Operation - II
ABNORMAL SIGN:
After taking 6th notch DJ trips after 5.6 seconds.
CAUSES:
1. C107, C105 and C106 are not closed.
2. C107 or C105 or C106 is not closed.
3. Both C105 and C106 are not closed due to QTD 105 defective.
4. All EM contactors are not closed due to CCA melted or Q100 not energized.
5. C107, C105 & C106 closed but their N/O interlocks are defective.
Troubleshooting
C107, C105 and C106 are not closed
a) If C107, C105 andC106 and are not closing, take one notch and see whether the contactors are closing (in Arno locos). If successful, resume traction. b) If C107, C105 andC106 not closing, ensure HVRH, HVMT-1 and HVMT-2 in 1 position. If the switches are in 1 position, place them in position 3, close BLVMT and try.
c) If unsuccessful, inform TLC, if load and road permits clear section within 5 notches or wedge Q118 in energized condition with starting and continuous current of 500/500 amps.
C107 or C105 or C106 not closed.
If C107 alone not closed
a) Ensure HVRH in 1 position. Change to 3rd position and try. If C107 is closed, work further and frequently check working of MVRH.
b) If C107 is not closed, retain HVRH on 3rd position ,open DJ, switch off HBA and wedge C107 and follow wedging precautions.
C105 alone not closed
a) Ensure HVMT 1 in 1 position. Change to 3rd position and try. If C105 is closed, work further and frequently check working of MVMT 1.
b) If C105 is not closed, retain HVMT 1 on 3rd position, open DJ, switch off HBA and wedge C105 and follow wedging precautions.
C106 alone not closed
a) Ensure HVMT 2 in 1 position. Change to 3rd position and try. If C106 is closed, work further and frequently check working of MVMT 2.
b) If C106 is not closed, gently tap QTD106 and try.
c) If C106 is not closed, retain HVMT 2 on 3rd position open DJ, switch off HBA and wedge C105 and follow wedging precautions.
C105 and C106 both are not closed
a) If C105 and C106 both are not closed, gently tap QTD105 and try.
b) If unsuccessful, open DJ, switch off HBA, keep HVMT-1 on 3rd position and wedge C105 with precautions and check whether C106 is closed. If closed, resume traction duly watching the working of MVMT-1 on run.
c) If C106 is not closed, tap QTD 106 and place HVMT-2 in 3rd position and try, if still not closed, isolate RSI-2 block by keeping HVSI-2, HVMT-2 & HVSL-2 on ‘0’ and work with 50% of maximum permissible load with normal current ratings.
Before wedging EM contactor, trip DJ, lower pantograph, switch OFF HBA and ensure its switch in 3rd position
All EM contactors are not closed
a) Check B conk provided below switch panel in cab 2 is properly fixed.
b) Check the relay Q100/QTD100.If not energized, check CCA. If CCA intact,
c) Wedge Q100/QTD100 in energized condition and resume traction.
d) If Q100/QTD100 is wedged, switch ON BLCP, BLVMT 5 seconds after extinguishing of LSCHBA.
Note: In some loco when Q100 is wedged, if DJ trips, while reclosing ICDJ will experience due to C107, C105, and C106 in closed condition. Switch off HBA and ON and then reclose DJ.
e) If CCA melted, follow the procedure given below.
Note. In FDCS loco place HOBA in off position and try.
ABNORMAL SIGN:
After taking 6th notch DJ trips after 5.6 seconds.
CAUSES:
1. C107, C105 and C106 are not closed.
2. C107 or C105 or C106 is not closed.
3. Both C105 and C106 are not closed due to QTD 105 defective.
4. All EM contactors are not closed due to CCA melted or Q100 not energized.
5. C107, C105 & C106 closed but their N/O interlocks are defective.
Troubleshooting
C107, C105 and C106 are not closed
a) If C107, C105 andC106 and are not closing, take one notch and see whether the contactors are closing (in Arno locos). If successful, resume traction. b) If C107, C105 andC106 not closing, ensure HVRH, HVMT-1 and HVMT-2 in 1 position. If the switches are in 1 position, place them in position 3, close BLVMT and try.
c) If unsuccessful, inform TLC, if load and road permits clear section within 5 notches or wedge Q118 in energized condition with starting and continuous current of 500/500 amps.
C107 or C105 or C106 not closed.
If C107 alone not closed
a) Ensure HVRH in 1 position. Change to 3rd position and try. If C107 is closed, work further and frequently check working of MVRH.
b) If C107 is not closed, retain HVRH on 3rd position ,open DJ, switch off HBA and wedge C107 and follow wedging precautions.
C105 alone not closed
a) Ensure HVMT 1 in 1 position. Change to 3rd position and try. If C105 is closed, work further and frequently check working of MVMT 1.
b) If C105 is not closed, retain HVMT 1 on 3rd position, open DJ, switch off HBA and wedge C105 and follow wedging precautions.
C106 alone not closed
a) Ensure HVMT 2 in 1 position. Change to 3rd position and try. If C106 is closed, work further and frequently check working of MVMT 2.
b) If C106 is not closed, gently tap QTD106 and try.
c) If C106 is not closed, retain HVMT 2 on 3rd position open DJ, switch off HBA and wedge C105 and follow wedging precautions.
C105 and C106 both are not closed
a) If C105 and C106 both are not closed, gently tap QTD105 and try.
b) If unsuccessful, open DJ, switch off HBA, keep HVMT-1 on 3rd position and wedge C105 with precautions and check whether C106 is closed. If closed, resume traction duly watching the working of MVMT-1 on run.
c) If C106 is not closed, tap QTD 106 and place HVMT-2 in 3rd position and try, if still not closed, isolate RSI-2 block by keeping HVSI-2, HVMT-2 & HVSL-2 on ‘0’ and work with 50% of maximum permissible load with normal current ratings.
Before wedging EM contactor, trip DJ, lower pantograph, switch OFF HBA and ensure its switch in 3rd position
All EM contactors are not closed
a) Check B conk provided below switch panel in cab 2 is properly fixed.
b) Check the relay Q100/QTD100.If not energized, check CCA. If CCA intact,
c) Wedge Q100/QTD100 in energized condition and resume traction.
d) If Q100/QTD100 is wedged, switch ON BLCP, BLVMT 5 seconds after extinguishing of LSCHBA.
Note: In some loco when Q100 is wedged, if DJ trips, while reclosing ICDJ will experience due to C107, C105, and C106 in closed condition. Switch off HBA and ON and then reclose DJ.
e) If CCA melted, follow the procedure given below.
Note. In FDCS loco place HOBA in off position and try.
