QOP-2 tripped and target can be reset
Action to be taken
a) Check for any smoke, burning smell, flash/weld or any abnormality in transformer terminals, RC damping panel,RSI-2,SL-2 (L4, L5, L6 J2, CTF-2,QD2 in BA2 panel),Traction Motors 4, 5, 6, U5, U6, A4, (CTF3, Q20 and C145 in BA3 panel), SJ and ammeter shunt. If everything is normal reset the relay target, and resume traction. If anything found abnormal, isolate the same and work. b) If QOP-2 trips further after long interval, every time check the equipment mentioned above. If no abnormality, reset the target and resume traction.
c) If QOP-2 trips frequently, isolate TM 4, reset QOP 2, close DJ and resume traction. If QOP2 trips again, isolate TM5 and TM6 one by one and try. If QOP-2 is not tripping when HMCS-2 in 2or 3 or 4 continue traction with traction motor in isolated condition and work with 5/6th of maximum permissible load. e) If QOP-2 trips in all positions of HMCS-2, normalize HMCS2 to 1 position and place HQOP-2 in OFF position, reset target, resume traction and follow the precautions.(refer 2.11) . f) If DJ trips again through QOP2 keep HOBA also in off, along with HQOP 2 reset the relay target and resume traction. Check the traction motors for any banding failure at every stoppage.
NOTE: If relay QOP-1 or QOP-2 trips even after placing HQOP-1 or HQOP-2 in OFF, place HOBA in OFF position along with HQOP-1 or HQOP-2. Do not use RB if QOP-1/ QOP-2 tripping during RB.
Action to be taken
a) Check for any smoke, burning smell, flash/weld or any abnormality in transformer terminals, RC damping panel,RSI-2,SL-2 (L4, L5, L6 J2, CTF-2,QD2 in BA2 panel),Traction Motors 4, 5, 6, U5, U6, A4, (CTF3, Q20 and C145 in BA3 panel), SJ and ammeter shunt. If everything is normal reset the relay target, and resume traction. If anything found abnormal, isolate the same and work. b) If QOP-2 trips further after long interval, every time check the equipment mentioned above. If no abnormality, reset the target and resume traction.
c) If QOP-2 trips frequently, isolate TM 4, reset QOP 2, close DJ and resume traction. If QOP2 trips again, isolate TM5 and TM6 one by one and try. If QOP-2 is not tripping when HMCS-2 in 2or 3 or 4 continue traction with traction motor in isolated condition and work with 5/6th of maximum permissible load. e) If QOP-2 trips in all positions of HMCS-2, normalize HMCS2 to 1 position and place HQOP-2 in OFF position, reset target, resume traction and follow the precautions.(refer 2.11) . f) If DJ trips again through QOP2 keep HOBA also in off, along with HQOP 2 reset the relay target and resume traction. Check the traction motors for any banding failure at every stoppage.
NOTE: If relay QOP-1 or QOP-2 trips even after placing HQOP-1 or HQOP-2 in OFF, place HOBA in OFF position along with HQOP-1 or HQOP-2. Do not use RB if QOP-1/ QOP-2 tripping during RB.
