GE Multilin L60, Инструкция по эксплуатации

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5-166 L60 Line Phase Comparison System GE Multilin
5.5 GROUPED ELEMENTS 5 SETTINGS
5
Ensure that the Phase VT Secondary Voltage setting (see the
SETTINGS

SYSTEM SETUP

AC
INPUTS

VOLTAGE BANK
menu) is set correctly to prevent improper operation of associated mem-
ory action.
• PHS DIST Z1 DIR: All phase distance zones are reversible. The forward direction is defined by the
PHS DIST Z1 RCA
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
PHS DIST Z1 REACH
and
PHS DIST Z1 RCA
settings, and the reverse reach imped-
ance defined by
PHS DIST Z1 REV REACH
and
PHS DIST Z1 REV REACH RCA
as illustrated below.
• 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 5–63: DIRECTIONAL MHO DISTANCE CHARACTERISTIC
Figure 5–64: NON-DIRECTIONAL MHO DISTANCE CHARACTERISTIC
NOTICE
837720A1.CDR
X
R
R
EAC
H
RCA
DIR RCA
DIR COMP LIMIT
DIR COMP LIMIT
COMP LIMIT
837802A1.CDR
X
R
RCA
COMP LIMIT
RE
V
R
E
A
C
H
RE
A
C
H
REV REACH
RCA