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9.5.5
Settings
Table 180:
STEFPHIZ (59THD) Group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Operation
Disabled
Enabled
-
-
Disabled
Disable/Enable Operation
Beta
0.50 - 10.00
-
0.01
3.00
Portion of 3rd harm voltage in neutral point
used as bias
CBexists
No
Yes
-
-
No
Defines if generator CB exists (between Gen &
Transformer)
FactorCBopen
1.00 - 10.00
-
0.01
1.00
Beta is multiplied by this factor when CB is
open
VN3rdHPU
0.5 - 10.0
%
0.1
2.0
Pickup 3rd Harm V< protection (when
activated) % of VB/1,732
VT3BlkLevel
0.1 - 10.0
%
0.1
1.0
If VT3 is below limit 3rdH Diff is blocked, in % of
VB/1,732
VNFundPU
1.0 - 50.0
%
0.1
5.0
Pickup fundamental VN> protection (95%
SEF), % of VB/1,732
t3rdH
0.020 - 60.000
s
0.001
1.000
Operation delay of 3rd harm-based protection
(100% SEF) in s
tVNFund
0.020 - 60.000
s
0.001
0.500
Operation delay of fundamental VN>
protection (95% SEF) in s
Table 181:
STEFPHIZ (59THD) 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
TVoltType
NoVoltage
ResidualVoltage
AllThreePhases
PhaseA
PhaseB
PhaseC
-
-
ResidualVoltage
Used connection type for gen. terminal voltage
transformer
Section 9
1MRK 502 048-UUS A
Voltage protection
312
Technical manual
Summary of Contents for 650 series
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