ABB RELION REX640, Техническое руководство, Страница: 884 / 1960

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