Pilot Schemes - GE L90 Instruction Manual

5 SETTINGS
from open pole logic sheet 1
ENABLED
from the trip output element
TIMER
FLEXLOGIC OPERAND
0.5 cycles
TRIP PHASE A
from open pole logic sheet 1
PHASE A
from the trip output element
TIMER
FLEXLOGIC OPERAND
0.5 cycles
TRIP PHASE B
from open pole logic sheet 1
PHASE B
from the trip output element
TIMER
FLEXLOGIC OPERAND
0.5 cycles
TRIP PHASE C
from open pole logic sheet 1
PHASE C
SETTING
Open Pole Mode
= Accelerated
= Traditional
a) PERMISSIVE OVER-REACHING TRANSFER TRIP (POTT)
PATH: SETTINGS CONTROL ELEMENTS
POTT SCHEME
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
GE Multilin
0
AND
OR
0
AND
OR
0
AND
OR
Figure 5–136: OPEN POLE DETECTOR LOGIC (Sheet 2 of 2)

PILOT SCHEMES

POTT SCHEME
FUNCTION: Disabled
POTT PERMISSIVE
ECHO: Disabled
POTT RX PICKUP
DELAY: 0.000 s
TRANS BLOCK PICKUP
DELAY: 0.020 s
TRANS BLOCK RESET
DELAY: 0.090 s
ECHO DURATION:
0.100 s
ECHO LOCKOUT:
0.250 s
LINE END OPEN PICKUP
DELAY: 0.050 s
POTT SEAL-IN
DELAY: 0.400 s
GND DIR O/C FWD:
Off
POTT RX:
Off
L90 Line Current Differential System
5.7 CONTROL ELEMENTS
TIMER
0
AND
1 cycle
TIMER
0
AND
1 cycle
TIMER
0
AND
1 cycle
POTT SCHEME
Range: Disabled, Enabled
Range: Disabled, Enabled
Range: 0.000 to 65.535 s in steps of 0.001
Range: 0.000 to 65.535 s in steps of 0.001
Range: 0.000 to 65.535 s in steps of 0.001
Range: 0.000 to 65.535 s in steps of 0.001
Range: 0.000 to 65.535 s in steps of 0.001
Range: 0.000 to 65.535 s in steps of 0.001
Range: 0.000 to 65.535 s in steps of 0.001
Range: FlexLogic™ operand
Range: FlexLogic™ operand
FLEXLOGIC OPERAND
OPEN POLE BLK N
XOR
FLEXLOGIC OPERAND
OPEN POLE OP A Φ
FLEXLOGIC OPERAND
OPEN POLE BLK AB
OR
FLEXLOGIC OPERAND
OPEN POLE OP B Φ
FLEXLOGIC OPERAND
OPEN POLE BLK BC
OR
FLEXLOGIC OPERAND
OPEN POLE OP C Φ
FLEXLOGIC OPERAND
OPEN POLE BLK CA
OR
FLEXLOGIC OPERAND
OPEN POLE OP
OR
837038A1.CDR
5.7.10 PILOT SCHEMES
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