GE P444

P
44x/EN AP/Hb6
Application Notes
(AP) 5
-28 MiCOM P40 Agile
P442, P444
 DEF Trip A, DEF Trip B and DEF Trip C (Directional Earth fault section),
 User Trip A, User Trip B and User Trip C (trip logic),
 External Trip A, External Trip B and External trip C (PSL)
• Outputs:
• 1P Trip,
 3P Trip,
 Any Trip A, Any Trip B and Any Trip C,
 Any Int. TripA, Any Int. TripB and Any Int. TripC.
2.5.2.1 Logic diagram
The next diagram shows general trip logic:
3-pole trip list:
IN>1 Trip IN>2 Trip I2> Trip
SOTF/TOR
Trip
Loss. Load Trip I>1 Trip I>2 Trip I>3 Trip
I>4 Trip V<1 Trip V<2 Trip V<3 Trip
V<4 Trip V>1 Trip V>2 Trip V>3 Trip
V>4 Trip ZSP Trip F<1 Trip F<2 Trip
F<3 Trip F<4 Trip F>1 Trip F>2 Trip
Figure 10: General trip logic