why transformer ratinh is in KVA????/
Answers were Sorted based on User's Feedback
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.
Is This Answer Correct ? | 20 Yes | 1 No |
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...
Is This Answer Correct ? | 14 Yes | 0 No |
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.
Is This Answer Correct ? | 1 Yes | 0 No |
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
Is This Answer Correct ? | 1 Yes | 0 No |
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.
Is This Answer Correct ? | 1 Yes | 1 No |
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 ....
Is This Answer Correct ? | 1 Yes | 4 No |
Answer / bob
Because transformer is power source and active power and
reactive power drawn from it depend on load nutural.
Is This Answer Correct ? | 1 Yes | 5 No |
Why the earth to phase voltage is high 250 compare to other two phases
diagram for soft stater ?
whata is battery charger ?how many cells connected for 110v?
what happens if we connect two parallel ideal voltage sources across resistor?what is current flowing through resistor?
what should be correct gas pressures to be a 1.5 ac unite
What is the size of cable to be used for a Space Heater in UPS 160KVA of carrying 10 Amps current with 240 V ,1 Phase?
oil sample dielectric test gives the insulation rupture voltage at 26 kv. is this transformer safe to be operated . The working voltage is 11 kv
Do closed loop systems require manual input?
what is cogging in motors?
what is the working principle of energy saver control panel. please give the complete calculation & theory.
THERMAL CAPACITANCE IS MEASURED IN..................................................
What will be the capacity of the generator set which can be used for my 2 ton window air conditioner ?