GE 845 - Page 420

4–292 845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
MONITORING CHAPTER 4: SETPOINTS
connection is either open or the temperature is greater than 250°C. An RTD is detected as
Shorted when the RTD connection is either shorted or the temperature is equal to less than
-40°C.
NOTE
NOTE:
The RTD input is active regardless of whether or not, the RTD Trip, or/and RTD Alarm
functions are enabled.
Path: Setpoints > RTD Temperature > RTD 1[X]
TRIP FUNCTION
Range: Disabled, Trip, Configurable
Default: Disabled
For Transformer applications, if a trip is not required from the RTD, the user can select
“Configurable”. The “Configurable” setting enable the RTD without producing trip.
NAME
Range: Up to 13 alphanumeric characters
Default: RTD 1
TYPE
Range: 100 Ω Platinum, 100 Ω Nickel, 120 Ω Nickel
Default: 100 Ω Platinum
Selects the type of the RTD used.
TRIP TEMPERATURE
Range: 1°C to 250°C in steps of 1°C (33°F to 482°F in steps of 2°F)
Default: 155°C (311°F)
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
For details see Common Setpoints
.
ALARM FUNCTION
Range: Disabled, Alarm, Latched Alarm
Default: Disabled
ALARM TEMPERATURE
Range: 1°C to 250°C in steps of 1°C (33°F to 482°F in steps of 2°F)
Default: 130°C (266°F)
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
For details see Common Setpoints
.
BLOCK
Range: Off, Any FlexLogic operand
Default: Off