GE L90 Instruction Manual page 291

5 SETTINGS
SETTING
POWER SWING MODE:
3-step
AND
AND
2-step
AND
3-step
2-step
AND
AND
NOTE:
L1 AND L4 LATCHES ARE SET DOMINANT
L2, L3 AND L5 LATCHES ARE RESET DOMINANT
Figure 5–80: POWER SWING DETECT SCHEME LOGIC (3 of 3)
GE Multilin
SETTINGS
POWER SWING
DELAY 1 PICKUP:
POWER SWING
DELAY 1 RESET:
t
PKP
S Q1
t
RST
L1
R
SETTING
POWER SWING
DELAY 2 PICKUP:
t
PKP
S Q2
0
L2
R
SETTING
POWER SWING
DELAY 3 PICKUP:
t
PKP
S Q3
0
L3
R
SETTING
POWER SWING
DELAY 4 PICKUP:
t
PKP
S Q4
0
L4
R AND
SETTING
POWER SWING BLK:
Off=0
L90 Line Current Differential System
5.6 GROUPED ELEMENTS
S Q5
FLEXLOGIC OPERAND
L5
POWER SWING 50DD
R
OR
OR
SETTING
POWER SWING TRIP
MODE:
SETTING
POWER SWING
Early
SEAL-IN DELAY:
0
Delayed
FLEXLOGIC OPERANDS
POWER SWING BLOCK
POWER SWING UN/BLOCK
FLEXLOGIC OPERAND
POWER SWING TMR2 PKP
FLEXLOGIC OPERAND
POWER SWING TMR3 PKP
FLEXLOGIC OPERAND
POWER SWING INCOMING
FLEXLOGIC OPERAND
t
RST
AND POWER SWING TRIP
FLEXLOGIC OPERAND
POWER SWING TMR4 PKP
FLEXLOGIC OPERAND
POWER SWING OUTGOING
827841A4.CDR
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