GE P444

Application Notes
P44x/EN AP/Hb
6
MiCOM P40 Agile P442, P444
(AP) 5-
109
Figure 84: Shared channel – blocking scheme
Send logic: DEF Reverse
Trip logic: IN> Forward, plus Channel NOT Received, with small set delay.
IN> Fwd (A)
P0550ENa
ZL
A B
IN> Fwd (B)
IN> Rev (A)
IN> Rev (B)
Figure 85: The DEF blocking scheme