Model Setup - GE Multilin 489 Instruction Manual

CHAPTER 5: SETPOINTS

5.10.2 Model Setup

1 MODEL SETUP
489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL
Courtesy of NationalSwitchgear.com
400
HIGH
300
INERTIA
MOTOR
200
100
80
60
40
20
10
8
6
4
E,F, AND G ARE THE
SAFE STALL THERMAL LIMIT
TIMES AT 100%, 90%, AND
2
80%VOLTAGE, REPECTIVELY
1
0 100
FIGURE 5–14: Typical Time-Current and Thermal Limit Curves
Setpoints
PATH: SETPOINTS S9 THERMAL MODEL
[ ] ENABLE THERMAL
MODEL: No
OVERLOAD PICKUP
MESSAGE
LEVEL: 1.01 x FLA
UNBALANCE BIAS
MESSAGE
K FACTOR: 0
COOL TIME CONSTANT
MESSAGE
ONLINE: 15 min.
COOL TIME CONSTANT
MESSAGE
OFFLINE: 30 min.
HOT/COLD SAFE
MESSAGE
STALL RATIO: 1.00
ENABLE RTD
MESSAGE
BIASING: No
RTD BIAS
MESSAGE
MINIMUM: 40°C
RUNNING OVERLOAD
A,B,AND C ARE THE
ACCELERATION THERMAL LIMIT
CURVES AT 100%, 90%, AND
80%VOLTAGE, REPECTIVELY
C
B
A
G
F
200 300 400 500 600
(ANSI/IEEE C37.96)
MODEL SETUP
Range: No, Yes
Range: 1.01 to 1.25 × FLA in steps of
Range: 0 to 12 in steps of 1. A value of
Range: 0 to 500 min. in steps of 1
Range: 0 to 500 min. in steps of 1
Range: 0.01 to 1.00 in steps of 0.01
Range: No, Yes
Range: 0 to 250°C in steps of 1
E
% CURRENT
806827A1.CDR
0.01
"0" disables this feature
5–71