GE Digital Energy 489 Generator Management Relay Multilin

GE Digital Energy 489 Generator Management Relay Multilin

The 489 Generator Management Relay is a microprocessor-based relay designed for the protection and management of
synchronous and induction generators. The 489 is equipped with 6 output relays for trips and alarms. Generator protection,
fault diagnostics, power metering, and RTU functions are integrated into one economical drawout package. The single line
diagram below illustrates the 489 functionality using ANSI (American National Standards Institute) device numbers.

All features of the 489 are standard, there are no options. The phase CT secondaries must be specified at the time of order.
The control power and analog output range must also be specified at the time of order. There are two ground CT inputs:
one for the GE Multilin HGF core balance CT and one for a ground CT with a 1 A secondary (may also be used to accommodate
5 A secondary). The VT inputs accommodate VTs in either a delta or wye configuration. The output relays are
always non-failsafe with the exception of the service relay. The 489PC software is provided with each unit. A metal demo
case may be ordered for demonstration or testing purposes.

Additional 489 accessories are listed below.
• 489PC software: Shipped free with 489
• DEMO: Metal carry case in which 489 unit may be mounted
• SR 19-1 PANEL: Single cutout for 19” panel
• SR 19-2 PANEL: Double cutout for 19” panel
• SCI MODULE: RS232 to RS485 converter box, designed for harsh industrial environments
• Phase CT: 50, 75, 100, 150, 200, 250, 300, 350, 400, 500, 600, 750, 1000 phase CT primaries
• HGF3, HGF5, HGF8: For sensitive ground detection on high resistance grounded systems
• 489 1 3/8” Collar: For shallow switchgear, reduces the depth of the relay by 1 3/8”
• 489 3” Collar: For shallow switchgear, reduces the depth of the relay by 3”

POWER SUPPLY
Options: LO / HI
(must be specified when ordering)
LO Range: DC: 20 to 60 V DC
AC: 20 to 48 V AC at 48 to 62 Hz
HI Range: DC: 90 to 300 V DC
AC: 70 to 265 V AC at 48 to 62 Hz
Power: 45 VA (max), 25 VA typical
Proper operation time without supply voltage: 30 ms
AC ANALOG INPUTS FREQUENCY TRACKING
Frequency Tracking: Va for wye, Vab for open delta
6 V minimum, 10 Hz/sec.
OUTPUT AND NEUTRAL END CURRENT INPUTS
CT Primary: 10 to 50000 A
CT Secondary: 1 A or 5 A (must be specified with order)
Conversion Range: 0.02 to 20 × CT
Accuracy: at < 2 × CT: ±0.5% of 2 × CT
at ≥ 2 × CT: ±1% of 20 × CT
Burden: Less than 0.2 VA at rated load
CT Withstand: 1 second at 80 times rated current
2 seconds at 40 times rated current
continuous at 3 times rated current
GROUND CURRENT INPUT
CT Primary: 10 to 10000 A (1 A / 5 A CTs)
CT Secondary: 1 A / 5 A or 50:0.025 (HGF CTs)
Conversion Range: 0.02 to 20 × CT for 1 A / 5 A CTs
0.0 to 100 A pri. for 50:0.025 CTs (HGF)
50:0.025 CT Accuracy: ± 0.1 A at < 10 A
± 1.0 A at ≥ 10 to 100 A
1 A / 5 A CT Accuracy: at < 2 × CT: ±0.5% of 2 × CT
at ≥ 2 × CT: ±1% of 20 × CT

PHASE VOLTAGE INPUTS
VT Ratio: 1.00 to 240.00:1 in steps of 0.01
VT Secondary: 200 V AC (full-scale)
Conversion Range: 0.02 to 1.00 × Full Scale
Accuracy: ±0.5% of Full Scale
Max. Continuous: 280 V AC
Burden: > 500 KΩ
NEUTRAL VOLTAGE INPUT
VT Ratio: 1.00 to 240.00:1 in steps of 0.01
VT Secondary: 100 V AC (full-scale)
Conversion Range: 0.005 to 1.00 × Full Scale
Accuracy: Fundamental:+/-0.5% of Full Scale
3rd Harmonic at >3V secondary: +/-5%
of reading
3rd Harmonic at < 3V secondary: +/-
0.15% of full scale
Max. Continuous: 280 V AC
DIGITAL INPUTS
Inputs: 9 opto-isolated inputs
External Switch: dry contact < 400 Ω, or open collector
NPN transistor from sensor
6 mA sinking from internal 4K pullup at
24 V DC with Vce < 4 V DC
489 Sensor Supply: 24 V DC at 20 mA max.
RTD INPUTS
RTDs (3 wire type): 100 Ω Platinum (DIN.43760)
100 Ω Nickel, 120 Ω Nickel,
10 Ω Copper
RTD Sensing Current: 5 mA
Isolation: 36 Vpk
(isolated with analog inputs and outputs)
Range: –50 to +250°C
Accuracy: ±2°C for Platinum and Nickel
±5°C for Copper
Lead Resistance: 25 Ω Max per lead
No Sensor: >1 kΩ
Short/Low Alarm: < –50°C
TRIP COIL SUPERVISION
Applicable Voltage: 20 to 300 V DC/AC
Trickle Current: 2 to 5 mA