GE 869 Instruction Manual page 583

CHAPTER 7: RECORDS
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
Thermal Capacity Used is the amount of thermal capacity used during starting. A
successful motor start is the one in which the motor reaches the running state. If the
thermal capacity used during starting is relatively consistent, the Learned Start Thermal
Capacity Used value plus suitable margin can be used to manually fine-tune the thermal
start inhibit margin. See the Start Supervision section of the 869 Instruction manual,this
manual, for a description of how the Learned Start Thermal Capacity Used is calculated.
The Learned Start Thermal Capacity Used value must not be used until at least N
successful motor starts have occurred.
LAST ACCELERATION TIME
Range: 0.000 to 250.000 s in steps of 0.001 s
The last acceleration time is measured after a successful motor start.
LAST STARTING CURRENT
Range: 0.00 to 20.00 x FLA in steps of 0.01 x FLA
The last starting current is measured after a successful motor start.
LAST START TCU
Range: 0 to 100% in steps of 1%
The last start thermal capacity used is measured after a successful motor start.
LEARNED AVERAGE LOAD
Range: 0.00 to 20.00 x FLA in steps of 0.01 x FLA
Learned average load is the average motor current, expressed as a multiple of FLA over
a period of time, when the motor status is Running. The period of data window is tAVER,
specified in SETPOINTS > SYSTEM > MOTOR > LOAD AVERAGE CALC. PERIOD. If the run
time of a start/stop sequence is less than t
available samples. The calculation is ignored during motor starting. The data will be
updated every t minutes once the motor status is Running. In the case of two-speed
AVER
motors with different FLA values for the two speeds, the FLA used for each current
sample is the one in effect at the time that sample was taken.
LEARNED AVERAGE kW
Range: 0.0 to 100000.0 kW in steps of 0.1 x kw
Learned average kW is the average motor real power when the motor status is Running.
The period of data window is t
AVERAGE CALC. PERIOD. If the run time of a start/stop sequence is less than t
Learned Average kW averages all available samples. The calculation is ignored during
motor starting. The data will be updated every t
Running.
LEARNED AVERAGE kvar
Range: 0.0 to 100000.0 kvar in steps of 0.1 x kvar
Learned average kvar is the average motor reactive power when the motor status is
Running. The mechanism is the same as the Learned Average kW.
LEARNED AVERAGE PF
Range: -0.99 to 1.00 in steps of 0.01
Learned average PF is the average motor power factor when the motor status is
Running. The mechanism is the same as the Learned Average kW.
AVERAGE RUN TIME (DAYS/HR/MIN)
Range: 0 to 100000 Days; 0 to 23 Hours; 0 to 59 Minutes
The average Run Time of the last N starts at the time the record was saved. If the
amount of minutes exceeds 59, the Average Run Time (Hours) is increased by one, and
this value rolls over to zero and continues. If the amount of hours exceeds 23, the
, the Learned Average Load averages all
AVER
, specified in SETPOINTS > SYSTEM > MOTOR > LOAD
AVER
minutes once the motor status is
AVER
LEARNED DATA
, the
AVER
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