Name Values (Range) Unit Step Default Description
tUN 0.000 - 60.000 s 0.001 0.100 Time delay for non-directional residual
overvoltage
INRel> 0.25 - 200.00 %IB 0.01 1.00 Residual release current for all directional
modes, in % of IBase
UNRel> 1.00 - 300.00 %VB 0.01 3.00 Residual release volt for all dir modes, % of
VBase
Table 52: SDEPSDE (67N) Non group settings (basic)
Name Values (Range) Unit Step Default Description
GlobalBaseSel 1 - 6 - 1 1 Selection of one of the Global Base Value
groups
6.5.6 Monitored data
Table 53: SDEPSDE (67N) Monitored data
Name Type Values (Range) Unit Description
INCOSPHI REAL - A Mag of residual current along
polarizing qty 3I0cos(Fi-RCA)
IN REAL - A Measured magnitude of the
residual current 3I0
UN REAL - kV Measured magnitude of the
residual voltage 3V0
SN REAL - MVA Measured magnitude of
residual power 3I03V0cos(Fi-
RCA)
ANG FI-RCA
REAL - deg Angle between 3V0 and 3I0
minus RCA (Fi-RCA)
6.5.7 Operation principle
6.5.7.1 Function inputs
The function is using phasors of the residual current and voltage. Group signals I3P and
V3P containing phasors of residual current and voltage is taken from pre-processor
blocks.
The sensitive directional ground fault protection has the following sub-functions
included:
1MRK 511 287-UUS A Section 6
Current protection
119
Technical manual
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