5-162
L90 Line Current Differential System
GE Multilin
5.6 GROUPED ELEMENTS
5 SETTINGS
5
The phase mho distance function uses a dynamic 100% memory-polarized mho characteristic with additional reactance,
directional, and overcurrent supervising characteristics. When set to “Non-directional”, the mho function becomes an offset
mho with the reverse reach controlled independently from the forward reach, and all the directional characteristics
removed.
The phase quadrilateral distance function is comprised of a reactance characteristic, right and left blinders, and 100%
memory-polarized directional and current supervising characteristics. When set to “Non-directional”, the quadrilateral func-
tion applies a reactance line in the reverse direction instead of the directional comparators. Refer to Chapter 8 for additional
information.
Each phase distance zone is configured individually through its own setting menu. All of the settings can be independently
modified for each of the zones except:
1.
The
SIGNAL SOURCE
setting (common for the distance elements of all zones as entered under
SETTINGS
GROUPED
ELEMENTS
SETTING GROUP 1(6)
DISTANCE
).
2.
The
MEMORY DURATION
setting (common for the distance elements of all zones as entered under
SETTINGS
GROUPED ELEMENTS
SETTING GROUP 1(6)
DISTANCE
).
The common distance settings described earlier must be properly chosen for correct operation of the phase distance ele-
ments. Additional details may be found in chapter 8:
Theory of operation
.
Although all zones can be used as either instantaneous elements (pickup [
PKP
] and dropout [
DPO
] FlexLogic operands) or
time-delayed elements (operate [
OP
] FlexLogic operands), only zone 1 is intended for the instantaneous under-reaching
tripping mode.
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
PHS DIST Z1 RCA
setting, whereas the reverse direction is shifted 180° from that angle. The non-directional zone spans between the for-
MESSAGE
PHS DIST Z1
DIR COMP LIMIT: 90°
Range: 30 to 90° in steps of 1
MESSAGE
PHS DIST Z1 QUAD
RGT BLD: 10.00 ohms
Range: 0.02 to 500.00 ohms in steps of 0.01
MESSAGE
PHS DIST Z1 QUAD
RGT BLD RCA: 85°
Range: 60 to 90° in steps of 1
MESSAGE
PHS DIST Z1 QUAD
LFT BLD: 10.00 ohms
Range: 0.02 to 500.00 ohms in steps of 0.01
MESSAGE
PHS DIST Z1 QUAD
LFT BLD RCA: 85°
Range: 60 to 90° in steps of 1
MESSAGE
PHS DIST Z1
SUPV: 0.200 pu
Range: 0.050 to 30.000 pu in steps of 0.001
MESSAGE
PHS DIST Z1 VOLT
LEVEL: 0.000 pu
Range: 0.000 to 5.000 pu in steps of 0.001
MESSAGE
PHS DIST Z1
DELAY: 0.000 s
Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
PHS DIST Z1 BLK:
Off
Range: FlexLogic operand
MESSAGE
PHS DIST Z1
TARGET: Self-reset
Range: Self-reset, Latched, Disabled
MESSAGE
PHS DIST Z1
EVENTS: Disabled
Range: Disabled, Enabled
Summary of Contents for UR Series L90
Page 652: ...A 16 L90 Line Current Differential System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 772: ...B 120 L90 Line Current Differential System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Page 802: ...C 30 L90 Line Current Differential System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 812: ...D 10 L90 Line Current Differential System GE Multilin D 1 IEC 60870 5 104 APPENDIX D D ...
Page 824: ...E 12 L90 Line Current Differential System GE Multilin E 2 DNP POINT LISTS APPENDIX E E ...
Page 834: ...F 10 L90 Line Current Differential System GE Multilin F 3 WARRANTY APPENDIX F F ...
Page 846: ...xii L90 Line Current Differential System GE Multilin INDEX ...
