GE MiCOM P40 Agile Technical Manual page 351

Programmable Logic
MiCOM 40 Agile P442, P444
Ordinal English Text
227 A/R 234 In Prog
225 A/R 3P In Prog
223 A/R Close
231 A/R Enable
196 A/R Fail
235 A/R Force Sync.
1033 A/R Internal
Description
Further autoreclose cycles in progress: Used to
indicate the autorecloser is timing out delayed
autoreclose dead times for shots 2, 3 or 4. Where
some protection elements should not initiate
autoreclosure for Delayed Autoreclose (DAR) shots,
the protection element operation is combined with 'A/R
234 in Prog' as a logic AND operation in the
Programmable Scheme Logic, and then set to assert
the DDB:'BAR' input, forcing lockout.
Three-pole autoreclose cycle in progress: A three
phase autoreclose cycle is in progress. This output will
remain activated from the initial protection trip until the
circuit breaker is closed successfully or the AR function
is Locked Out, indicating that a dead time timeout is in
progress. This signal may be useful during relay
commissioning to check the operation of the
autoreclose cycle.
Autorecloser Close command to CB: Initiates the
reclose command pulse to the circuit breaker. This
output feeds a signal to the Reclose time-delay, which
maintains the linked reclose contact closed for a time
sufficient to ensure reliable CB mechanism operation.
This DDB signal may also be useful during relay
commissioning to check the operation of the
autoreclose cycle. Where three single pole circuit
breakers are used, the AR Close contact will need to
energise the closing circuits for all three breaker poles
(or alternatively assign three CB Close contacts).
Indicates the autoreclose function is in service
1 = [If 'A/R SPAR Enable' OR 'A/R TPAR Enable'] AND
''Internal A/R' = enabled (setting)
Reset to 0: If 'A/R SPAR Enable'=0 AND 'A/R TPAR
Enable'=0 (if assigned in PSL) + ''Internal A/R' =
disabled (setting)
No check sync / autorecloser failed: If the check sync
conditions are not met prior to reclosing within the time
window, the 'A/R Fail' alarm will be raised.
Force synchronism check to be made (simulate the
CheckSync control and forces the DDB:'CheckSync
OK' (logic output) to 1 during a 1-pole or 3-pole high
speed autoreclose cycle)
The signal is reset with A/R reclaim
Give internal autorecloser present (visible): If it is
assigned to an opto input in the PSL and energised,
the DDB:'A/R Internal' will enable the internal AR logic.
This opto input could be connected to an external
condition such as the Watchdog of the Main1
protection – this activates the internal AR of Main 2
(P44x) in the case of an internal failure of the Main1.
P44x/EN PL/Hb6
(PL) 6-31
Source
PSL (OUT)
Autorecloser
PSL (OUT)
Autorecloser
PSL (OUT)
Autorecloser
PSL (OUT)
Autorecloser
PSL (OUT)
Autorecloser
PSL (OUT)
Autorecloser
PSL (IN)
Autorecloser