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Generator protection
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1MRK 502 043-UUS B
8.2.5
Table 75:
EF4PTOC (51N_67N) Group settings (basic)
Name
Values (Range)
Operation
Disabled
Enabled
EnaDir
Disable
Enable
AngleRCA
-180 - 180
polMethod
Voltage
Current
Dual
VPolMin
1 - 100
IPolMin
2 - 100
RPol
0.50 - 1000.00
XPol
0.50 - 3000.00
I>Dir
1 - 100
2ndHarmStab
5 - 100
Table continues on next page
Technical Manual
Table 74:
EF4PTOC (51N_67N) Output signals
Name
Type
TRIP
BOOLEAN
TRST1
BOOLEAN
TRST2
BOOLEAN
TRST3
BOOLEAN
TRST4
BOOLEAN
PICKUP
BOOLEAN
PU_ST1
BOOLEAN
PU_ST2
BOOLEAN
PU_ST3
BOOLEAN
PU_ST4
BOOLEAN
PUFW
BOOLEAN
PUREV
BOOLEAN
2NDHARMD
BOOLEAN

Settings

Unit
Step
-
-
-
-
Deg
1
-
-
%VB
1
%IB
1
ohm
0.01
ohm
0.01
%IB
1
%
1
Description
Common trip signal
Trip signal from step 1
Trip signal from step 2
Trip signal from step 3
Trip signal from step 4
General pickup signal
Pickup signal step 1
Pickup signal step 2
Pickup signal step 3
Pickup signal step 4
Forward directional pickup signal
Reverse directional pickup signal
2nd harmonic block signal
Default
Description
Disabled
Operation Disable / Enable
Enable
Enabling the Directional calculation
65
Relay characteristic angle (RCA)
Voltage
Type of polarization
1
Minimum voltage level for polarization (UN or
U2) in % of UBase
5
Minimum current level for polarization (IN or
I2) in % of IBase
5.00
Real part of source Z to be used for current
polarisation
40.00
Imaginary part of source Z to be used for
current polarisation
10
Current level (IN or I2) for direction release in
% of IBase
20
Second harmonic restrain operation in % of
IN magnitude
Section 8
Current protection
179

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