P44x/EN AP/Hb
MiCOM P40 Agile P442, P444
(AP) 5-
• CB Discrepancy: Used for internal CBA Disc issued by external (opto input) or internal
detection (CB Aux)
5.11.2.2 Outputs
• CB Status Alarm
Picks up when CB Discrepancy status is detected after CBA timer issued externally by opto
or internally by CB Aux
• CB aux A
• CB aux B
• CB aux C
Pole A+B+C detected Dead pole by the internal logic or CB status
• Any Pole Dead
If it is assigned in the PSL, the DDB: 'Any Pole Dead' signal indicates that one or more
poles are open.
• All Pole Dead
If it is assigned in the PSL, The DDB: 'All Pole Dead' signal indicates that all poles are dead
(all 3 poles are open).
Figure 135: Logic CBAUX scheme
CBA time disc=150msec fixed value
Dead Pole Logic:
• CBA_A = Pole A Dead
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