4-40
469 Motor Management Relay
GE Power Management
4.6 S5 THERMAL MODEL
4 SETPOINT PROGRAMMING
4
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.
Figure 4–14: VOLTAGE DEPENDENT OVERLOAD PROTECTION AT 80% V
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100
HIGH INERTIA LOAD OVERLOAD CURVES
8800 HP, 13.2 kV, REACTOR COOLANT PUMP
TIME
T
O
TRIP
(SECONDS)
MULTIPLES OF FULL LOAD AMPS
200
300
400
500
600
700
800
900
1000
806825A3.CDR
806825A3.CDR
GE Power Management
GE Power Management
Содержание MOTOR MANAGEMENT RELAY 469
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