ABB RELION REX640, Техническое руководство, Страница: 1156 / 1960

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