ABB RELION REX640 - 4.7.2.10 Technical data; 4.7.3 Three-phase underexcitation protection UEXPDIS (ANSI 40); 4.7.3.1 Identification; 4.7.3.2 Function block

4.7.2.9 OOSRPSB Monitored data
Table 943: OOSRPSB Monitored data
Name Type Values (Range) Unit Description
Z1_AMPL FLOAT32 0.00...99999.00 ohm Positive sequence im-
pedance amplitude
Z1_ANGLE FLOAT32 -180...180 deg Positive sequence im-
pedance phase angle
SLIP_CNT_Z1 INT32 0...9999 Zone 1 slip counter
SLIP_CNT_Z2 INT32 0...9999 Zone 2 slip counter
SLIP_CNT_Z3 INT32 0...9999 Zone 3 slip counter
OOSRPSB Enum
1=on
2=blocked
3=test
4=test/blocked
5=off
Status
4.7.2.10 Technical data
Table 944: OOSRPSB Technical data
Characteristic Value
Impedance reach Depending on the frequency of the meas-
ured current and voltage: f
n
±2 Hz
±3.0% of the reach value or ±0.2% of U
n
/(√3
× I
n
)
Reset time ±1.0% of the set value or ±40 ms
Operate time accuracy ±1.0% of the set value or ±20 ms
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5...
4.7.3 Three-phase underexcitation protection UEXPDIS (ANSI
40)
4.7.3.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Three-phase underexcitation pro-
tection
UEXPDIS X< 40
1MRS759142 F Protection functions
REX640
Technical Manual
1015