GE 489 User Manual

GE Power Management
489 Generator Management Relay 5-17
5 ACTUAL VALUES 5.4 A3 LEARNED DATA
5
5.4 A3 LEARNED DATA 5.4.1 PARAMETER AVERAGES
The 489 calculates the average magnitude of several parameters over a period of time. This time is specified by
S1 489
SETUP \ PREFERENCES \ PARAMETER AVERAGES CALC PERIOD
setpoint (default 15 minutes). The calculation is a sliding win-
dow and is ignored when the generator is offline (that is, the value that was calculated just prior to going offline will be held
until the generator is brought back online and a new calculation is made). Parameter averages will not update if a digital
input programmed as Test Input is shorted.
5.4.2 RTD MAXIMUMS
The 489 will learn the maximum temperature for each RTD. This information can be cleared using the
S1 489 SETUP \ CLEAR
DATA \ CLEAR RTD MAXIMUMS
setpoint. The RTD maximums will not update if a digital input programmed as Test Input is
shorted. If no RTDs are programmed in the
S7 RTD TEMPERATURE
setpoints page, the
THIS FEATURE NOT PROGRAMMED
flash message will appear when an attempt is made to enter this group of messages.

PARAMETER AVERAGES

[ENTER] for more
AVERAGE GENERATOR
LOAD: 100% FLA
Range: 0 to 2000% FLA
AVERAGE NEG. SEQ.
CURRENT: 0% FLA
Range: 0 to 2000% FLA
AVERAGE PHASE-PHASE
VOLTAGE: 0 V
Range: 0 to 50000 V. Not seen if VT CONNECTION is
programmed as None

RTD MAXIMUMS

[ENTER] for more
RTD #1
MAX. TEMP.: 40°C
Range: –50 to 250°C. Not seen if RTD programmed as
None. The first line of this message reflects the
RTD Name as programmed.
RTD #2
MAX. TEMP.: 40°C
Range: as for RTD #1 above
RTD #3
MAX. TEMP.: 40°C
Range: as for RTD #1 above
RTD #4
MAX. TEMP.: 40°C
Range: as for RTD #1 above
RTD #5
MAX. TEMP.: 40°C
Range: as for RTD #1 above
RTD #6
MAX. TEMP.: 40°C
Range: as for RTD #1 above
RTD #7
MAX. TEMP.: 40°C
Range: as for RTD #1 above
RTD #8
MAX. TEMP.: 40°C
Range: as for RTD #1 above
RTD #9
MAX. TEMP.: 40°C
Range: as for RTD #1 above
RTD #10
MAX. TEMP.: 40°C
Range: as for RTD #1 above
RTD #11
MAX. TEMP.: 40°C
Range: as for RTD #1 above
RTD #12
MAX. TEMP.: 40°C
Range: as for RTD #1 above
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GE 489 Specifications

General

Brand	GE
Model	489
Category	Relays
Language	English