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Wednesday, February 22, 2017

Reason for motor running hot



Mechanical problem

1.      Bearing wear down

2.      P/P impeller jam

3.      P/P gland too tight

4.      Any blockage

5.      Shaft installignment-(after o’haul)

6.      Fan not working

7.      Cooling fan dirty – too much painting

 
 
Electrical problem

1.      Single phasing

2.      High voltage – speed-high/load-high/overheat

3.      Low voltage – current increase to maintain require torque

4.      Low frequency –flux-high/current-high/fan speed-low

5.      High frequency – speed-high/load-high

6.      Repeated start/stop

7.      Prolong starting

8.      Delta connected motot start on star & run on star

2 comments:

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  2. Thank you so much Abiya for your comment. If it is helpful for you then it's an inspiration for me.

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