GE D30 Instruction Manual page 185

5 SETTINGS
by an undervoltage condition, which in turn is controlled by the
a trip from distance in not required, then it can be disabled with the
operand to perform a trip action if the intent is apply zone 1 extension.
PICKUP RCL TRIP
The zone 1 extension philosophy used here normally operates from an under-reaching zone, and uses an overreaching
distance zone when reclosing the line with the other line end open. The
zone 1 extension functionality if external autoreclosure is employed. Another zone 1 extension approach is to permanently
apply an overreaching zone, and reduce the reach when reclosing. This philosophy can be programmed via the autore-
close scheme.
GE Multilin
VT FUSE FAIL OP
Figure 5–38: LINE PICKUP SCHEME LOGIC
D30 Line Distance Relay
5.5 GROUPED ELEMENTS
operand with a 10 ms coordination timer. If
setting. Configure the
LINE PICKUP DISTANCE TRIP
setting is provided to achieve
AR ACCELERATE
LINE
5
5-87