QOA trips target can be reset
Action to be taken
a) Check the auxiliary power circuit equipment - all EM contactors, line voltmeters, cab 2 switch panel, Q30, cab heaters, cab AC, Notch repeater, C118, R118, ARNO, CHBA, TFVT, HVSI-1, HVSI- 2, all auxiliary motors a0, a1 for any smoke, burning smell, fire, high temperature or any abnormality. If anything found abnormal, try to isolate that equipment and resume traction accordingly.
b) If everything is normal, reset the relay target and resume traction.
c) If QOA trips after long interval check the auxiliary power circuit every time for any abnormality and if everything is normal, reset the relay target and resume traction.
If QOA trips frequently, try to identify the occasion of QOA tripping.
1. If QOA trips while closing DJ, check ARNO, a0 a1, MVSI-1, MVSI-2, MVSL-1, MVSL2, MPH, HVSI-1, HVSI-2, HVSL-1, HVSL-2, HPH, C118, R118, CHBA, Q30 and UA meters for any abnormality. If any abnormality noticed, try to isolate and work accordingly.
2. If QOA trips while closing BLCP, check MCPs and C101, C102, C103 for any abnormality.
3. If QOA trips while closing BLVMT, check MVRH, MVMT-1, MVMT-2 and contactors C105, C106, C107 for any abnormality.
4. If unable to identify, place HQOA on 0 position and resume traction duly observing the instructions.
Action to be taken
a) Check the auxiliary power circuit equipment - all EM contactors, line voltmeters, cab 2 switch panel, Q30, cab heaters, cab AC, Notch repeater, C118, R118, ARNO, CHBA, TFVT, HVSI-1, HVSI- 2, all auxiliary motors a0, a1 for any smoke, burning smell, fire, high temperature or any abnormality. If anything found abnormal, try to isolate that equipment and resume traction accordingly.
b) If everything is normal, reset the relay target and resume traction.
c) If QOA trips after long interval check the auxiliary power circuit every time for any abnormality and if everything is normal, reset the relay target and resume traction.
If QOA trips frequently, try to identify the occasion of QOA tripping.
1. If QOA trips while closing DJ, check ARNO, a0 a1, MVSI-1, MVSI-2, MVSL-1, MVSL2, MPH, HVSI-1, HVSI-2, HVSL-1, HVSL-2, HPH, C118, R118, CHBA, Q30 and UA meters for any abnormality. If any abnormality noticed, try to isolate and work accordingly.
2. If QOA trips while closing BLCP, check MCPs and C101, C102, C103 for any abnormality.
3. If QOA trips while closing BLVMT, check MVRH, MVMT-1, MVMT-2 and contactors C105, C106, C107 for any abnormality.
4. If unable to identify, place HQOA on 0 position and resume traction duly observing the instructions.
