Dear All
we change the repair shop contractor . he check the rotor completely and perform bar to bar test . it was ok ( 0.101 to 0.098 ohm )
he believe that the burnt spot is related to moisture which has been inserted to space between bars and caused to damage the insulation bandage .
so he...
Thank you in advance for comments .
we will do bar to bar resistance test and check the results , so if we find out the acceptable result , is there any suggestion for make a safer operation ?
again : is it possible to repair the damaged spot without rewinding the entire rotor ?
Dear John
1- Motor was in operating condition and working fine till we find out the burnt spots during periodic maintenance .
2- the question is "is it possible to repair the damaged spot without rewinding the entire rotor ?"
3- is it possible to run the motor at the current condition ?
4- what...
Dear All
Recently , during periodic maintenance we observe two burnt spots on edge of the commutator bars (near the risers). so we worried and perform the electrical
tests and find out the results as below : (Motor spec: DC Motor 930 kw - 1500 RPM - 800V - 1227A)
1 - Insulation Test ...
