Woodward HighPROTEC - Page 651

Protective Elements
Parameter Description Setting range Default Menu path
Stab H5 Stabilisation of differential protection
function against stationary or transient
components of the 5th harmonic at the
phase current (e.g. transformer
overexcitation).
inactive,
active
inactive [Protection
Para
/<1..4>
/Diff-Prot
/Id]
H5 Sta Threshold (5thd harmonic - basic wave
ratio) for stabilising the differential
protection function against stationary 5th
harmonic.
Only available if: Stab H5 = active
10 - 60% 30% [Protection
Para
/<1..4>
/Diff-Prot
/Id]
H5 Tra Threshold (5th harmonic - basic wave ratio)
for temporary restraining of the differential
protection function against transient 5th
harmonic.
Only available if: Stab H5 = active
10 - 60% 15% [Protection
Para
/<1..4>
/Diff-Prot
/Id]
t-Trans Time of temporary stabilisation of the
differential protection function when
thresholds for „H2 Tra“ and „H5 Tra“
(transient harmonic) are exceeded.
0.05 - 120.00s 2s [Protection
Para
/<1..4>
/Diff-Prot
/Id]
Crossbl Active = Phase overlapping stabilisation of
the differential protection function. Inactive
= Phase selective stabilisation of the
differential protection function.
inactive,
active
inactive [Protection
Para
/<1..4>
/Diff-Prot
/Id]
CT Satur Monit Current Transformer Saturation Supervision inactive,
active
active [Protection
Para
/<1..4>
/Diff-Prot
/Id]
CT Satur
Sensitvn
Sensitiveness of the Current Transformer
Satusation Supervision. The higher the
value, the lower the sensitiveness.
Only available if: VRestraint = active
100 - 500% 100% [Protection
Para
/<1..4>
/Diff-Prot
/Id]
651 MCDGV4 DOK-HB-MCDGV4-2E