GE D60 Instruction Manual page 448

GROUPED ELEMENTS
5
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. Assign the required zones in the trip output element to accomplish this
functionality.
5-234
Figure 5-126: Ground distance zone 1 OP scheme
Figure 5-127: Ground distance zone 2 OP scheme
D60 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS