Rtd Short/Low Temp - GE Multilin 489 Instruction Manual

CHAPTER 5: SETPOINTS
5.9.7

RTD Short/Low Temp

1 RTD
SHORT/LOW TEMP
489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL
Courtesy of NationalSwitchgear.com
PATH: SETPOINTS S8 RTD TEMPERATURE
[ ] RTD SHORT/LOW TEMP
ALARM: Off
ASSIGN ALARM
MESSAGE
RELAYS (2-5): ---5
RTD SHORT/LOW TEMP
MESSAGE
ALARM EVENTS: Off
The 489 has an RTD Short/Low Temperature alarm. This alarm will look at all RTDs that
have either an alarm or trip programmed and determine if an RTD has either a short or a
very low temperature (less than –50°C). Any RTDs that do not have a trip or alarm
associated with them will be ignored for this feature. When a short/low temperature is
detected, the assigned output relay will operate and a message will appear on the display
identifying the RTD that caused the alarm. It is recommended that if this feature is used,
the alarm be programmed as latched so that intermittent RTDs are detected and
corrective action may be taken.
RTD SHORT/LOW TEMP
Range: Off, Latched, Unlatched
Range: Any combination of Relays 2 to
5
Range: On, Off
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