why transformer ratings in kva?

Answer Posted / saran

normally rating of a equipment depends upon heat , which
depends upon loss. as in transformer both copper loss &iron
loss dont depend upon power factor . so transformer rating
is in kva.

Is This Answer Correct ?    1 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

how external lighting design? please give examples?

1433


the site measured knee point voltage of protection class CTs should be greater than rated knee point voltage? what about meetering class CTs. Should it be below the rated knee point voltage?

1639


How to do stting of vl250 siemens MCCB

2490


I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?

1534


What are different types of control systems?

748






what ispositive, negative, zero sequence impedence?

1590


what is the main function of capacitors in mccs.

1272


what is the basic construction diffrance between servo motor ans sqiralcage induction motor

2018


A commercial Building is designed with 14th floor levels with indoor substation of three phase transformer with rated capacity of 1000 Kva.The transformer delivered 65% of its rated capacity at 0.67 power factor lagging.Because of low power factor, the power customer was penalized and certain cost was charged accordingly based on every point percentage lower than 85%.This situation may repeatedly happen on the succeding energy bills of power customer.The power customer is desired to improve its historical power factor of 0.67 lagging and no further penalty be impose by the local power company on the next bill. Q: Identify the appropriate solution you want to offer to Client?.Justify SCIENTIFICALLY and MATHEMATICALLY the principles behind the solution.

1346


what is meant by re-rolling motor? how it differs from standard motor?

1466


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

1894


How short circuit MVA(Fault MVA) in a power system calculated for calculating number of earth plates ?

1817


How to calculate LT XLPE CABLE for 11 kv / 433 v , 1000 kva oil type transformer system?

1358


plese send me the oces/dgfs sylabus and previous year question pattern of electrical engg.?

1802


WHY IL=IPH IN STAR AND WHY IPH=IL/1.732 IN DELTA? WHAT IS REASON BEHIND IT?

5595