GE L90 Instruction Manual page 297

5 SETTINGS 5.6 GROUPED ELEMENTS
Figure 5–78: GROUND DISTANCE ZONE 2 OP SCHEME
For ground distance zone 2, there is a provision to start the zone timer with the other distance zones or loop pickup
flags to avoid prolonging ground distance zone 2 operation if the fault evolves from one type to another or migrates
from zone 3 or 4 to zone 2. The desired zones should be assigned in the trip output element to accomplish this
NOTE
functionality.
5
Figure 5–79: GROUND DISTANCE ZONES 3 AND HIGHER OP SCHEME
GE Multilin L90 Line Current Differential System 5-167