Breakers - GE MI-869 Instruction Manual

CHAPTER 5: STATUS
NOTE:

Breakers

869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
ESTIMATED TRIP TIME on OL
Range: 0 to 65000 s in steps of 1
Default: 0 s
The Estimated Time to Trip on OL is displayed when the motor is Starting, Running or in
Overload condition. This value represents the estimated time to trip (in seconds) from the
thermal model assuming that the motor current remains at its current level. It is
obtained from the thermal model curve and takes into account that some percent of the
thermal capacity has already been used. When RTD Bias is enabled, Estimated Trip Time
on OL will take into account biased thermal capacity used.
The Start Inhibit lockout times (four values: Thermal Lockout, Max Start Rate, Time Btwn
Starts, and Restart Delay) are constantly displayed regardless of the motor status. The
times continuously decrease and when any value reaches zero, the respective lockout is
removed.
Thermal Lockout Time
Range: 0 to 65000 s
Max Start Rate LO Time
Range: 0 to 65000 s
Time Btwn Starts LO Time
Range: 0 to 65000 s
Restart Delay LO Time
Range: 0 to 65000 s
Total Motor Lockout Time
Range: 0 to 65000 s
The Total Motor Lockout Time displays the highest value of all calculated Start Inhibit
lockout times: Thermal, Maximum Starting Rate, Time Between Starts and Restart Delay.
Motor Speed
Range: Low Speed, High Speed
Default: Low Speed
The motor is running at high speed when 2-Speed motor protection is employed and the
Speed2 Motor Switch is closed. Otherwise, the motor speed will be determined as Low
Speed.
Motor Running Hours
Range: 0 to 100000 hrs
Motor Running Hours shows the total motor running time.
The status of the breaker/breakers is displayed individually, together with the status of the
Trip and Close coils when set, as well as the data of the Total Arcing current.
Path:
Status > Breaker 1 Status
State
Trip Coil
Close Coil
Total Arcing Current
BREAKERS
5–3