why generator and t/f ratings given in kva & motor rating
is in KW?
- 6 Answers
- 13472 Views
- I also Faced
- E-Mail Answers
Answer Posted / pillay
We buy/fix a motor to do a specific job.Job done is measured in watts.So a machine say a pump will use up to 3 KW to run as designed than we fix a motor of 3KW or slightly bigger to run it.Now the motor is 3KW or bigger say 30 KW and the voltage is AC or DC operated is up to you.
generators are rated in KVA because we dont know at what pf will it be operated. Say you have fitted a pf correction board to maintain at 0.95pf, you dont have a guarantee it wont breakdown or take some time to adjust. What is important the generator voltage is constant and the generator dont trip or burn.So if the pf can change anytime the current also can change anytime this may make your generator to trip on overcurrent,overvoltage(leading pf)or even destroy your genset.By rating your generator by KVA with a constant designed voltage you can know the maximum current the genset can give irrespective of pf.It is a safer and sure way of protecting your generator.you can even load yor genset at 0.2 pf so long you dont exceed the rated amps or KVA.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
Do you need any help with FEWA Electrical Supervisor exams?
what is the condition for YnD11
kindly send me 11KV MV motor differential protection procedure by primary injection method.
Is there a standard depth of gravel fill in Substation Switchyard? Please give a design/drawing. Thank you.
WHAT IS THE MEANING OF BALANCED / UNBALANCED IN STABILIZER TYPES.
Please nybody say, weather the result of Bharat Oman is declared or not? Probable date of declare???????
Why neutral point is consider as zero potential?
What products have you designed which have entered high volume production?
pls,send the previous year written test questions.
As i want some model question paper in basic computer science and history please send me immediately sir
could anybody able 2 send me jindal steels previous papers fr electrical steam....pls send 2 my id if possible....sirisha.shaik@gmail.com
What will be result if we connect LT votage to the terminal of HT motor?
what is meant by IGBT how they differ from tyristor ?
Define the overload capacity of the motor?
I want single line diagram for AMF & DG syncronizing panel
