ABB RELION REX640 - 4.7.4.9 UZPDIS Monitored data; 4.7.4.10 Technical data; 4.7.4.11 Technical revision history

Parameter Values (Range) Unit Step Default Description
4=3Phase-to-phase
impedance calcula-
tion
Phase Sel for Z Clc
1=AB
2=BC
3=CA
1=AB Select phase/
phase-phase vol-
tages and currents
for Z calculation.
Table 966: UZPDIS Non group settings (Advanced)
Parameter Values (Range) Unit Step Default Description
Reset delay time 0...60000 ms 10 20 Reset delay time
4.7.4.9 UZPDIS Monitored data
Table 967: UZPDIS Monitored data
Name Type Values (Range) Unit Description
START_DUR FLOAT32 0.00...100.00 % Ratio of start time / op-
erate time (in %)
Z_AMPL_AB FLOAT32 0.00...200.00 xZn Phase-to-phase A-B im-
pedance amplitude
Z_AMPL_BC FLOAT32 0.00...200.00 xZn Phase-to-phase B-C im-
pedance amplitude
Z_AMPL_CA FLOAT32 0.00...200.00 xZn Phase-to-phase C-A im-
pedance amplitude
UZPDIS Enum
1=on
2=blocked
3=test
4=test/blocked
5=off
Status
4.7.4.10 Technical data
Table 968: UZPDIS Technical data
Characteristic Value
Operation accuracy Depending on the frequency of the meas-
ured current and voltage: f
n
±2 Hz
±3.0% of the set value or ±0.2 %Zb
Start time
1, 2
Typically 50 ms
Reset time Typically 40 ms
Reset ratio Typically 1.04
Retardation time <40 ms
Operate time accuracy ±1.0% of the set value or ±20 ms
1
f
n
= 50 Hz, results based on statistical distribution of 1000 measurements
2
Includes the delay of the signal output contact
1MRS759142 F Protection functions
REX640
Technical Manual
1037