ABB RELION REX640 Technical Manual page 1156

Protection functions
Name Type
U_ANGL_RES FLOAT32
U_AMPL_N FLOAT32
U_ANGL_N FLOAT32
U_UNB_AMPL FLOAT32
U_UNB_ANGL FLOAT32
U_OPR FLOAT32
CNUPTOV Enum
4.12.5.11 Technical data
Table 1102: CNUPTOV Technical data
Characteristic
Operation accuracy
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy
Suppression of harmonics
1
Start value = 0.1 × U
earth with nominal frequency injected from random phase angle, results based on statistical
distribution of 1000 measurements
2
Measured with static signal output (SSO)
1156
Values (Range)
-180.00...180.00
0.00...5.00
-180.00...180.00
0.00...5.00
-180.00...180.00
0.00...5.00
1=on
2=blocked
3=test
4=test/blocked
5=off
1, 2
U = 1.1 × set
Fault
value
, Voltage before fault = 0.9 × U
n
Unit
deg
xUn
deg
xUn
deg
xUn
Value
Depending on the frequency of the measured
voltage: f ±2 Hz
n
±1.5 % of the set value or ±0.002 × U
Start
Typically 75 ms
Typically 40 ms
Typically 0.96
<35 ms
±1.0 % of the set value or ±20 ms
DFT: -50 dB at f = n × f
, f = 50 Hz, overvoltage in one phase-to-
n n
1MRS759142 F
Description
Angle of capacitor ter-
minal open delta volt-
age (either calculated
or derived)
Magnitude of capacitor
neutral zero sequence
voltage
Angle of capacitor neu-
tral zero sequence volt-
age
Magnitude of recorded
natural unbalance com-
pensation component
voltage
Angle of recorded nat-
ural unbalance compen-
sation component volt-
age
Calculated operating
voltage
Status
n
, where n = 2, 3, 4, 5,...
n
REX640
Technical Manual