GE L90 Instruction Manual page 280

5.6 GROUPED ELEMENTS
from the open pole detector element D60, L60, and L90 only)
FLEXLOGIC OPERAND
OPEN POLE OP **
FLEXLOGIC OPERAND
GND DIST Z2 PKP A
FLEXLOGIC OPERAND
GND DIST Z2 PKP B
FLEXLOGIC OPERAND
GND DIST Z2 PKP C
from the trip output element
FLEXLOGIC OPERAND
TRIP Z2 GR TMR INIT
For ground distance zone 2, there is a provision to start the zone timer with the other distance zones or loop pickup
flags to avoid prolonging ground distance zone 2 operation if the fault evolves from one type to another or migrates
NOTE
from zone 3 or 4 to zone 2. The desired zones should be assigned in the trip output element to accomplish this
functionality.
5
FLEXLOGIC OPERAND
OPEN POLE OP **
FLEXLOGIC OPERAND
GND DIST Z3 PKP A
FLEXLOGIC OPERAND
GND DIST Z3 PKP B
FLEXLOGIC OPERAND
GND DIST Z3 PKP C
** D60, L60, and L90 only.
5-144
TIMER
0 ms
OR
20 ms
TIMER
0 ms
OR
20 ms
TIMER
0 ms
OR
20 ms
Figure 5–70: GROUND DISTANCE ZONE 2 OP SCHEME
TIMER
0 ms
AND
20 ms
TIMER
0 ms
AND
20 ms
TIMER
0 ms
AND
20 ms
Figure 5–71: GROUND DISTANCE ZONES 3 AND HIGHER OP SCHEME
L90 Line Current Differential System
SETTING
GND DIST Z2 DELAY
AND
T
PKP
OR
0
SETTING
GND DIST Z2 DELAY
AND
T
PKP
OR
0
SETTING
AND
GND DIST Z2 DELAY
T
PKP
OR
0
SETTING
GND DIST Z3 DELAY
T
PKP
OR
0
SETTING
GND DIST Z3 DELAY
T
PKP
OR
0
SETTING
GND DIST Z3 DELAY
T
PKP
OR
0
5 SETTINGS
FLEXLOGIC OPERAND
GND DIST Z2 OP A
AND
FLEXLOGIC OPERAND
AND GND DIST Z2 OP B
FLEXLOGIC OPERAND
GND DIST Z2 OP C
AND
FLEXLOGIC OPERAND
GND DIST Z2 OP
OR
837037A1.CDR
FLEXLOGIC OPERAND
GND DIST Z3 OP A
FLEXLOGIC OPERAND
GND DIST Z3 OP B
FLEXLOGIC OPERAND
GND DIST Z3 OP C
FLEXLOGIC OPERAND
GND DIST Z3 OP
OR
837019AA.CDR
GE Multilin