Multilin 469 Motor Management Relay ... - GE Digital Energy

CHAPTER 5: SETTINGS
The following two figures illustrate the resultant overload protection curves for 80% and
100% line voltage, respectively. For voltages in between, the 469 will shift the acceleration
curve linearly and constantly based on measured line voltage during a motor start.
TIME TO TRIP (SECONDS)
1000
900
800
700
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10
9
8
7
6
5
4
3
2
1
GE Multilin
HIGH INERTIA LOAD OVERLOAD CURVES
8800 HP, 13.2 kV, REACTOR COOLANT PUMP
1 2 3 4 5 6 7 8
MULTIPLES OF FULL LOAD AMPS
806825A4.CDR
FIGURE 5–12: Voltage Dependent Overload Protection at 80% Voltage
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL 5–53