GE D60 Instruction Manual page 293

5 SETTINGS
Ensure that the Phase VT Secondary Voltage setting (see the SETTINGS ðò SYSTEM SETUP ð AC
INPUTS ðò VOLTAGE BANK menu) is set correctly to prevent improper operation of associated
memory action.
• PHS DIST Z1 DIR: All phase distance zones are reversible. The forward direction is defined by the
setting, whereas the reverse direction is shifted 180° from that angle. The non-directional zone spans between the for-
ward reach impedance defined by the
ance defined by
PHS DIST Z1 REV REACH
• PHS DIST Z1 SHAPE: This setting selects the shape of the phase distance function between the mho and quadrilat-
eral characteristics. The selection is available on a per-zone basis. The two characteristics and their possible varia-
tions are shown in the following figures.
Figure 5–67: DIRECTIONAL MHO DISTANCE CHARACTERISTIC
Figure 5–68: NON-DIRECTIONAL MHO DISTANCE CHARACTERISTIC
GE Multilin
and
PHS DIST Z1 REACH PHS DIST Z1 RCA
and
PHS DIST Z1 REV REACH RCA
X
COMP LIMIT
DIR COMP LIMIT
DIR COMP LIMIT
DIR RCA
RCA
X
RCA
REV REACH
RCA
D60 Line Distance Protection System
5.6 GROUPED ELEMENTS
PHS DIST Z1 RCA
settings, and the reverse reach imped-
as illustrated below.
R
837720A1.CDR
COMP LIMIT
R
837802A1.CDR
5
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