CHAPTER 2: INTRODUCTION
489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL
2–5
For example, the 489-P1-LO-A20-E 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, 4 to 20 mA analog
outputs, and an enhanced display.
2.1.3
Other Accessories
Additional 489 accessories are listed below.
•
EnerVista 489 Setup software:
no-charge software provided with the 489
•
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-inch Collar:
For shallow switchgear, reduces the depth of the relay by 1
3/8 inches
•
489 3-inch Collar:
For shallow switchgear, reduces the depth of the relay by 3
inches
Table 2–3: 489 Order Codes
489 – * – * – * – * – *
Base unit
489
|
|
|
|
|
489 Generator Management Relay
Phase current inputs
P1
|
|
|
|
1 A phase CT secondaries
P5
|
|
|
|
5 A phase CT secondaries
Control power
LO
|
|
|
|
|
|
20 to 60 V DC;
20 to 48 V AC at 48 to 62 Hz
HI
|
|
|
|
|
|
90 to 300 V DC;
70 to 265 V AC at 48 to 62 Hz
Analog outputs
A1
|
|
0 to 1 mA analog outputs
A20
|
|
4 to 20 mA analog outputs
Display
|
|
Basic display
E
|
Enhanced display, larger LCD
T
|
Enhanced with Ethernet (10Base-T)
Harsh environment
H
Harsh (chemical) environment conformal
coating