Signals - ABB RELION REX640 Technical Manual

1MRS759142 C
4.7.2.7
REX640
Technical Manual
B
-R
GUID-9E83BB4F-5171-43D0-9A4D-542E9193C473 V1 EN
Figure 503: Example of out of step detection
The shaded region indicates a fault zone in a distance protection function. For curve
A, the impedance moves into the out of step zone and leaves slowly, indicating the
occurrence of a swing that quickly stabilizes. For curve B, the impedance moves
slowly into the out of step zone and exits the zone indicating that the network is
becoming unstable. For curve C, impedance rapidly moves into, and remains in, the
fault zone indicating an actual fault and not an out of step condition.

Signals

Table 858: OOSRPSB Input signals
Name Type
I3P SIGNAL
U3P SIGNAL
BLOCK BOOLEAN
DISABLE BOOLEAN
Table 859: OOSRPSB Output signals
Name Type
OPERATE BOOLEAN
SWING BOOLEAN
OSB BOOLEAN
OSB_Z2 BOOLEAN
SWING_OP BOOLEAN
X
C
-X
Default Description
- Three-phase currents
- Three-phase voltages
0=False Block signal for activating the blocking mode
0=False Disable input
Description
Out of step operate on zone 1 or zone 2
Swing condition detected
Out of step block for zone 1
Out of step block for zone 2
Out of step operate on zone 3
Section 4
Protection functions
A
R
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