ABB REL301 - Page 45

I.L. 40-386.3
2-24 (10/94)
R
* Zone3 set in reverse direction
NOTE: ZoneX G = “TRIP DIRECTION’ Reach
ZoneXG R = “NON-TRIP” Reach
Z
2
Zone1G R
Zone2G R
FDOG
RDOG
+jX
Zone2 G
Figure 2-2 Mho Characteristic for Phase-Ground Faults
Z
3
Z
1
Ang Pos
Zone3 G*
Zone1 G
Zone3G R*