Monitored Data; Technical Data - ABB RELION REX640 Technical Manual

Section 4
Protection functions
Table 761: PSPTUV Non group settings (Advanced)
Parameter
Reset delay time
Relative hysteresis
4.5.6.9
4.5.6.10
800
Values (Range) Unit
0...60000 ms
1.0...5.0 %

Monitored data

Table 762: PSPTUV Monitored data
Name
START_DUR
PSPTUV

Technical data

Table 763: PSPTUV Technical data
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Suppression of harmonics
Start value = 1.0 × U
1)
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
Step Default
1 20
0.1 4.0
Type Values (Range)
FLOAT32 0.00...100.00
Enum 1=on
2=blocked
3=test
4=test/blocked
5=off
U = 0.99 × set Start
Fault
value
Start
U = 0.9 × set
Fault
value
, positive-sequence voltage before fault = 1.1 × U
n
Description
Reset delay time
Relative hysteresis for operation
Unit Description
% Ratio of start time /
operate time
Status
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
, f = 50 Hz, positive sequence
n n
1MRS759142 C
n
Maximum
58 ms
50 ms
REX640
Technical Manual