GE P4A Technical Manual page 736

Appendix B - Settings and Signals
MENU TEXT
If Ph Diff Stub Bus is enabled, DDB input signal Stub Bus Enabled is energised and phase current is measured above Ph Is1 Stub Bus setting,
the IED will issue a Stub Bus Trip
Ph Is1 StubBus
The threshold of operation as there is no effective bias when operating in this mode.
Phase Is1 CTS
Setting that defines the minimum pick-up level of the IED when a current transformer supervision CTS is declared
TRIP ON CLOSE
Trip on Close/SOTF Sub Heading
SOTF Status
Setting that enables note (turns on) or disables (turns off) a special protection logic which can apply upon line energization. SOTF = Switch
on to Fault.
Note: SOTF can be enabled in three different manners:
1. Enabled Pole Dead. By using pole dead logic detection logic
2. Enabled ExtPulse. By using an external pulse
3. En Pdead + Pulse. By using both
SOTF Delay
The SOTF Delay is a pick up time delay that starts after opening all 3 poles of a CB. If the CB is then closed after the set time delay has
expired, SOTF protection will be active. SOTF provides enhanced protection for manual closure of the breaker (not for auto-reclosure).
This setting is visible only if Pole Dead or Pdead + Pulse are selected to enable SOTF.
TOR Status
Setting that enables (turns on) or disables (turns off) special protection following
auto-reclosure. When set Enabled, TOR will be activated after the 'TOC Delay' has expired, ready for application when an auto-reclose shot
occurs. TOR = Trip on (auto)Reclose.
TOC Reset Delay
The TOC Reset Delay is a user settable time window during which TOC protection is available. The time window starts timing upon CB closure
and it is common for SOTF and TOR protection. Once this timer expires after a successful (re)closure, all protection reverts to normal.
SOTF Pulse
The SOTF Pulse is a user settable time window during which the SOTF protection is available. This setting is visible only if ExtPulse or Pdead +
Pulse are selected to enable SOTF
TOC Delay
The TOC Delay is a user settable time delay following the CB opening after which the TOR becomes active (enabled). The time must be set in
conjunction with the Dead Time setting of the Auto-reclose so that the setting must not exceed the minimum Dead Time setting since both
timers start instantaneously.
GROUP 1:
OVERCURRENT
This column contains settings for Overcurrent
I>1 Status
Setting that defines first stage overcurrent operating status. Depending on this setting, I>1 will be enabled permanently or in case of Voltage
Transformer Supervision (fuse fail) operation
I>1 Status
B170
COL ROW DEFAULT SETTING
33 84 2.0*l1
33 85 1.2*l1
33 96
33 97 Enabled PoleDead
33 98 110
33 99 Enabled
33 9A 0.5
33 9B 0.5
33 9C 0.2
35 00
35 01 Enabled
35 01 Enabled
DESCRIPTION
From 0.1*l1 to 12*l1 in steps of 0.01*l1
[Courier Number (current)]
From 0.2*I1 to 4*I1 in steps of 0.05*I1
[Courier Number (current)]
Disabled
Enabled PoleDead
Enabled ExtPulse
En Pdead + Pulse
[Indexed String]
From 0.2 to 1000 in steps of 0.05
[Courier Number (time-seconds)]
Disabled
Enabled
[Indexed String]
From 0.1 to 2s in steps of 0.1
[Courier Number (time-seconds)]
From 0.1 to 10s in steps of 0.01
[Courier Number (time-seconds)]
From 0.05 to 0.2 in steps of 0.01
[Courier Number (time-seconds)]
Disabled
Enabled
Enabled VTS
Enabled Ch Fail
En VTSorCh Fail
En VTSandCh Fail
[Indexed String]
Disabled
Enabled
Enabled VTS
Enabled Ch Fail
P54A/B/C/E
AVAILABLE OPTIONS
P54xMED-TM-EN-1