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Continuous Monitor - GE UR Series Instruction Manual

Line differential relay.
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5.6 CONTROL ELEMENTS
ÖØ
PATH: SETTINGS
CONTROL ELEMENTS

CONTINUOUS MONITOR

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
5
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
5-144
ÖØ
MONITORING ELEMENTS
CONT MONITOR
FUNCTION: Disabled
CONT MONITOR I-OP:
MESSAGE
Off
CONT MONITOR I-SUPV:
MESSAGE
Off
CONT MONITOR V-OP:
MESSAGE
Off
CONT MONITOR V-SUPV:
MESSAGE
Off
CONT MONITOR
MESSAGE
TARGET: Self-reset
CONT MONITOR
MESSAGE
EVENTS: Disabled
AND
AND
Figure 5–75: CONTINUOUS MONITOR SCHEME LOGIC
L90 Line Differential Relay
ÖØ
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
AND
CONSTANT
CONT
MONITOR
TIMER
OR
t
= 1 sec
pkp
t
= 0
RST
AND
5 SETTINGS
5.6.9 CONTINUOUS MONITOR
FLEXLOGIC OPERANDS
CONT MONITOR OP
CONT MONITOR PKP
CONT MONITOR DPO
827049A3.vsd
GE Power Management

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L90

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