GE 339

4–4 339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
A1 STATUS CHAPTER 4: ACTUAL VALUES
STARTS/HR INHIBIT
Time in seconds left until the Starts per Hour feature’s inhibit expires. Has a value of zero
if this feature is set to OFF, or if the time has expired.
TIME-BTWN-START
Time in seconds left until the Time Between Starts feature’s inhibit expires. Has a value of
zero if this feature is set to OFF, or if the time has expired.
RESTART INHIBIT
Time in seconds left until the Restart Timer feature’s inhibit expires. Has a value of zero if
this feature is set to OFF, or if the time has expired.
MOTOR LOCKOUT TIME
Displays the longest lockout time among the following 5 timers: THERMAL INHIBIT,
STARTS/HOUR INHIBIT, TIME-BETWEEN-STARTS INHIBIT, RESTART INHIBIT and THREMAL
O/L LOCKOUT.
THERMAL O/L LKT
A thermal overload lockout will occur after a thermal overload trip so that the user
cannot start the motor until the TCU drops to 15%. Following a thermal overload trip, this
value indicates how long it will take for the 339 relay TCU to decrease from the current
value to 15%.
CURRENT UNBALANCE
Displays the current unbalance level as a percentage. Refer to the Current Unbalance
section.
HOTTEST STATOR RTD
Displays the temperature of the hottest Stator RTD.
HOTTEST RTD NO.
Indicates the hottest Stator RTD.
MOTOR RUNNING HOUR
Displays the actual motor running time in hours.
MOTOR STARTS NUM
Displays the actual number of motor starts.
EMERG RESTARTS NUM
Displays the actual number of motor Emergency Restarts.
Figure 4-2: Motor Status logic diagram
CONTACT INPUT
52a Contact Input
SETTINGS
52b Contact Input
SETTING
= Enabled
Enable Two Speed
OPERAND
Motor Online
AND
AND OR
AND
CONTACT INPUT
High Speed Switch
Low Speed Switch
OR
AND
OR
AND
AND
OR
= Enabled
52a Contact
= Enabled
52 b Contact
AND
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