GE 489 - Manual (Page 137)

GE Multilin 489 Generator Management Relay 5-5
5 ACTUAL VALUES 5.2 A1 STATUS
5
Input D ALARM
STATUS: Active
Range: see Input A ALARM STATUS
Input E ALARM
STATUS: Active
Range: see Input A ALARM STATUS
Input F ALARM
STATUS: Active
Range: see Input A ALARM STATUS
Input G ALARM
STATUS: Active
Range: see Input A ALARM STATUS
TACHOMETER
ALARM: 3000 RPM
Range: 0 to 3600 RPM. The current Tachometer
Digital Input value is shown here
OVERCURRENT
ALARM: 10.00 x FLA
Range: 0.00 to 20.00 × FLA
The overcurrent level is shown here.
NEG. SEQ. CURRENT
ALARM: 15% FLA
Range: 0 to 100% FLA. Reflects the present negative-
sequence current level.
GROUND OVERCURRENT
ALARM: 5.00 A
Range: 0.00 to 200000.00 A. Seen only if the GE HGF
CT is used. Reflects the present ground
current level.
GROUND DIRECTIONAL
ALARM: 5.00 A
Range: 0.00 to 200000.00 A
UNDERVOLTAGE ALARM
Vab= 3245 V 78% Rated
Range: 0 to 20000 V; 50 to 99% of Rated. The lowest
phase-to-phase voltage value is shown here
OVERVOLTAGE ALARM
Vab= 4992 V 120% Rated
Range: 0 to 20000 V; 101 to 150% of Rated. The
lowest phase-to-phase voltage is shown here
VOLTS/HERTZ ALARM
PER UNIT V/Hz: 1.15
Range: 0.00 to 2.00. The present V/Hz value is shown
here. Not seen if VT CONNECTION is None.
UNDERFREQUENCY
ALARM: 59.4 Hz
Range: 0.00 to 90.00 Hz
Reflects the present voltage frequency value.
OVERFREQUENCY
ALARM: 60.6 Hz
Range: 0.00 to 90.00 Hz
Reflects the present voltage frequency value.
NEUTRAL O/V (FUND)
ALARM: 0.0 V
Range: 0.0 to 25000.0 V. The present fundamental
neutral voltage value is displayed here.
NEUTRAL U/V (3rd)
ALARM: 0.0 V
Range: 0.0 to 25000.0 V. The present 3rd harmonic
neutral voltage value is displayed here.
REACTIVE POWER Mvar
ALARM: +20.000
Range: –2000.000 to +2000.000 Mvar
The current Mvar value is shown here
REVERSE POWER
ALARM: –20.000 MW
Range: –2000.000 to +2000.000 MW
The current MW value is shown here
LOW FORWARD POWER
ALARM: –20.000 MW
Range: –2000.000 to +2000.000 MW
The current MW value is shown here
STATOR RTD #1
ALARM: 135°C
Range: –50 to +250°C. The present RTD temperature
is shown. Reflects programmed RTD Name.
OPEN SENSOR ALARM:
RTD # 1 2 3 4 5 6 ...
Range: RTDs 1 to 12. Reflects the RTD(s) that caused
the open sensor alarm.
SHORT/LOW TEMP ALARM
RTD # 7 8 9 10 11 ...
Range: RTDs 1 to 12. Reflects the RTD(s) that caused
the short/low temp. alarm.
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