GE Power Management
489 Generator Management Relay 1-3
1 INTRODUCTION 1.1 OVERVIEW
1
1.1.2 ORDER INFORMATION
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 Power Management 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.
Figure 1–2: 489 ORDER CODES
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”
489
489 Basic unit
P1
P5
Current Transformer Inputs:1ACTSecondaries
Current Transformer Inputs:5ACTSecondaries
LO
HI
DC: 25-60 V; AC: 20-48 V @ 48-62 Hz
DC: 90-300 V; AC: 70-265 V @ 48-62 Hz
A1
A20
0-1 mA analog outputs
4-20 mA analog outputs
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