1.Electrical
a) Overload
b) Overheat
C) Short-circuits
e) Open-circuit
f) Poor Insulation
g) Single Phasing
h) Starter Defects
2. Mechanical
a) Bearing Defect
b) Shaft Defect
c) Alignmen t
d) Driven -Machinery Jam
3) Fan
3. External
a) Dust & Dirt
b) Liquid Ingression
c) Submersion
d) Rodent Attack
e) Chemical Erosion
f) Vibration
4. Operational - Winding Overheat
5. Undefined
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