Answer / arun.giit

as all the losses is in the form of power;and in transformer
iron loss is directly propertional to voltage(V) &copper
loss is propertional to current(I).it is not depend upon
powerfactor,so it's rating is in KVA.

Answer / shaikh

Cu loss of transformer depends upon current I and iron loos
depends upon voltage V...So as we can say that the total
losses of the transformer depend upon VA (volt-ampere) and
independent of phase angle between V & I (i.e. pf
angle)...so transformer rating is in kVA & nt in KW...

Answer / tin`

Becuase kVA is the 'total' apparent power. The load
connected to the transformer can have different power factor
(pf) and so the kW rating will vary according; kW=kVA*pf.
The transformer rating is stated in kVA in order to show
the full capacity of the transformer and then the real
power (kW) rating can vary with power factor.

Answer / salim

bcz
kw=kva×pf and load on tranz.is not constant.So pf is varies with load.thats why traz.rating is always in kva not in kw

Answer / mohan singh

Transformer ratings are in KVA because the power factor is
for the load on which transformer will operate is not known
in manufacturing and KW = V x I x Cos Phi.so it is Rated in
KVA and not in KW.

Answer / peter

coz KW or HP makes no sense.....transformer is not a power
conerter involving mechanical energy.....i mean...it just
transfers electrical energy ....

Answer / bob

Because transformer is power source and active power and
reactive power drawn from it depend on load nutural.

Answer / suresh

Because transformer have electrical output

If any one's require of phoenix contact like( relay , termilnal block , surge protection device ) , product please contect me 09878206357 chetan verma

0 Answers  

What is the name of the winding to which supply is given?

0 Answers  

why the electric train touches only one conductor n where is the neutral n it will be running 3-phase or 1-phase?

3 Answers  

what is the full form of KVAR

6 Answers  

What is Electrical Engineering?

13 Answers   L&T, NTPC, Wockhardt,

what is the difference between the voltage of 5 volts capacitor and and 5volts battery?

0 Answers  

Dear Respected sir how to test ABB REX521 protection relay by relay tester.

0 Answers  

Do these factors (settling time, peak time, steady state error, overshoot, rise time, MPOS (Maximum percent over shoot)) are the part of first order, second order, higher order, linear, non-linear, open-loop, closed-loop, homogeneous & non-homogeneous systems ?

1 Answers   Limton,

diff. between star, delta connection?

4 Answers  

What is cable gland,why does use for?

5 Answers   ABB,

How do determine the Size of a Droop Current Transfomer for Paralleling of Two Generators, Say I need a Droop Current transformer for a 600 kW generator need to be parallel with a 800 kW generator, etc.

2 Answers   JK Cement, MPPGCL Madhya Pradesh Power Generating Company Ltd, PNG Power,

Why soda is added with water in Lrs of Sliipring motor…to Increase or decrease resistance of water?

1 Answers