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1-4 489 Generator Management Relay GE Multilin
1.2 SPECIFICATIONS 1 INTRODUCTION
1
1.2SPECIFICATIONS 1.2.1 489 SPECIFICATIONS
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
GROUND CT BURDEN
GROUND CT CURRENT WITHSTAND (SECONDARY)
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
ANALOG CURRENT INPUTS
Current Inputs: 0 to 1 mA, 0 to 20 mA, 4 to 20mA
(setpoint)
Input Impedance: 226 Ω ±10%
Conversion Range: 0 to 2 mA
Accuracy: ±1% of full scale
Type: Passive
Analog Input Supply: +24 V DC at 100 mA max.
Sampling Interval: 50 ms
COMMUNICATIONS PORTS
RS232 Port: 1, Front Panel, non-isolated
RS485 Ports: 2, Isolated together at 36 Vpk
GROUND
CT
INPUT BURDEN
VA Ω
1 A / 5 A 1 A 0.024 0.024
5 A 0.605 0.024
20 A 9.809 0.024
50:0.025
HGF
0.025 A 0.057 90.7
0.1 A 0.634 90.7
0.5 A 18.9 75.6
GROUND CT WITHSTAND TIME
1 SEC. 2 SEC. CONTINUOUS
1A / 5A 80× CT 40 × CT 3 × CT
50:0.025 HGF N/A N/A 150 mA