ABB REU 523 Technical Reference Manual page 27

1MRS 750942-MUM
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
PO1 PO2
SGR1
U>
1
SGR2
1
t>
SGR3
U>>
1
SGR4
t>> 1
SGR5
U< 1
SGR6
1
t<
SGR7
1
U<<
SGR8
t<< 1
Weighting factor 1
)LJ  2XWSXW VLJQDO PDWUL[
Table 4.1.4.6-7 SGR1...SGR8
Switch Function
SGR1/1...4 U> signal to output contacts PO1, PO2, SO1 and SO2
SGR2/1...4 t> signal to output contacts PO1, PO2, SO1 and SO2
SGR3/1...4 U>> signal to output contacts PO1, PO2, SO1 and SO2
SGR4/1...4 t>> signal to output contacts PO1, PO2, SO1 and SO2
SGR5/1...4 U< signal to output contacts PO1, PO2, SO1 and SO2
SGR6/1...4 t< signal to output contacts PO1, PO2, SO1 and SO2
SGR7/1...4 U<< signal to output contacts PO1, PO2, SO1 and SO2
SGR8/1...4 t<< signal to output contacts PO1, PO2, SO1 and SO2
New trip indication timer
The new trip indication timer can be configured to allow a second trip indication on
the LCD. When several protection stages trip, the first trip indication will be
displayed until the time, as specified by the "NEW TRIP IND." setting value, has
expired. After this, a new trip indication can displace the old one. The basic
protection functions are not affected by the "NEW TRIP IND." setting.
Table 4.1.4.6-8 New trip indication timer
Setting Description
New trip indication New trip indication timer in minutes
No new trip indication allowed until the
previous one has been manually cleared
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 3 4 5
2 3 4 5
2 4 8 16
REU 523
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)
∑ SGR7=
6 7 8
(12)
∑ SGR8=
6 7 8
(3)
32 64 128
Default
setting
12
3
12
3
12
3
12
3
Setting Default
range setting
0...998
999
60
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