GE Multilin 489 User Manual

5–24 489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
5.4.7 Dual Setpoints
PATH: SETPOINTS ZV S3 DIGITAL INPUTS ZV DUAL SETPOINTS
If an input is assigned to the tachometer function, it may not be used here.
This feature allows for dual settings for the current, voltage, power, RTD, and thermal
model protection elements (setpoint pages S5 to S9). These settings are organized in two
setpoint groups: the main group (Group 1) and the alternate group (Group 2). Only one
group of settings are active in the protection scheme at a time.
When accessing the Group 2 setpoints, the block character (
) for the setpoints menu
header will be replaced by the number two (2) as indicated below.
The following chart illustrates the available Group 2 (alternate group) setpoints

DUAL [Z]
ASSIGN DIGITAL
INPUT: None
Range: None, Input 1, Input 2, Input 3,
Input 4, Input 5, Input 6, Input 7
MESSAGE
ACTIVATE SETPOINT
GROUP: Group 1
Range: Group 1, Group 2
MESSAGE
EDIT SETPOINT
GROUP: Group 1
Range: Group 1, Group 2
2 SETPOINTS [Z]
S5 CURRENT ELEM.
2 SETPOINTS [Z]
S6 VOLTAGE ELEM.
2 SETPOINTS [Z]
S7 POWER ELEMENTS
2 SETPOINTS [Z]
S8 RTD TEMPERA-
TURE
2 SETPOINTS [Z]
S9 THERMAL MODEL
2 OVERCURRENT [Z]
ALARM
2 UNDERVOLTAGE [Z] 2 REACTIVE [Z]
POWER
2 RTD [Z]
TYPES
2 MODEL [Z]
SETUP
2 OFFLINE [Z]
OVERCURRENT
2 OVERVOLTAGE [Z] 2 REVERSE [Z]
POWER
2 RTD #1 [Z] 2 THERMAL [Z]
ELEMENTS
2 INADVERTENT [Z]
ENERGIZATION
2 VOLTS/HERTZ [Z]2 LOW [Z]
FORWARD POWER
↓
2 PHASE [Z]
OVERCURRENT
2 PHASE [Z]
REVERSAL
2 RTD #12 [Z]
2 NEGATIVE [Z]
SEQUENCE
2 UNDERFREQUENCY[Z]2 OPEN[Z]
RTD SENSOR
2 GROUND [Z]
OVERCURRENT
2 OVERFREQUENCY [Z]2 RTD[Z]
SHORT/LOW TEMP
2 PHASE [Z]
DIFFERENTIAL
2 NEUTRAL [Z]
OVERVOLTAGE
(Fund)
2 GROUND [Z]
DIRECTIONAL
2 NEUTRAL U/
V[Z]
(3rd HARMONIC)
2 HIGH-SET [Z]
PHASE OVERCURRENT
2 LOSS [Z]
OF EXCITATION
2 DISTANCE [Z]
ELEMENT
Courtesy of NationalSwitchgear.com

GE Multilin 489 Specifications

General

Brand	GE
Model	Multilin 489
Category	Relays
Language	English