ABB RELION REX640 - 8.1.9.8 Technical data; 8.1.10 Frequency measurement FMMXU (ANSI f); 8.1.10.1 Identification; 8.1.10.2 Function block

Name Type Values (Range) Unit Description
HIGH_WARN BOOLEAN
0=False
1=True
High warning
U_INST_RES FLOAT32 0.00...4.00 xUn Residual voltage Ampli-
tude, magnitude of in-
stantaneous value
U_ANGL_RES FLOAT32 -180.00...180.00 deg Residual voltage angle
U_DB_RES FLOAT32 0.00...4.00 xUn Residual voltage Ampli-
tude, magnitude of
deadband value
U_DMD_RES FLOAT32 0.00...4.00 xUn Demand value of resid-
ual voltage
U_RANGE_RES Enum
0=normal
1=high
2=low
3=high-high
4=low-low
Residual voltage Ampli-
tude range
8.1.9.8 Technical data
Table 1407: RESVMMXU Technical data
Characteristic Value
Operation accuracy Depending on the frequency of the measured
voltage: f/f
n
= ±2 Hz
±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
8.1.10 Frequency measurement FMMXU (ANSI f)
8.1.10.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Frequency measurement FMMXU f f
8.1.10.2 Function block
Figure 812: Function block
Measurement functions
1MRS759142 F
1468 REX640
Technical Manual