GE MiCOM P40 Agile Technical Manual page 329

Programmable Logic
MiCOM 40 Agile P442, P444
Ordinal English Text
229 A/R Reclaim
230 AR Discrim.
231 A/R Enable
232 A/R SPAR Enable
Description
Internal autoreclose reclaim in progress (reclaim time
timeout in progress).
If it is assigned to an opto input in the PSL and when
energised, the DDB:'A/R Reclaim' signal will start the
internal logic TOR enable (External AR logic applied).
The DDB indicates the reclaim time following a particular
autoreclose shot is timing out. The DDB:'AR Reclaim'
output would be energised at the same instant as any
Cycle outputs are reset. 'A/R Reclaim' may be used to
block low-set instantaneous protection on autoreclosure,
when it has not been time-graded with a downstream
protection. This technique is commonly used when the
downstream devices are fuses, and fuse saving is
implemented. This avoids fuse blowing for transient
faults.
'A/R reclaim' can be connected to Main2 for cycle in
progress external information. It initiates the internal
TOR logic
'Discrimination time' window in progress (starts with the
trip command).
When a single pole trip is issued by the relay, a 1-pole
AR cycle is initiated. The 'Dead time 1' and
'Discrimination time' are started. If the autoreclose logic
detects a single pole or three-pole trip (internal or
external) during the discrimination time-delay, the single
pole high speed autoreclose cycle is disabled and
replaced by a three pole high speed autoreclose cycle, if
enabled. If no three-pole autoreclose is enabled, the
relay trips 3-pole and the autoreclose is blocked.
If the autoreclose logic detects a 3-pole trip (internal or
external) when the Discrimination time-delay has
elapsed and during the 1-pole dead time; the single pole
AR cycle is stopped and the relay trips 3-pole and blocks
the autoreclose.
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)
Single pole autorecloser (SPAR) activated: If it is
assigned to an opto input in the PSL (by default PSL is
inverted and linked to opto 8) and energized, The
DDB:'A/R SPAR Enable' will enable the 1-pole
autoreclose logic (the priority of this input is higher than
the 'CB Control/A/R single pole' setting) - this means the
1-pole autoreclose logic can be disabled even if it has
been activated; if the relevant opto input is not energized
(to be valid, the opto must be energised for over1.2s).
NOTE: After a new PSL has been downloaded to the
relay (including the "TPAR" or "SPAR" cells); the
settings configuration must be uploaded back (from PC
to relay) to update the data in the RAM and the
EEPROM (otherwise discrepancies could appear in the
"A/R enable" logic state).
Set to 1: 1P AR activated (copy of 'SPAR Enable' opto
input OR 'CB Control/ A/R Single pole' enabled)
Reset to 0: if 'SPAR Enable' = 0 OR (A/R Single pole'
disabled)
P44x/EN PL/Hb6
(PL) 6-9
Source
PSL (OUT)
Autorecloser
PSL (OUT)
Autorecloser
PSL (OUT)
Autorecloser
PSL (OUT)
Autorecloser