GE 469 Instruction Manual page 81

4 SETPOINTS
The overload curve accounts for motor heating during stall, acceleration, and running in both the stator and the rotor. The
OVERLOAD PICKUP LEVEL
tion. This is useful for service factor motors as it allows the pickup level to be defined. The curve is effectively cut off at cur-
rent values below this pickup.
Motor thermal limits consist of three distinct parts based on the three conditions of operation: locked rotor or stall, accelera-
tion, and running overload. Each of these curves may be provided for a hot and a cold motor. A hot motor is defined as one
that has been running for a period of time at full load such that the stator and rotor temperatures have settled at their rated
temperature. A cold motor is a motor that has been stopped for a period of time such that the stator and rotor temperatures
GE Multilin
Courtesy of NationalSwitchgear.com
TIME TO TRIP AT
ESCAPE
MESSAGE 4.75 x FLA: 16.2 s
TIME TO TRIP AT
ESCAPE
5.00 x FLA: 14.6 s
MESSAGE
TIME TO TRIP AT
ESCAPE
5.50 x FLA: 12.0 s
MESSAGE
TIME TO TRIP AT
ESCAPE
6.00 x FLA: 10.0 s
MESSAGE
TIME TO TRIP AT
ESCAPE
6.50 x FLA: 8.5 s
MESSAGE
TIME TO TRIP AT
ESCAPE
7.00 x FLA: 7.3 s
MESSAGE
TIME TO TRIP AT
ESCAPE
7.50 x FLA: 6.3 s
MESSAGE
TIME TO TRIP AT
ESCAPE
MESSAGE 8.00 x FLA: 5.6 s
TIME TO TRIP AT
ESCAPE
10.0 x FLA: 5.6 s
MESSAGE
TIME TO TRIP AT
ESCAPE
15.0 x FLA: 5.6 s
MESSAGE
TIME TO TRIP AT
ESCAPE
20.0 x FLA: 5.6 s
MESSAGE
MINIMUM ALLOWABLE
ESCAPE
LINE VOLTAGE: 80%
MESSAGE
STALL CURRENT @ MIN
ESCAPE
Vline: 4.80 x FLA
MESSAGE
SAFE STALL TIME @
ESCAPE
MIN Vline: 20.0 s
MESSAGE
ACCEL. INTERSECT @
ESCAPE
MESSAGE MIN Vline: 3.80 x FLA
STALL CURRENT @ 100%
ESCAPE
Vline: 6.00 x FLA
MESSAGE
SAFE STALL TIME @
ESCAPE
100% Vline: 10.0 s
MESSAGE
ACCEL. INTERSECT @
ESCAPE
100% Vline: 5.00 x FLA
MESSAGE
setpoint dictates where the running overload curve begins as the motor enters an overload condi-
469 Motor Management Relay
4.6 S5 THERMAL MODEL
Range: 0.5 to 99999.9 s in steps of 0.1. Cannot be
altered if
SELECT CURVE STYLE
Range: 0.5 to 99999.9 s in steps of 0.1. Cannot be
altered if SELECT CURVE STYLE
Range: 0.5 to 99999.9 s in steps of 0.1. Cannot be
altered if
SELECT CURVE STYLE
Range: 0.5 to 99999.9 s in steps of 0.1. Cannot be
altered if SELECT CURVE STYLE
Range: 0.5 to 99999.9 s in steps of 0.1. Cannot be
altered if SELECT CURVE STYLE
Range: 0.5 to 99999.9 s in steps of 0.1. Cannot be
altered if SELECT CURVE STYLE
Range: 0.5 to 99999.9 s in steps of 0.1. Cannot be
altered if SELECT CURVE STYLE
Range: 0.5 to 99999.9 s in steps of 0.1. Cannot be
altered if
SELECT CURVE STYLE
Range: 0.5 to 99999.9 s in steps of 0.1. Cannot be
altered if SELECT CURVE STYLE
Range: 0.5 to 99999.9 s in steps of 0.1. Cannot be
altered if
SELECT CURVE STYLE
Range: 0.5 to 99999.9 s in steps of 0.1. Cannot be
altered if SELECT CURVE STYLE
Range: 70 to 95% in steps of 1. Seen only if
CURVE STYLE is "Voltage Dependent" .
Range: 2.00 to 15.00 x FLA in steps of 0.01. Seen only if
SELECT CURVE STYLE
Range: 0.5 to 999.9 s in steps of 0.1. Seen only if
SELECT CURVE STYLE
Range: 2.00 to STALL CURRENT @ MIN Vline
steps of 0.01. Seen only if
STYLE is "Voltage Dependent"
Range: 2.00 to 15.00 x FLA in steps of 0.01. Seen only if
SELECT CURVE STYLE
Range: 0.5 to 999.9 s in steps of 0.1. Seen only if
SELECT CURVE STYLE
Range: 2.00 to STALL CURRENT @ MIN Vline
steps of 0.01. Seen only if
STYLE is "Voltage Dependent"
is "Standard" .
is "Standard" .
is "Standard" .
is "Standard" .
is "Standard" .
is "Standard" .
is "Standard" .
4
is "Standard" .
is "Standard" .
is "Standard" .
is "Standard" .
SELECT
is Voltage Dependent.
is Voltage Dependent.
value in
SELECT CURVE
is Voltage Dependent.
is Voltage Dependent .
value in
SELECT CURVE
4-31