ABB RELION REX640 - 8.1.7.8 Technical data; 8.1.8 Residual current measurement RESCMMXU (ANSI IG); 8.1.8.1 Identification; 8.1.8.2 Function block

Name Type Values (Range) Unit Description
U_INST_A FLOAT32 0.00...5.00 xUn UL1 amplitude, magni-
tude of instantaneous
value
U_ANGL_A FLOAT32 -180.00...180.00 deg UL1 angle
U_DMD_A FLOAT32 0.00...5.00 xUn Demand value of UL1
voltage
U_INST_B FLOAT32 0.00...5.00 xUn UL2 amplitude, magni-
tude of instantaneous
value
U_ANGL_B FLOAT32 -180.00...180.00 deg UL2 angle
U_DMD_B FLOAT32 0.00...5.00 xUn Demand value of UL2
voltage
U_INST_C FLOAT32 0.00...5.00 xUn UL3 amplitude, magni-
tude of instantaneous
value
U_ANGL_C FLOAT32 -180.00...180.00 deg UL3 angle
U_DMD_C FLOAT32 0.00...5.00 xUn Demand value of UL3
voltage
8.1.7.8 Technical data
Table 1392: VAMMXU Technical data
Characteristic Value
Operation accuracy
Depending on the frequency of the voltage
measured: f
n
±2 Hz
At voltages in range 0.01…1.15 × U
n
±0.5 % or ±0.002 × U
n
Suppression of harmonics
DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
RMS: No suppression
8.1.8 Residual current measurement RESCMMXU (ANSI IG)
8.1.8.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Residual current measurement RESCMMXU Io IG
8.1.8.2 Function block
Figure 810: Function block
Measurement functions
1MRS759142 F
1462 REX640
Technical Manual