Parameter Values (Range) Unit Step Default Description
Ng Seq V deadband 100...100000 10000 Deadband configuration value for
negative sequence voltage for integral
calculation. (percentage of difference
between min and max as 0,001 % s)
Zro V Hi high Lim 0.00...4.00 xUn 0.20 High alarm voltage limit for zero
sequence voltage
Zro V High limit 0.00...4.00 xUn 0.05 High warning voltage limit for zero
sequence voltage
Zro V low limit 0.00...4.00 xUn 0.00 Low warning voltage limit for zero
sequence voltage
Zro V low low Lim 0.00...4.00 xUn 0.00 Low alarm voltage limit for zero
sequence voltage
Zro V deadband 100...100000 10000 Deadband configuration value for zero
sequence voltage for integral calculation.
(percentage of difference between min
and max as 0,001 % s)
8.1.10.5 Monitored data
Table 568: VSMSQI Monitored data
Name
Type Values (Range) Unit Description
NgSeq-kV FLOAT32 0.00...4.00 xUn Measured negative
sequence voltage
PsSeq-kV FLOAT32 0.00...4.00 xUn Measured positive
sequence voltage
ZroSeq-kV FLOAT32 0.00...4.00 xUn Measured zero
sequence voltage
8.1.10.6 Technical data
Table 569: VSMSQI 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 x U
n
±1.0% or ±0.002 x U
n
Suppression of harmonics DFT: -50 dB at f = n x f
n
, where n = 2, 3, 4, 5,…
Section 8 1YHT530004D05 D
Measurement functions
646 615 series
Technical Manual
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