ABB RELION REX640 Technical Manual page 1462

Measurement functions
Name Type
U_INST_A FLOAT32
U_ANGL_A FLOAT32
U_DMD_A FLOAT32
U_INST_B FLOAT32
U_ANGL_B FLOAT32
U_DMD_B FLOAT32
U_INST_C FLOAT32
U_ANGL_C FLOAT32
U_DMD_C FLOAT32
8.1.7.8 Technical data
Table 1392: VAMMXU Technical data
Characteristic
Operation accuracy
Suppression of harmonics
8.1.8 Residual current measurement RESCMMXU (ANSI IG)
8.1.8.1 Identification
Function description
Residual current measurement
8.1.8.2 Function block
Figure 810: Function block
1462
Values (Range) Unit
0.00...5.00 xUn
-180.00...180.00 deg
0.00...5.00 xUn
0.00...5.00 xUn
-180.00...180.00 deg
0.00...5.00 xUn
0.00...5.00 xUn
-180.00...180.00 deg
0.00...5.00 xUn
Value
Depending on the frequency of the voltage
measured: f
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
IEC 61850
identification
RESCMMXU
1MRS759142 F
Description
UL1 amplitude, magni-
tude of instantaneous
value
UL1 angle
Demand value of UL1
voltage
UL2 amplitude, magni-
tude of instantaneous
value
UL2 angle
Demand value of UL2
voltage
UL3 amplitude, magni-
tude of instantaneous
value
UL3 angle
Demand value of UL3
voltage
±2 Hz
n
n
, where n = 2, 3, 4, 5,...
n
IEC 60617 ANSI/IEEE C37.2
identification device number
Io IG
Technical Manual
n
REX640