GE L90 Instruction Manual page 528

Line current differential system
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CONTROL ELEMENTS
BRK RSTR 1 BRK OPEN
the breaker is open. It is important to assign either 52 contact with this setting or breaker close command with
setting to give clear indication to the relay about breaker status.
CLS CMD
BRK RSTR 1 OPEN CMD
breaker is opened, either manually or from protection logic.
BRK RSTR 1 CLS CMD
breaker is closed.
5
5.8.11.5 Continuous monitor
SETTINGS  CONTROL ELEMENTS  MONITORING ELEMENTS  CONTINUOUS MONITOR
 CONTINOUS MONITOR
The continuous monitor logic is used to detect the operation of any tripping element that has operated under normal load
conditions; that is, when the disturbance detector has not operated. Because all tripping is supervised by the disturbance
detector function, no trip is issued under these conditions. This can occur when an element is incorrectly set so that it can
misoperate under load. The continuous monitor can detect this state and issue an alarm and/or block the tripping of the
relay.
5-342
— Assigns a FlexLogic operand indicating the open position of the breaker. It must be logic "1" when
— Assigns a FlexLogic operand indicating a breaker open command. It must be logic "1" when the
— Assigns a FlexLogic operand indicating a breaker close command. It must be logic "1" when the
Figure 5-195: Breaker restrike logic
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
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
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
BRK RSTR 1

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