GE Multilin D30 Line Distance Protection System 5-1215 SETTINGS 5.6 GROUPED ELEMENTS5by an undervoltage condition, which in turn is controlled by the VT FUSE FAIL OP operand with a 10 ms coordination timer. Ifa trip from distance in not required, then it can be disabled with the LINE PICKUP DISTANCE TRIP setting. Configure the LINEPICKUP 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 overreachingdistance zone when reclosing the line with the other line end open. The AR ACCELERATE setting is provided to achievezone 1 extension functionality if external autoreclosure is employed. Another zone 1 extension approach is to permanentlyapply an overreaching zone, and reduce the reach when reclosing. This philosophy can be programmed via the autore-close scheme.Figure 5–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
