ABB RELION 620 Series Technical Manual page 952

Section 8
Measurement functions
8.1.6.5
8.1.6.6
946
Monitored data
Table 910: VAMMXU Monitored data
Name Type
U12-kV FLOAT32
UL1-kV FLOAT32
U_INST_AB FLOAT32
U_ANGL_AB FLOAT32
U_DB_AB FLOAT32
U_DMD_AB FLOAT32
U_RANGE_AB Enum
U_INST_A FLOAT32
U_ANGL_A FLOAT32
U_DB_A FLOAT32
U_DMD_A FLOAT32
U_RANGE_A Enum
Technical data
Table 911: VAMMXU Technical data
Characteristic
Operation accuracy
Suppression of harmonics
Values (Range) Unit
0.00...4.00 xUn
0.00...5.00 xUn
0.00...4.00 xUn
-180.00...180.00 deg
0.00...4.00 xUn
0.00...4.00 xUn
0=normal
1=high
2=low
3=high-high
4=low-low
0.00...5.00 xUn
-180.00...180.00 deg
0.00...5.00 xUn
0.00...5.00 xUn
0=normal
1=high
2=low
3=high-high
4=low-low
Value
Depending on the frequency of the voltage
measured: f ±2 Hz
n
At voltages in range 0.01...1.15 × U
±0.5% or ±0.002 × U
DFT: -50 dB at f = n × f
RMS: No suppression
1MRS757644 F
Description
Measured phase to
phase voltage amplitude
phase AB
Measured phase to
ground voltage amplitude
phase A
U12 Amplitude,
magnitude of
instantaneous value
U12 angle
U12 Amplitude,
magnitude of reported
value
Demand value of U12
voltage
U12 Amplitude range
UL1 Amplitude,
magnitude of
instantaneous value
UL1 angle
UL1 Amplitude,
magnitude of reported
value
Demand value of UL1
voltage
UL1 Amplitude range
n
n
, where n = 2, 3, 4, 5,...
n
620 series
Technical Manual