why causes the burnt of AC Electrical Motor ?

Answer Posted / zahid noor

This question is wrong, it should be what causes ARE
RESPONSIBLE FOR burning of ELECTRICAL motor.
The answer is Motors are burnt due to over heating of
windings, insulation failure,bearing/bush wear & tear, lack
of maintenance like greasing in rotating DE & NDE side ,
under voltage, over voltage & above all due to lack of
protection relays ie if bimetallic over load relays with
proper setting as per running load & Full load current of
motor is provided, motor can not burnt & it will trip on
any abnormal condition.

Is This Answer Correct ?    74 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How to calculate the value of earth capacitance in a transmission line.

1782


How many Zones can be in Conventional type fire alarm system & how can we detect the fire in Conv. type FAS?

1368


I HAVE BEEN SELECTED FOR APGENCO A.E(ELECTRICAL) 2008.HOW MUCH WEIGHTAGE FOR INTERVIEW AND WRITTEN TEST.HOW I HAVE TO PREPARE. PLEASE GIVE INFORMATION IF U KNOW.WHAT ABT G.D THIS TIME.CALL RATIO 1:2

2419


Installation method of self treated earth electrode.

1472


How to checked frequency drive output voltages?

689






what is the voltage between earth to neutral in lift.

1335


what is KSR type transmission tower? What is LSR type transmission tower?

4619


What is the meaning of HT Trivector Meter ?

1941


What is the difference between a Root Locus plot and a Bode plot?

767


Sate maximum power transfer theorem?

693


What is the real function of reverse power relay in generator panel while syncronising?

1599


What is meant by coupling capacitor?

645


how to select fuse rating for a 3-phase motor ???

1340


What is the criteria that generally follow by distribution licenses to fix contact demand of their industrial customers?

1100


when we have to purchase the transformer by own i.e how much load will preferred HT connection?

1191