GE L90 Instruction Manual page 265

5 SETTINGS
d) CONTINUOUS MONITOR
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PATH: SETTINGS CONTROL ELEMENTS
# CONTINUOUS MONITOR
#
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
The Continuous Monitor logic is intended to detect the operation of any tripping element that has operated under normal
load conditions; that is, when the DD disturbance detector has not operated. Because all tripping is supervised by the DD
function, no trip will be issued under these conditions. This could occur when an element is incorrectly set so that it may
misoperate under load. The Continuous Monitor can detect this state and issue an alarm and/or block the tripping of the
relay.
SETTING
CONT MONITOR
FUNCTION:
Disabled = 0
Enabled = 1
SETTING
CONT MONITOR
I_SUPV:
Off = 0
SETTING
CONT MONITOR
I_OP:
Off = 0
SETTING
CONT MONITOR
V_SUPV:
Off = 0
SETTING
CONT MONITOR
V_OP:
Off = 0
GE Multilin
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MONITORING ELEMENTS
CONT MONITOR
FUNCTION: Disabled
CONT MONITOR I-OP:
Off
CONT MONITOR I-SUPV:
Off
CONT MONITOR V-OP:
Off
CONT MONITOR V-SUPV:
Off
CONT MONITOR
TARGET: Self-reset
CONT MONITOR
EVENTS: Disabled
AND
AND
AND
AND
Figure 5–106: CONTINUOUS MONITOR SCHEME LOGIC
L90 Line Differential Relay
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CONTINUOUS MONITOR
Range: Disabled, Enabled
Range: FlexLogic™ operand
Any Current Element(s) OP
Range: FlexLogic™ operand
To supervise current logic, use 50DD OP
Range: FlexLogic™ operand
Any Voltage Element(s) OP
Range: FlexLogic™ operand. To supervise voltage logic,
use VT FUSE FAIL OP
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
CONSTANT
CONT
MONITOR
TIMER
OR t = 1 sec
pkp
t = 0
RST
FLEXLOGIC OPERANDS
CONT MONITOR OP
CONT MONITOR PKP
CONT MONITOR DPO
5.6 CONTROL ELEMENTS
827049A3.vsd
5-175
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