PO1, PO2, SO1 and SO2
b
SGR3/1...4 I >/U > signal to output contacts PO1, PO2, SO1 and SO2
0 0
SGR4/1...4 t > signal to output contacts PO1, PO2, SO1 and SO2
0
SGR5/1...4 I >>/U >> signal to output contacts PO1, PO2, SO1 and SO2
0 0
SGR6/1...4 t >> signal to output contacts PO1, PO2, SO1 and SO2
0
PO2 SO1 Not in use
SO2
2 3 4 5
2 3 4 5
2 3 4 5
2 3 4 5
2 3 4 5
2 3 4 5
2 4 8 16
ABB Substation Automation
Products and Systems
Not in use Not in use
Not in use
Checksum
(factory setting)
∑ SGR1=
6 7 8
(12)
∑ SGR2=
6 7 8
(3)
∑ SGR3=
6 7 8
(12)
∑ SGR4=
6 7 8
(3)
∑ SGR5=
6 7 8
(12)
∑ SGR6=
6 7 8
(3)
32 64 128
Default
1MRS750616-MUM
12
3
12
3
12
3