GE P442 - Autoreclose Force Sync; CB Discrepancy; Check Sync Signal will be Forced at the End of Dead Time; No Pick-Up at the End of the Dead Time

P
44x/EN AP/Hb6
Application Notes
(AP) 5
-158 MiCOM P40 Agile
P442, P444
• When “autoreclose Lockout / Block A/R” is enabled, the autoreclose does not initiate
any additional A/R cycle. If the autorecloser locks out during a cycle, ‘A/R close’ is
blocked.
• A dedicated PSL can be created for performing an autoreclose lockout in case of
confirmed Fuse Failure.
5.10.1.8 Autoreclose force Sync
The DDB: ‘A/R Force Sync’ forces synchronism check to be made.
It simulates the check synchronisation control and forces the logical DDB output
'CheckSync OK' at 1 during a 1 pole or 3 poles high speed AR cycle.
Figure 120: No pick-up at the end of the dead time
Figure 121: Check sync signal will be forced at the end of dead time
5.10.1.9 CB Discrepancy
The DDB: ‘CB Discrepancy’ signal informs the protection of a pole discrepancy status (one
pole opened and the other two poles closed). It must be set to high logical level before Dead
time 1 has elapsed – it can also be generated internally (see Cbaux logic).
Figure 122: Pole discrepancy (CBA-Disc)