More on traction motors

Audit of following Work Instructions was done in TM Shop. Report is as follows:-

Dimension of Bare Mainpole and Compole Coils ( W 21.203):-

Points noticed:-

• Dimension measuring gauges ING 001 and ING-004 going forcalibration.

Crushing and forming (Pressing) of Bare FieldCoils ( W 21.204):-

Points noticed:-

• Pressing machine gauge for showing 100 T pressing force going for calibration.

• Forming jigs INJ-002 and INJ-010 are going for calibration.

Reports from shed:-

Discussions were held with SrDEE/Itarsi and SrDEE/Tata regarding brake hanger bracket and MSU respectively.

Traction Motor Manufacturing Shop

Audit of following Work Instructions was done in TM Shop. Report is as follows:-

Annealing and Pressing of Smoothing Reactor(SL-30)_ ( W 21.205):-

Points noticed:-

• Gauge for measuring 500 degrees annealing temperature being sent for calibration.

• Gauge for measuring 110 T pressure being sent for calibration.

Acid Pickling of Bare Field Coils_ ( W 21.206):-

Points noticed:-

• Acid submerging should not be done for 4 hours only instead of 8 hours as prescribed in WI.

Manufacturing of Smoothing Reactor Coil_ ( W 21.207):-

Points noticed:-

• This WI needs review/updating. 30 Turn preparation as mentioned in step 3 of this WI is not relevant anymore.

Brazing of Terminals & Connectors & Dressing & Finishing_ ( W 21.208):-

Points noticed:-

• Though flame profile is described for brazing in this WI, same may be deleted from WI as welder does the job without flaw as per his own judgment.

• Brazing Jigs INJ-003 , INJ-011 being sent for calibration.

• Gauges for final checking of coil ING21.09,21.011,ING.001 and ING.004 are being sent for calibration.