9.6.5
Settings
Table 300:
STEFPHIZ Group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Operation
Off
On
-
-
Off
Operation Off / On
Beta
0.50 - 10.00
-
0.01
3.00
Portion of voltN3rdHarmonic 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
UN3rdH<
0.5 - 10.0
%
0.1
2.0
Pickup 3rd Harm U< protection (when
activated) % of UB/1,732
UT3BlkLevel
0.1 - 10.0
%
0.1
1.0
If UT3 is below limit 3rdH Diff is blocked, in
% of UB/1,732
UNFund>
1.0 - 50.0
%
0.1
5.0
Pickup fundamental UN> protection (95%
SEF), % of UB/1,732
t3rdH
0.020 - 60.000
s
0.001
1.000
Operation delay of 3rd harm-based
protection (100% SEF) in s
tUNFund
0.020 - 60.000
s
0.001
0.500
Operation delay of fundamental UN>
protection (95% SEF) in s
Table 301:
STEFPHIZ Non group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
TVoltType
NoVoltage
ResidualVoltage
AllThreePhases
PhaseL1
PhaseL2
PhaseL3
-
-
ResidualVoltage
Used connection type for gen. terminal
voltage transformer
GlobalBaseSel
1 - 12
-
1
1
Selection of one of the Global Base Value
groups
9.6.6
Monitored data
Table 302:
STEFPHIZ Monitored data
Name
Type
Values (Range)
Unit
Description
UT3
REAL
-
kV
Mag. of 3rd harm. voltage
at generator terminal
side, Volts
UN3
REAL
-
kV
Mag. of 3rd harm. voltage
at generator neutral side,
Volts
E3
REAL
-
kV
Total induced stator 3rd
harmonic voltage,
primary Volts
Table continues on next page
1MRK502052-UEN B
Section 9
Voltage protection
535
Technical manual
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