Table 35: EF4PTOC (51N_67N) Output signals
Name Type Description
TRIP BOOLEAN Common trip signal
TRST1 BOOLEAN Trip signal from step 1
TRST2 BOOLEAN Trip signal from step 2
TRST3 BOOLEAN Trip signal from step 3
TRST4 BOOLEAN Trip signal from step 4
PICKUP BOOLEAN General pickup signal
PU_ST1 BOOLEAN Pickup signal step 1
PU_ST2 BOOLEAN Pickup signal step 2
PU_ST3 BOOLEAN Pickup signal step 3
PU_ST4 BOOLEAN Pickup signal step 4
PUFW BOOLEAN Forward directional pickup signal
PUREV BOOLEAN Reverse directional pickup signal
2NDHARMD BOOLEAN 2nd harmonic block signal
7.2.5 Settings
Table 36: EF4PTOC (51N_67N) Group settings (basic)
Name
Values (Range) Unit Step Default Description
Operation Disabled
Enabled
- - Disabled Operation Disable / Enable
EnaDir Disable
Enable
- - Enable Enabling the Directional calculation
AngleRCA -180 - 180 Deg 1 65 Relay characteristic angle (RCA)
polMethod Voltage
Current
Dual
- - Voltage Type of polarization
VPolMin 1 - 100 %VB 1 1 Minimum voltage level for polarization (UN or
U2) in % of UBase
IPolMin 2 - 100 %IB 1 5 Minimum current level for polarization (IN or
I2) in % of IBase
RPol 0.50 - 1000.00 ohm 0.01 5.00 Real part of source Z to be used for current
polarisation
XPol 0.50 - 3000.00 ohm 0.01 40.00 Imaginary part of source Z to be used for
current polarisation
I>Dir 1 - 100 %IB 1 10 Current level (IN or I2) for direction release in
% of IBase
2ndHarmStab 5 - 100 % 1 20 Second harmonic restrain operation in % of
IN magnitude
Table continues on next page
1MRK 505 277-UUS C Section 7
Current protection
85
Technical Manual
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