GE P4A Technical Manual page 812

Appendix B - Settings and Signals
ORDINAL
VT supervision slow block - blocks elements which would otherwise maloperate some time after a fuse failure event occurs
834 Bfail1 Trip 3ph
Three phase output from circuit breaker failure logic, stage 1
835 Bfail2 Trip 3ph
Three phase output from circuit breaker failure logic, stage 2
838 Control Trip
Control trip - operator trip instruction to the circuit breaker, via menu, or SCADA. (Does not operate for protection element trips)
839 Control Close
Control close command to the circuit breaker. Operates for a manual close command (menu, SCADA), and additionally is driven by the auto-
reclose close command
842 Close in Prog
Control close in progress - the relay has been given an instruction to close the circuit breaker, but the manual close timer delay has not yet
finished timing out
844 AR 3pole in prog
Auto Reclose 3 pole in Progress
845 AR 1pole in prog
Auto Reclose AR 1 pole in Progress
846 Seq Counter = 0
Sequence Counter = 0
847 Seq Counter = 1
Sequence Counter = 1
848 Seq Counter = 2
Sequence Counter = 2
849 Seq Counter = 3
Sequence Counter = 3
850 Seq Counter = 4
Sequence Counter = 4
851 Seq Counter > 4
Sequence Counter > 4
852 CB Succ 3P AR
This signal is set when CB has successfully completed a three phase autoreclose cycle.
853 3P Dead Time IP
Three pole dead time in progress
854 Auto Close
This is a signal issued by the autoreclose logic to the general CB Control logic when the conditions to autoreclose CB are satisfied (dead time
complete, CB healthy etc).
858 AR Force 3 pole
Used by in-built Trip conversion logic to allow AR to convert CB to 3pole tripping
859 AR Blocked
Indicates that AR is in one of the following states, Disabled, Inhibited, AR In Progress or Locked out
860 Lockout Alarm
Composite lockout alarm - circuit breaker locked out due to auto-recloser, or condition monitoring reasons
862 Block Contacts
DDB to block output contacts, same as setting Commissioning Column -> Test Mode -> Contacts Blocked
863 Contacts Blocked
Indicates contacts blocked mode enabled. Can be mapped in PSL and sent via InterMiCOM/IM64 to block contacts at the remote end.
864 IA< Start
A phase undercurrent level detector pickup (detects low current). It is used for breaker failure and for fault record reset.
865 IB< Start
B phase undercurrent level detector pickup (detects low current). It is used for breaker failure and for fault record reset.
866 IC< Start
C phase undercurrent level detector pickup (detects low current). It is used for breaker failure and for fault record reset.
873 ISEF< Start
SEF undercurrent level detector pickup (detects low current in CT SEF)
874 CBF Non I Trip
Mapped in PSL to all none current protection trip signals to initiate CB Fail
877 TOC Active
Trip on close functions (either SOTF or TOR) active. These elements are in-service for a period of time following circuit breaker closure
B246
SIGNAL NAME
DDB_CBF1_TRIP_3PH
DDB_CBF2_TRIP_3PH
DDB_CONTROL_TRIP
DDB_CONTROL_CLOSE
DDB_CONTROL_CLOSE_IN_PROGRESS
DDB_AR_3_POLE_IN_PROGRESS
DDB_AR_1_POLE_IN_PROGRESS
DDB_SEQ_COUNT_0
DDB_SEQ_COUNT_1
DDB_SEQ_COUNT_2
DDB_SEQ_COUNT_3
DDB_SEQ_COUNT_4
DDB_SEQ_COUNT_5
DDB_AR_SUCCESSFUL_RECLOSE
DDB_DEAD_TIME_IN_PROGRESS
DDB_AUTO_CLOSE
DDB_AR_FORCE_3_POLE_TRIPS
DDB_AR_BLOCKED
DDB_CB_LOCKOUT_ALARM
DDB_CONTACTS_BLOCKED_IP
DDB_CONTACTS_BLOCKED_OP
DDB_PHASE_A_UNDERCURRENT
DDB_PHASE_B_UNDERCURRENT
DDB_PHASE_C_UNDERCURRENT
DDB_SEF_UNDERCURRENT
DDB_CBF_NON_I_TRIP
DDB_TOC_ACTIVE
ELEMENT NAME
DESCRIPTION
P54A/B/C/E
P54xMED-TM-EN-1