GE D60 User Manual

GE Multilin D60 Line Distance Protection System 5-169
5 SETTINGS 5.6 GROUPED ELEMENTS
5
an undervoltage condition, which in turn is controlled by the VT FUSE FAIL OP operand with a 10 ms coordination timer. If a
trip from distance in not required, then it can be disabled with the LINE PICKUP DISTANCE TRIP setting. Configure the LINE
PICKUP RCL TRIP
operand to perform a trip action if the intent is apply zone 1 extension.
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 AR ACCELERATE setting is provided to achieve
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.
Figure 5–66: LINE PICKUP SCHEME LOGIC
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GE D60 Specifications

General

Frequency	50/60 Hz
Manufacturer	General Electric (GE)
Communication Protocols	DNP3
Mounting	Panel mount
Operating Temperature	-20°C to +60°C