Ge 489 User Manual download pdf (Page 11)

GE Multilin 489 Generator Management Relay 1-3

1 INTRODUCTION 1.1 OVERVIEW

1.1.2 ORDERING

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 accom-

modate 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.

For example, the 489-P1-LO-A20 code specifies a 489 Generator Management Relay with 1 A CT Inputs, 25 to 60 V DC or

20 to 48 V AC control voltage, and 4 to 20 mA Analog Outputs.

1.1.3 OTHER ACCESSORIES

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”

Table 1–3: 489 ORDER CODES

489 —

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489

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489 Generator Management Relay Base Unit

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Current Transformer Inputs: 1 A CT Secondaries

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Current Transformer Inputs: 5 A CT Secondaries

25 to 60 V DC; 20 to 48 V AC at 48 to 62 Hz

90 to 300 V DC; 70 to 265 V AC at 48 to 62 Hz

A1 0 to 1 mA Analog Outputs

A20 4 to 20 mA Analog Outputs

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 258 259

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Ge 489 User Manual Page 11