Fault No: F0105P1 Tranformer Oil Temperature or Presure Not Ok



The “F0105P1” alert signifies as abnormality in Tranformer Oil Temperature or Pressure, which will directly cause a Reduced TE/BE and VCB will trip. If VCB trips, try to close it again.

⚠️Effects of this fault are:

  • Reduction in TE/BE
  • GTO pulsing will stop
  • Hotel load will off
  • VCB will trip

LSFI will start blinking & BPFA will glow.

Possibility of Reduced TE/BE, GTO pulsing will stop. Hotel load will off and VCB will trip.

  • “If TE is still available”, then try to clear the block section by Traction.
    • “If VCB trips”:
      • Immediately Bring the throttle to “0” position then Acknowledge fault by pressing “BPFA” button.
      • After that Try to Close “VCB” and try to clear the block section by coasting.
  • ✅Check Transformer Oil Pump (TFP):
    • Manually feel the “inlet/outlet pipes” of under the frame for vibrations/warmth. which indicate the is working.
  • ✅Check MCB’s in cubicles:
    • MCB 62.1/1 in HB-1
    • MCB 62.1/2 in HB-2
  • ❌If found tripped,
    • then open VCB and reset MCB once.
  • If MPH not working:
    • Then Switch OFF and ON MCE.
    • Keep loco in idle mode for 10 minutes.
Transformer Oil Level: Fault No: F0105P1 Tranformer Oil Temperature or Presure Not Ok
  • ✅Ensure Transformer Oil Level:
    • Check/ensure the oil level in both the “expansion tanks” of transformer in Machine Room and Oil level should always be “between the Max. & Min Mark”.
  • ✅Check working of (OCB) Oil Cooler Blower in the machine room then
  • If OCB is not working then CHECK/ensure that
    • MCB 59.1/1 in HB-1
    • MCB 59.1/2 in HB-2
  • If found tripped:
    • Then Open VCB & Reset MCB only once.
  • If OCB’s are still not working,
    • Then Switch OFF and ON MCE.
Fault No: F0105P1 Tranformer Oil Temperature or Presure Not Ok, (OCB) Oil Cooler Blower
  • If OCB impeller and its casing got physically damaged:
    • Then Isolate Damaged OCB:
      • Open MCB 59.1/1 (HB-1) or 59.1/2 (HB-2)
      • Open Concerned SR Oil pump MCB 63.1/1 (HB-1) or 63.1/2 (HB-2)
      • Open concerned TFP ( Transformer oil pump) MCB 62.1/1 (HB-1) or 62.1/2 (HB-2)
  • ⚠️Operate all above MCB “after opening VCB and switching OFF MCE”.
  • Then isolate concerned Bogie-by-Bogie using “isolating switch (154)” located in SB-1 .
    • then Switch ON MCE ➡️ Raise panto ➡️ close VCB.
    • after that Work the train with one Bogie after informing TLC.
154 bogie cutout switch


LSDJ & LSFI will glow

VCB will not close

  • If the same message repeats and MCB’s are normal:
    • Then Bring throttle to “0” position.
    • After that Switch OFF and ON MCE once again.
      • Then Raise panto ➡️Close VCB ➡️ Resume traction.
  • If not successful:
  • Check “DDS Message”:
    • SLG1:0019 🔜Isolate SR-1
    • SLG2:0019 🔜 Isolate SR-2
    • if not successful within 20 minutes, ask for relief loco.

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