why transformer ratings in kva?

Answer Posted / amarjeet kumar

Transformer have basically two types of losses one is copper loss and other is core loss, and copper loss depends upon current, and core loss depends on voltage so it rating is measured in multiple of current and voltage i.e in KVA.It is independent of power factor. Thats why its unit is not in KW.

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

(1)The demand for electricity , the amount of renewable generation available, the amount of fossil fuel generation available and the cost of the fossil fuel generation are shown in table below period(hrs) demand(MW) renewable (MW) fossil- fuel(MW) cost of fossil fuel(MW) 00.00 - 01.00 2000 1800 2000 30 01.00 - 02.00 2300 2500 2000 30 02.00 - 03.00 2500 2700 2100 45 03.00 - 04.00 2900 3100 2100 50 04.00 - 05.00 2700 2600 2500 45 05.00 - 06.00 2400 2000 2700 50 06.00 - 07.00 2200 1800 2000 36 07.00 - 08.00 2100 1600 2000 36 Assuming that the renewable generation incurs zero cost, determine an optimal generation schedule(specifying the amount of renewable generation and fossil fuel generation used in each period, the cost for each period and the overall cost for 8 hours.)

1425


why we can stote dc? why we cant store ac?

1628


Why slip ring ind. motor power consumption is low compare to induction motor .same 90 kw motor used same load output

1259


Why saturation region slowly shifted in the left side?

1459


how u measure/calculate renge of capacitor,capacitor has no any rating tag.what is the theory of measure of capacitons.

1590






what is kvarh? Please define it With calculation General motors ?

706


What is thresh hold value of current?

1607


How is magnetic leakage reduced?

729


What are all present producing cost of Per KWH of various Fuel?

2124


In case of generator when we consume more power produces by it why load on generator increase and starts sound more. and how it is adjusted..

1442


Why dry type cast resin transformers tap link blast in HV side while power shut down times on load?

1806


What is the power requirement of tamil nadu for one month?

1566


what is the id1 & id2 setting in differential protection relay of CSPC?

2293


Why are cables rated for 40 KA for 0.25 Sec fault current rating?

1522


Starting times for soft starter & power factor is thier any standard or datas available in manufactures list. Kindly suggest.

1469