P44x/EN AP/Hb
MiCOM P40 Agile P442, P444
(AP) 5-
Figure 57: Loss of load trip logic
Where:
PZ1, PZ2, PFwd, None
Underreach scheme: Z1 < ZL: Permissive
underreach Z1, Z2 or forward
None: no distance scheme (basic scheme)
Z1<ZL Underreach scheme in Z1
Z2'
Fault in Z2 (lockout by Power swing or Reversal
Guard)
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