GE L60 Instruction Manual page 139

5 SETTINGS
The disturbance detector responds to the change in currents of twice the current cut-off level. The default cut-off threshold
is 0.02 pu; thus by default the disturbance detector responds to a change of 0.04 pu. The metering sensitivity setting (
UCT SETUP DISPLAY PROPERTIES
accordingly.
GE Multilin
ACTUAL
SOURCE 1
CURRENT PHASOR
I_1
I_2
I_0
ACTUAL
SOURCE 2
CURRENT PHASOR
I_1
I_2
I_0
ACTUAL
SOURCE 6
CURRENT PHASOR
I_1
I_2
I_0
Figure 5–12: DISTURBANCE DETECTOR LOGIC DIAGRAM
CURRENT CUT-OFF LEVEL
L60 Line Phase Comparison Relay
SETTING
PRODUCT SETUP/DISPLAY
PROPERTIES/CURRENT
CUT-OFF LEVEL
_1 - _1' >2*CUT-OFF
FLEXLOGIC OPERAND
I I
_2 - _2' >2*CUT-OFF
OR SRC 1 50DD OP
I I
_0 - _0' >2*CUT-OFF
I I
Where ' is 2 cycles old
I
SETTING
PRODUCT SETUP/DISPLAY
PROPERTIES/CURRENT
CUT-OFF LEVEL
_1 - _1' >2*CUT-OFF FLEXLOGIC OPERAND
I I
_2 - _2' >2*CUT-OFF SRC 2 50DD OP
OR
I I
_0 - _0' >2*CUT-OFF
I I
Where ' is 2 cycles old
I
SETTING
PRODUCT SETUP/DISPLAY
PROPERTIES/CURRENT
CUT-OFF LEVEL
_1 - _1' >2*CUT-OFF
FLEXLOGIC OPERAND
I I
_2 - _2' >2*CUT-OFF
OR SRC 6 50DD OP
I I
_0 - _0' >2*CUT-OFF
I I
Where ' is 2 cycles old
I
827092A3.CDR
) controls the sensitivity of the disturbance detector
5.3 SYSTEM SETUP
PROD-
5
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