6–22
489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 6: ACTUAL VALUES
6.4
A3 Learned Data
6.4.1
Parameter Averages
PATH: ACTUAL VALUES
ZV
A3 LEARNED DATA
Z
PARAMETER AVERAGES
The 489 calculates the average magnitude of several parameters over a period of time.
This time is specified by
S1 489 SETUP
ZV
PREFERENCES
ZV
PARAMETER AVERAGES CALC.
PERIOD
setpoint (default 15 minutes). The calculation is a sliding window 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.
6.4.2
RTD Maximums
PATH: ACTUAL VALUES
ZV
A3 LEARNED DATA
ZV
RTD MAXIMUMS
PARAMETER
[
Z
]
AVERAGES
AVERAGE GENERATOR
LOAD: 100% FLA
Range: 0 to 2000% FLA
MESSAGE
AVERAGE NEG. SEQ.
CURRENT: 0% FLA
Range: 0 to 2000% FLA
MESSAGE
AVERAGE PHASE-PHASE
VOLTAGE:
0 V
Range: 0 to 50000 V. Not seen if
VT
CONNECTION
is “None”
RTD
[
Z
]
RTD #1
MAX. TEMP.: 40°C
Range: –50 to 250°C
MESSAGE
RTD #2
MAX. TEMP.: 40°C
Range: –50 to 250°C
MESSAGE
RTD #3
MAX. TEMP.: 40°C
Range: –50 to 250°C
MESSAGE
RTD #4
MAX. TEMP.: 40°C
Range: –50 to 250°C
MESSAGE
RTD #5
MAX. TEMP.: 40°C
Range: –50 to 250°C
MESSAGE
RTD #6
MAX. TEMP.: 40°C
Range: –50 to 250°C
MESSAGE
RTD #7
MAX. TEMP.: 40°C
Range: –50 to 250°C
MESSAGE
RTD #8
MAX. TEMP.: 40°C
Range: –50 to 250°C
MESSAGE
RTD #9
MAX. TEMP.: 40°C
Range: –50 to 250°C
MESSAGE
RTD #10
MAX. TEMP.: 40°C
Range: –50 to 250°C
