ABB RER620, Technical Manual

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Section 7
Measurement functions
RER620 399
Technical Manual
7.1.6.5 Monitored data
Table 354: IG Monitored data
7.1.6.6 Technical data
Table 355: IG Technical data
7.1.7 Ground voltage VG
7.1.7.1 Identification
7.1.7.2 Function block
Figure 213: Function block
7.1.7.3 Signals
Table 356: VG Input signals
Name Type Values (Range) Unit Description
IG-A FLOAT32 0.00...40.00 xIn Measured ground current
IG_INST FLOAT32 0.00...40.00 xIn Ground current Amplitude, magnitude of
instantaneous value
IG_DB FLOAT32 0.00...40.00 xIn Ground current Amplitude, magnitude of reported
value
IG_RANGE Enum 0=normal
1=high
2=low
3=high-high
4=low-low
Ground current Amplitude range
Characteristic Value
Operation accuracy Depending on the frequency of the current
measured: f/f
n
= ±2Hz
±0.5% or ±0.002 x I
n
at currents in the range of 0.01...4.00 x I
n
Suppression of harmonics DFT: -50dB at f = n x f
n
, where n = 2, 3, 4, 5,…
RMS: No suppression
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Ground voltage RESVMMXU U0 VG
Name Type Default Description
VG SIGNAL 0 Ground voltage
BLOCK BOOLEAN 0=False Block signal for all binary outputs