what are the components of a start and stop motor control?

Question Posted / du1_ph

2 Answers
4106 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

what are the components of a start and stop motor control?..

suppose the motor is more than 5hp, two contractors,one
timer, two push buttons(no and nc)and one 230v relay is
required.because of star-delta starting.
but motor is below 5hp one over load relay,one contractor
and two push buttons(no and nc) is suffcient

Is This Answer Correct ?

4 Yes

3 No

what are the components of a start and stop motor control?..

Answer / mohd azharuddin

It depends on type of starting methods u r opting, for example u can use DOL METHOD which requires one overload protection relay, one contactor, two push buttons, one nc and one no elements but the disadvantage of this method is high inrush current so this method shoudnt be used for big motors

Another method is STAR DELTA METHOD in which u require one overload protection, three contactors, one for main, second for star, third for delta, one timer with relay logic, two push buttons, one no and nc elements, in this method motor is started in star connection for the first few seconds and then changeover to delta, by using this method we can reduce high inrush current.

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

what are the needs of electrical earthing.... other than protection?

5 Answers Eskom,

what is the diff.between neutral and earth?

4 Answers

why does spark appears when we swith on the light

1 Answers

why transmission lines traveled in high voltage?

5 Answers TATA,

what is derated current of power cable & what is formule to find derated current?

1 Answers Thermon,

What is ELCB?

9 Answers Bhel, CDS, IOCL,

how many safety really of DG sets.

0 Answers MBD, Nerolac,

1 no. 22 kV feeder is taken from state electricity board. 350 MVA is the S.C. MVA. now i am feeding this feeder to HT Panel having 2 outgoings which further supply to 2 Transformers. Can you please suggest me the type & rating of cables are 3 of these cables same? or they are different? please help...............

2 Answers TCE,

what is excitation/

0 Answers ABB, Tata Steel Limited,

0.5,1,1.5,2.5,4.0.6.0,10,16 square mm electrical wires how much take maximum current in 50htz

0 Answers SoftLogic,

why threre are two parallel lines in transformer's symbol?

11 Answers NTPC,

which type of motor we are using in local train???

4 Answers Asia MotorWorks AMW,

For more Electrical Engineering Interview Questions Click Here