44x/EN AP/Hb6
-162 MiCOM P40 Agile
The CB healthy logic is used as a negative logic (due to an inverter in the scheme – see
Figure 118 inhibit window logic) but the DDB considers CB healthy as a positive logic
[1=opto input energised during inhwind (setting) =AR close pulse]
One-pole autoreclose cycle in progress (A/R 1P in Prog) and AR discrimination
(discrimination time-delay window in progress, starts with the trip command) logic:
Figure 127: A/R 1 pole in progress and A/R discrim logic
“3-pole Autoreclose function’ = ‘CB Control / A/R Three Pole’ or, when assigned in the PSL,
‘A/R TPAR Enable’ or ‘A/R SPAR Enable’ opto inputs.
Figure 128: 3-Pole AR in progress
Where single-pole tripping is enabled, a fixed logic converts single-phase trips for faults on
autoreclosure to three-pole trips:
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