ABB RELION REX640 Technical Manual page 1468

Measurement functions
Name Type
HIGH_WARN BOOLEAN
U_INST_RES FLOAT32
U_ANGL_RES FLOAT32
U_DB_RES FLOAT32
U_DMD_RES FLOAT32
U_RANGE_RES Enum
8.1.9.8 Technical data
Table 1407: RESVMMXU Technical data
Characteristic
Operation accuracy
Suppression of harmonics
8.1.10 Frequency measurement FMMXU (ANSI f)
8.1.10.1 Identification
Function description
Frequency measurement
8.1.10.2 Function block
Figure 812: Function block
1468
Values (Range) Unit
0=False
1=True
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
Value
Depending on the frequency of the measured
voltage: f/f
±0.5 % or ±0.002 × U
DFT: -50 dB at f = n × f
RMS: No suppression
IEC 61850
identification
FMMXU
1MRS759142 F
Description
High warning
Residual voltage Ampli-
tude, magnitude of in-
stantaneous value
Residual voltage angle
Residual voltage Ampli-
tude, magnitude of
deadband value
Demand value of resid-
ual voltage
Residual voltage Ampli-
tude range
= ±2 Hz
n
n
, where n = 2, 3, 4, 5,...
n
IEC 60617 ANSI/IEEE C37.2
identification device number
f f
Technical Manual
REX640