GE T60 Instruction Manual page 317

5 SETTINGS
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Five zones of phase distance protection with a minimum 150 ms time delay are provided as backup protection for trans-
formers or adjacent lines.
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)
GE Multilin
PHS DIST Z1
RCA: 85°
PHS DIST Z1 REV
REACH: 2.00 ohms
PHS DIST Z1 REV
REACH RCA: 85°
PHS DIST Z1
COMP LIMIT: 90°
PHS DIST Z1
DIR RCA: 85°
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: 0.150 s
PHS DIST Z1 BLK:
Off
PHS DIST Z1
TARGET: Self-reset
PHS DIST Z1
EVENTS: Disabled
 ).
DISTANCE
T60 Transformer Protection System
5.6 GROUPED ELEMENTS
Range: 30 to 90° in steps of 1
Range: 0.02 to 500.00 ohms in steps of 0.01
Range: 30 to 90° in steps of 1
Range: 30 to 90° in steps of 1
Range: 30 to 90° in steps of 1
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: 0.150 to 65.535 s in steps of 0.001
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
SETTINGS
5

GROUPED
5-183