GE UR Series L90 Instruction Manual page 301

Line current differential system
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5 SETTINGS
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 5–66: DIRECTIONAL MHO DISTANCE CHARACTERISTIC
Figure 5–67: 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
L90 Line Current Differential System
5.6 GROUPED ELEMENTS
settings, and the reverse reach imped-
as illustrated below.
R
837720A1.CDR
COMP LIMIT
R
837802A1.CDR
5
5-163

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