What are the causes of motor failure?

What are the causes of motor failure? 
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1 Answer

Answer :

a. Corrosion or rust.

b. Excessive moisture (winding IR low and bearing lubrication loss).

c. High ambient temperature.

d. Poor ventilation.

e. Inadequate lubrication.

f. Misalignment.

g. Oil and dirt.

h. Excessive starts and repetitive surges.

i. Persistent over loads.

j. Shaft currents (bearing pitting).

k. Mis application.

l. Manufacture defect or wrong design.

m. Deterioration with age.

n. Maintenance improper. 


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