GE Multilin 489 User Manual

CHAPTER 1: GETTING STARTED
489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL 1–13
To set the ground CT ratio, modify the S2 SYSTEM SETUP Z CURRENT SENSING ZV GROUND
CT RATIO
setpoint as shown below.
Z Press the
MENU key until the relay displays the setpoints menu header.
To set the VT connection type and ratings, modify the
S2 SYSTEM SETUP ZV VOLTAGE
SENSING ZV VT CONNECTION TYPE and the S2 SYSTEM SETUP ZV VOLTAGE SENSING ZV
VOLTAGE TRANSFORMER RATIO setpoints as shown below.
Z Press the
MENU key until the relay displays the setpoints menu header.
 SETPOINTS [Z]
Press MESSAGE X or ENTER
 SETPOINTS [Z]
S1 489 SETUP
Press MESSAGE T

SETPOINTS [Z]
S2 SYSTEM SETUP
Press
MESSAGE X
or ENTER
 CURRENT [Z]
SENSING
Press
MESSAGE X
or ENTER
PHASE CT PRIMARY:
600 A
Press
MESSAGE T
GROUND CT:
1 A Secondary
Press
MESSAGE T
GROUND CT RATIO:
100: 1
Press the VA L U E keys until 200: 1 is displayed,
or enter the value directly via the numeric
keypad.
GROUND CT RATIO:
200: 1
Press the ENTER key to store the setpoint.
NEW SETPOINT HAS
BEEN STORED
 SETPOINTS [Z]
Press MESSAGE X or ENTER
 SETPOINTS [Z]
S1 489 SETUP
Press MESSAGE T

SETPOINTS [Z]
S2 SYSTEM SETUP
Press
MESSAGE X
or
ENTER
 CURRENT [Z]
SENSING
Press
MESSAGE T

VOLTAGE [Z]
SENSING
Press
MESSAGE X
or
ENTER
VT CONNECTION TYPE:
None
Press the VA L U E keys until
“Open Delta” is displayed.
VT CONNECTION TYPE:
Open Delta
Press the ENTER key to store the setpoint.
NEW SETPOINT HAS
BEEN STORED
Press
MESSAGE T
VOLTAGE TRANSFORMER
RATIO: 5.00: 1
Courtesy of NationalSwitchgear.com

GE Multilin 489 Specifications

General

Brand	GE
Model	Multilin 489
Category	Relays
Language	English