GE UR series Instruction Manual page 261

5 SETTINGS
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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 setting (common for the distance elements of all zones as entered under
SIGNAL SOURCE
ELEMENTS SETTING GROUP 1(6)
2. The
MEMORY DURATION
GROUPED ELEMENTS SETTING GROUP 1(6)
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 [
or time-delayed elements (operate [
ing tripping mode.
Ensure that the
PHASE VT SECONDARY VOLTAGE
menu) is set correctly to prevent improper operation of associated memory action.
VOLTAGE BANK
WARNING
• 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
GE Multilin
PHS DIST Z1
DIR COMP LIMIT: 90°
PHS DIST Z1 QUAD
RGT BLD: 10.00 ohms
PHS DIST Z1 QUAD
RGT BLD RCA: 85°
PHS DIST Z1 QUAD
LFT BLD: 10.00 ohms
PHS DIST Z1 QUAD
LFT BLD RCA: 85°
PHS DIST Z1
SUPV: 0.200 pu
PHS DIST Z1 VOLT
LEVEL: 0.000 pu
PHS DIST Z1
DELAY: 0.000 s
PHS DIST Z1 BLK:
Off
PHS DIST Z1
TARGET: Self-reset
PHS DIST Z1
EVENTS: Disabled
).
DISTANCE
setting (common for the distance elements of all zones as entered under
DISTANCE
] FlexLogic™ operands), only zone 1 is intended for the instantaneous under-reach-
OP
setting (see the
PHS DIST Z1 REACH
and
PHS DIST Z1 REV REACH RCA
L60 Line Phase Comparison System
Range: 30 to 90° in steps of 1
Range: 0.02 to 500.00 ohms in steps of 0.01
Range: 60 to 90° in steps of 1
Range: 0.02 to 500.00 ohms in steps of 0.01
Range: 60 to 90° in steps of 1
Range: 0.050 to 30.000 pu in steps of 0.001
Range: 0.000 to 5.000 pu in steps of 0.001
Range: 0.000 to 65.535 s in steps of 0.001
Range: FlexLogic™ operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
).
] and dropout [
PKP
SETTINGS SYSTEM SETUP
and settings, and the reverse reach imped-
PHS DIST Z1 RCA
as illustrated below.
5.5 GROUPED ELEMENTS
SETTINGS GROUPED
SETTINGS
] FlexLogic™ operands)
DPO
AC INPUTS
PHS DIST Z1 RCA
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