ABB RELION REX640 Technical Manual page 884

Protection functions
4.5.6.9 PSPTUV Monitored data
Table 838: PSPTUV Monitored data
Name Type
START_DUR FLOAT32
PSPTUV Enum
4.5.6.10 Technical data
Table 839: PSPTUV Technical data
Characteristic
Operation accuracy
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite
time mode
Suppression of harmonics
4.5.7 Overexcitation protection OEPVPH (ANSI 24)
4.5.7.1 Identification
Function description
Overexcitation protection
1
Start value = 1.0 × U
sequence undervoltage with nominal frequency injected from random phase angle, results based
on statistical distribution of 1000 measurements
2
Includes the delay of the signal output contact
884
Values (Range)
0.00...100.00
1=on
2=blocked
3=test
4=test/blocked
5=off
1, 2
U = 0.99 × set
Fault
Start value
U = 0.9 × set
Fault
Start value
, positive-sequence voltage before fault = 1.1 × U
n
Unit
%
Value
Depending on the frequency of the measured voltage:
f ±2 Hz
n
±1.5% of the set value or ±0.002 × U
Minimum Typical
52 ms 55 ms
44 ms 47 ms
Typically 40 ms
Relative hysteresis
Depends on the set
<35 ms
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
IEC 61850 IEC 60617
identification identification
OEPVPH U/f>
n
1MRS759142 F
Description
Ratio of start time / op-
erate time
Status
n
Maximum
58 ms
50 ms
ANSI/IEEE C37.2
device number
24
, f = 50 Hz, positive
n
REX640
Technical Manual