why transformer calling in VA rating
Answers were Sorted based on User's Feedback
Answer / murali290
For any device the rating is given based on the losses occur
in it (loss is nothing but heat).In transformer 2 types of
losses occur 1.core losses: which depends on V &
2.cu losses: which depends on I only
but no losses depends on p.f.
therefore trasformer rating proportional to VI or VA
for large transformers the rating in kilo or mega ,hence
KVA or MVA
Is This Answer Correct ? | 3 Yes | 1 No |
Answer / praha tuty
Transformer has copper loss & iron loss. copper loss occur
in windings & it is due to emf.Iron loss occur in core due
to current. so in order to measure the both losses,
transformer ratings are in VA rating.
Is This Answer Correct ? | 0 Yes | 3 No |
Answer / rakesh maharjan
The KW rating is dependent on the power factor and power factor can be different depending the condition where as mostly 0.8, but if KVA rating is given we can calculate the KW rating as per our condition. So KVA rating is fixed and reliable to any malfunciton not to occur. so the transformer rating is given in KVA.
Is This Answer Correct ? | 4 Yes | 7 No |
Answer / pramod attri
it's using step up, and step down at same frequency..by
mutual inductance.. it case transformer calling in kv,,,
Is This Answer Correct ? | 0 Yes | 4 No |
Answer / rajeshambur
transformer have a two losses because open circut and short circut . two losses so transformer rating in va
Is This Answer Correct ? | 1 Yes | 11 No |
what is smart grid? why we use it? explain in detals bcoz i want give presentatin from it....
kindly tell me how the load on generator increase by just increasing the fuel of prime mover, as if for exampple 20 MW gen set is synchronized the load ramps from zero to 20 MW gradully and during this procress only fuel of prime mover increases. Which thing determines the load on generator with respect to fuel
How to megger test 11 kV cable and the acceptance IR value
why there is a humming noise in transformer
purpose of breaker contact multiplication relay?
work of choke in florocent tube circuit ?
What are the different methods for calculating Short Circuit Curren?
rajha power sector details
when we have to use UPF wattmeter and LPF wattmeter? what is the difference between UPF and LPF wattmeter in terms of construction?
how can we find CT coil not working ?
wath is skin effect?
What is class ab operation?