GE Multilin 489 Instruction Manual page 182

Note
Note
5–72
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RTD BIAS CENTER
MESSAGE
POINT: 130°C
RTD BIAS
MESSAGE
MAXIMUM: 155°C
SELECT CURVE STYLE:
MESSAGE
Standard
STANDARD OVERLOAD
MESSAGE
CURVE NUMBER: 4
TIME TO TRIP AT
MESSAGE
1.01 x FLA: 17414.5 s
↓
TIME TO TRIP AT
MESSAGE
20.0 x FLA: 5.6 s
MINIMUM ALLOWABLE
MESSAGE
VOLTAGE: 80%
STALL CURRENT @ MIN
MESSAGE
VOLTAGE: 4.80 x FLA
SAFE STALL TIME @
MESSAGE
MIN VOLTAGE: 20.0 s
ACCEL. INTERSECT @
MESSAGE
MIN VOLT: 3.80 x FLA
STALL CURRENT @ 100%
MESSAGE
VOLTAGE: 6.00 x FLA
SAFE STALL TIME @
MESSAGE
100% VOLTAGE: 10.0 s
ACCEL. INTERSECT @
MESSAGE
100% VOLT: 5.00 x FLA
The ,
RTD BIAS MINIMUM RTD BIAS CENTER
only if is set to "Yes".
ENABLE RTD BIASING
The
STANDARD OVERLOAD CURVE NUMBER
"Standard". If the
SELECT CURVE STYLE
after the
STANDARD OVERLOAD CURVE NUMBER
set to "Custom", the setpoints shown after
The current measured at the output CTs is used for the thermal model. The thermal model
consists of five key elements: the overload curve and overload pickup level, the unbalance
biasing of the generator current while the machine is running, the cooling time constants,
and the biasing of the thermal model based on hot/cold generator information and
measured stator temperature. Each of these elements are described in detail in the
sections that follow.
CHAPTER 5: SETPOINTS
Range: 0 to 250°C in steps of 1
Range: 0 to 250°C in steps of 1
Range: Standard, Custom, Voltage
Dependent
Range: 1 to 15 in steps of 1. See Note
below.
Range: 0.5 to 99999.9 in steps of 0.1.
See Notes below.
Range: 0.5 to 99999.9 in steps of 0.1.
See Notes below.
Range: 70 to 95% in steps of 1. See
Notes below.
Range: 2.00 to 15.00 × FLA in steps of
0.01. See Notes below.
Range: 0.5 to 999.9 in steps of 0.1. See
Notes below.
Range: 2.00 to
VOLTAGE
Notes below.
Range: 2.00 to 15.00 × FLA in steps of
0.01. See Note below.
Range: 0.5 to 999.9 in steps of 0.1. See
Notes below.
Range: 2.00 to
VOLTAGE
Notes below.
, and
RTD BIAS MAXIMUM
is seen only if
SELECT CURVE STYLE
is set to "Voltage Dependent", all setpoints shown
are displayed. If the
TIME TO TRIP AT 20.0 X FLA
489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL
STALL CURRENT @ MIN
in steps of 0.01. See
STALL CURRENT @ 100%
in steps of 0.01. See
setpoints is are seen
is set to
is
SELECT CURVE STYLE
are not displayed.