Ge 489 User Manual download pdf (Page 12)

1-4 489 Generator Management Relay GE Multilin

1.2 SPECIFICATIONS 1 INTRODUCTION

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

≥ 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

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

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 258 259

Comments to this Manuals

No comments

Ge 489 User Manual Page 12

Comments to this Manuals

Related products and manuals for Generators Ge 489