GE 845 Instruction Manual page 443

CHAPTER 4: SETPOINTS
845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
TRIP PICKUP DELAY
Range: 0 s to 600 s in steps of 1 s
Default: 2 s
TRIP DROPOUT DELAY
Range: 0 s to 600 s in steps of 1s
Default: 0 s
TRIP OUTPUT RELAY X
Range: Do Not Operate, Operate
Default: Do Not Operate
ALARM FUNCTION
Range: Disabled, Alarm, Latched Alarm
Default: Disabled
ALARM TEMPERATURE
Range: 1°C to 250°C in steps of 1°C
Default: 130°C
ALARM PICKUP DELAY
Range: 0 s to 600 s in steps of 1 s
Default: 2 s
ALARM DROPOUT DELAY
Range: 0 s to 600 s in steps of 1 s
Default: 0 s
ALARM OUTPUT RELAY X
Range: Do Not Operate, Operate
Default: Do Not Operate
SENSOR OPEN
Range: None, Alarm, Block
Default: None
The setting allows monitoring of an open RTD sensor circuit. If this functionality is not
required, then a value of "None" disables monitoring and assertion of output operands.
If set to "Alarm", the alarm activates when a broken sensor is detected.
If set to "Block", the alarm activates and simultaneously blocks RTD operation when a
broken sensor is detected.
If targets are enabled, a message appears on the display identifying the broken RTD. If
this feature is used, it is recommended that the alarm be programmed as latched so that
intermittent RTD faults are detected and corrective action can be taken.
BLOCK
Range: Off, Any operand from the list of FlexLogic operands
Default: Off
EVENTS
Range: Disabled, Enabled
Default: Enabled
TARGETS
Range: Disabled, Self-reset, Latched
Default: Latched
RTD TEMPERATURE
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