GE M60 UR Series

5-162 M60 Motor Protection System GE Multilin
5.6 GROUPED ELEMENTS 5 SETTINGS
5
Figure 5–70: THERMAL MODEL LOGIC
833007A4.CDR
SETTING
SETTING
SETTING
SETTING
FLEXLOGIC OPERANDS
FLEXLOGIC OPERAND
FLEXLOGIC OPERAND
MOTOR STATUS
ACTUAL VALUE
ACTUAL VALUE
THERMAL MODEL
FUNCTION:
TC USED MARGIN:
THERMAL MODEL
BLOCK :
EMERGENCY
RESTART:
MOTOR THERMAL PKP
MOTOR RUNNING
MOTOR OFFLINE
MOTOR START INHIBIT
MOTOR THERMAL OP
ACTUAL VALUES
MOTOR THERMAL DPO
MOTOR OVERL
OAD
MOTOR STARTING
TC used 100%
5 STARTS History Available
RTD TC used 100%
MOTOR LINE
SOURCE:
STATOR TEMP SENSOR 1
STATOR TEMP SENSOR 2
STATOR TEMP SENSOR 3
STATOR TEMP SENSOR 4
STATOR TEMP SENSOR 5
STATOR TE
MP SENSOR 6
COOL TIME CONSTANT
RUNNING:
RTD BIAS CENTER
POINT:
THERMAL MODEL
TD MULTIPLIER:
RTD BIAS
MINIMUM:
THERMAL MODEL
CURVE:
RTD BIAS:
IA RMS
IB RMS
IC RMS
Pos Seq I
Neg Seq I
Off=0
Off=0
E
nabled=1
TCU Margin > 0%
TCU Margin = 0%
AND
AND
AND
AND
AND
AND
AND
OR
COOL TIME CONSTANT
STOPPED:
RTD BIAS
MAXIMUM:
TCU MARGIN:
TCU MARGIN(%)+100%
100%
( )
TC Used on Start=TC Start x
MAX
TC Used on START< TC available
TC Used > 15%TC Used > 15%
THERMAL MEMORY
RUN
TCU
START INHIBIT
THERM MOD OP
100% Stop
Stop
TC Used
on START
TC used =
TC used RTD=
t
TC
Reset TC Used To 0%
I
MAX STATOR
Hottest RTD
I PICKUP
Eq
SETTINGS
R
S
OR
OR