GE P4A, Technical Manual, Page: 735 / 850

P54A/B/C/E Appendix B - Settings and Signals
P54xMED-TM-EN-1 B169
MENU TEXT COL ROW DEFAULT SETTING AVAILABLE OPTIONS
DESCRIPTION
Zero sequence impedance angle of the section between J3 and J4
Y1 J3-J4 30 44 0.00000001*I1
From 0.00000001*I1 to 10*I1 in steps of
0.00000001*I1
[Courier Number (inverse ohms)]
Positive sequence admittance amplitude of the section between junction J3 and J4
Y0 J3-J4 30 45 0.00000001*I1
From 0.00000001*I1 to 10*I1 in steps of
0.00000001*I1
[Courier Number (inverse ohms)]
Zero sequence admittance amplitude of the section between junction J3 and J4
GROUP 1: CURRENT
DIFF
33 00
This column contains settings for Current Differential
Phase Diff 33 01 Enabled
Disabled
Enabled
[Indexed String]
To enable (activate) or disable (turn off) the Differential protection function in the group.
Phase Is1 33 70 0.2*I1
From 0.1*l1 to 2*l1 in steps of 0.05*I1
[Courier Number (current)]
Defines the minimum pick-up level of the IED.
Phase Is2 33 71 2*I1
From 1*I1 to 30*I1 in steps of 0.05*I1
[Courier Number (current)]
Defines the bias current threshold, above which the higher percentage bias k2 is used
Phase K1 33 72 30
From 0 to 150 in steps of 5
[Courier Number (percentage)]
The lower percentage bias setting used when the bias current is below Is2. This provides stability for small CT mismatches, whilst ensuring
good sensitivity to resistive faults under heavy load conditions.
Phase K2 33 73 150
From 30 to 150 in steps of 5
[Courier Number (percentage)]
The higher percentage bias setting used to improve IED stability under heavy through fault current conditions.
Phase K2 33 74 100
From 30 to 150 in steps of 5
[Courier Number (percentage)]
The higher percentage bias setting used to improve IED stability under heavy through fault current conditions.
Ktransient 33 75 200
From 100 to 200 in steps of 5
[Courier Number (percentage)]
This will replace the values of k1 & k2 while the circuit breaker is changing state from open to close. The characteristic will only be used for 5
power cycles
Is1 Restrain 33 76 4
From 0 to 5 in steps of 0.01
[Courier Number (current)]
Value added to the Is1 threshold when a trasient condition is detected
Phase Time Delay 33 78 0
From 0 to 100 in steps of 0.01
[Courier Number (time-seconds)]
Setting for the time-delay for the definite time setting if selected. The setting is visible only when DT function is selected.
PIT Time 33 7B 0.2
From 0 to 0.2 in steps of 0.005
[Courier Number (time-seconds)]
This timer is initiated upon receipt of PIT flag in the message. Once this timer elapses, and as long as the current is above of Is1 setting, the
IED closes its three phase differential trip contacts.
Ph CT Corr'tion 33 7C 1
From 1 to 8 in steps of 0.01
[Courier Number (decimal)]
Setting used to compensate CT ratios mismatch between terminals.
IbiasThreshold 33 81 4
From 0.001*I1 to 10*I1 in steps of 0.01*I1
[Courier Number (current)]
Current threshold for CT saturation module
Capacitor Comp. 33 82 Disabled
Disabled
Enabled
[Indexed String]
Enable or disable capacitor compensation.
Ph Diff Stub Bus 33 83 Disabled
Disabled
Enabled
[Indexed String]
Enable/Disable of Stub Bus Protection.