Audit of
following 2 Work Instructions was done in TM Shop. Report is as follows:-
Routine
test of 3-phase Traction Motor ( W 21.411):-
POints noticed:-
No Load Test:-
- This WI is outdated. Resistance measurement by DC current
injecting as mentioned in para 3.1.2 of this WI is done by micro-ohn meter
nowadays. Additional measurement of Induction and PF is being done in shop
which is not mentioned in WI
- Tests are to be done on testbed after clamping. Same should be ensured.
- Rotor crack test on LV as mentioned in para 3.1.3 is also not done
nowadays. WI needs modification
- Intial test on 100 V for 5 min as mentioned in para 3.1.9 is to be ensuered.
No load Characteristic, Blocked rotor (SC) ,
Dielectric and IR Test:-
- All being done religiously.
- Temperature probe calibration is done but , there should
be a jig for same.
- Some of the instruments/gauges used while testing are due for
calibration.Same done.
Test of
Assembled Traction Motor ( W 21.412):-
Points noticed:-
Dial gauge used for radial/axial play measurement
is due for calibration.Same done.
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