why causes the burnt of AC Electrical Motor ?

Answer Posted / yuvi

Most common reasons
1. Mechanical failure (lubrication, bearings and bushes
etc,.)
2. Insulation failure

Some more reasons I could think of
1. Abuse of the motor (use of ordinary motor like a heavy
duty motor)
2. Improper starters used, frequent restarting of motors.
3. Low quality power supply or wrong type of power source
(DC, 3phase etc.,)

Is This Answer Correct ?    16 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

1515


Why do power lines not short out when they fall into water?

1588


in general it is observed in power stations, the tertiary winding is used in higher rating Y-Y auto transformer but not in Y-Y power transformer. is the tertiary winding is compulsory then why it is not using in power transformer 

1408


wat is the current produced in a 5000v megger? when the positive and negetive terminals are touched on our body get s shock?

1579


List out the different frequency domain specifications?

860






how much allowable resistance that can be difference in motor all coils?

1914


How to calculate VCB rating for 33KV ,25 MW Power line?

1376


which of the following elements is not present in stainless steel

2144


what is the difference betweem star connected motor & delta connected motor?

1979


What is the slip speed?

755


What type of core material is used for metering C.T and protection C.T???

1772


What is the Surge suppresor? Why using in a UDB's and How it works?

1813


If mutual flux is 1.2wb & power factor is 0.8 lag , then what is the Useful flux of a transformer?

4103


1.why are not using acb 33kv ht side? is there any problem 2.what is difference between acb,vcb,sf6 breackers? 3.what is the function of invertor and convertor in ups?

1788


How will polarity test of Dy5 Transformer ?

1881