Power Supply - GE Multilin 489 Instruction Manual

CHAPTER 2: INTRODUCTION
2.2.6

Power Supply

489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL
Courtesy of NationalSwitchgear.com
POWER METERING
Range: -2000.000 to 2000.000 MW,
–2000.000 to 2000.000 Mvar,
0 to 2000.000 MVA
Accuracy at I < 2 × CT:
±1% of
avg
> 2 × CT:
Accuracy at I
±1.5% of
avg
REACTIVE POWER
Block from online: 0 to 5000 s in steps of 1
Pickup level: 0.02 to 1.50 × rated Mvar
(positive and negative)
Time delay: 0.2 to 120.0 s in steps of 0.1
Pickup accuracy: see power metering
Timing accuracy: ±100ms or ±0.5% of total time
Elements: Trip and Alarm
REVERSE POWER
Block from online: 0 to 5000 s in steps of 1
Pickup level: 0.02 to 0.99 × rated MW
Time delay: 0.2 to 120.0 s in steps of 0.1
Pickup accuracy: see power metering
Timing accuracy: ±100 ms or ±0.5% of total time
Elements: Trip and Alarm
TRIP COIL SUPERVISION
Applicable voltage: 20 to 300 V DC/AC
Trickle current: 2 to 5 mA
CONTROL POWER
Options: LO / HI (specify with order)
LO range: 20 to 60 V DC
20 to 48 V AC at 48 to 62 Hz
HI range: 90 to 300 V DC
70 to 265 V AC at 48 to 62 Hz
Power: 45 VA (max.), 25 VA typical
Total loss of voltage ride through time (0% control power): 16.7 ms
It is recommended that the 489 be powered up at least once per year to prevent
deterioration of electrolytic capacitors in the power supply.
FUSE
Current rating: 2.5 A
Type: 5x20mm HRC SLO-BLO Littelfuse
Model: 215-02.5
An external fuse must be used if the supply voltage exceeds 250 V
3
× 2 × CT × VT × VT
ratio full-scale
3 × 20 × CT × VT × VT
ratio full-scale
2–13