A2 Metering Data; Current Metering - GE 489 Instruction Manual

5 ACTUAL VALUES

5.3A2 METERING DATA

PATH: ACTUAL VALUES A2 METERING DATA

CURRENT METERING

[ENTER] for more
All measured current values are displayed here.
the neutral end CT measurements, and
AMPS
difference between the output side and the neutral end CT measurements on a per phase basis. The 489 negative-
sequence current is defined as the ratio of negative-sequence current to generator rated FLA, I
ator full load amps is calculated as: generator rated MVA / (
measured currents are also shown using Va (wye connection) or Vab (open delta connection) as a zero angle reference
vector. In the absence of a voltage signal (Va or Vab), the IA output current is used as the zero angle reference vector.
GE Multilin
CURRENT METERING
ð
A: 0 B:
ENTER
ð
ESCAPE C: 0 Amps
a: 0 b:
ESCAPE
c: 0 Neut. Amps
MESSAGE
a: 0 b:
ESCAPE
c: 0 Diff. Amps
MESSAGE
AVERAGE PHASE
ESCAPE
CURRENT: 0 Amps
MESSAGE
GENERATOR LOAD:
ESCAPE
0% FLA
MESSAGE
NEGATIVE SEQUENCE
ESCAPE
CURRENT: 0% FLA
MESSAGE
PHASE A CURRENT:
ESCAPE
0 A 0° Lag
MESSAGE
PHASE B CURRENT:
ESCAPE
0 A 0° Lag
MESSAGE
PHASE C CURRENT:
ESCAPE
0 A 0° Lag
MESSAGE
NEUT. END A CURRENT:
ESCAPE
0 A 0° Lag
MESSAGE
NEUT. END B CURRENT:
ESCAPE
0 A 0° Lag
MESSAGE
NEUT. END C CURRENT:
ESCAPE
0 A 0° Lag
MESSAGE
DIFF. A CURRENT:
ESCAPE
0 A 0° Lag
MESSAGE
DIFF. B CURRENT:
ESCAPE
0 A 0° Lag
MESSAGE
DIFF. C CURRENT:
ESCAPE
0 A 0° Lag
MESSAGE
GROUND CURRENT:
ESCAPE
0.0 A 0° Lag
MESSAGE
GROUND CURRENT:
ESCAPE
0.00 A 0° Lag
MESSAGE
A, B, C AMPS
A, B, C DIFF. AMPS
489 Generator Management Relay
Range: 0 to 999999 A
0
Range: 0 to 999999 A
0
Range: 0 to 999999 A
0
Range: 0 to 999999 A
Range: 0 to 2000% FLA
Range: 0 to 2000% FLA
Range: 0 to 999999 A, 0 to 359°
Range: 0 to 999999 A, 0 to 359°
Range: 0 to 999999 A, 0 to 359°
Range: 0 to 999999 A, 0 to 359°
Range: 0 to 999999 A, 0 to 359°
Range: 0 to 999999 A, 0 to 359°
Range: 0 to 999999 A, 0 to 359°
Range: 0 to 999999 A, 0 to 359°
Range: 0 to 999999 A, 0 to 359°
Range: 0.0 to 200000.0 A, 0 to 359°
Seen only if 1 A Ground CT input is used
Range: 0.00 to 100.00 A, 0 to 359°
Seen only if 50:0.025 Ground CT is used
represent the output side CT measurements:
the differential operating current calculated as the vector
× generator phase-phase voltage). Polar coordinates for
3
5.3 A2 METERING DATA
5.3.1 CURRENT METERING
A, B, C NEUT.
/ FLA × 100%. The gener-
2
5-13
5