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

Answer / m.anand

copper loss and iron loss depends only on current and
voltage there is no phase angle involved in between voltage
and current.so powerfactor is not factor affecting
transformer rating ...
hence transformer ratings are in KVA

Answer / jd

Since we don't know the type of load that the transformer would be bearing in future. thus the manufacturer specifies its rating in KVA or MVA

Answer / gopalakrishna

transformer ratting are always in KVA or MVA why because
transformer iron losses are depen upon current, and copper
losses are depending upon voltage hence the rattings of the
trans former rattings are in 'kva'

WHAT IS THE USAGE OF Buckoltz relay IN POWER TRANSFORMER AND AND HOW ITS FUNCTIONS?

3 Answers  

---

how do we calculate length of starting time and repeated starting of a direct online starter?

0 Answers  

---

What will Happened if the polarity of CT is changed?

13 Answers  

---

1. What is differential relay? How it operates?

3 Answers  

---

what are the functions of power modulator?

4 Answers  

---

---

what is the static device rather than xmer which work on same principle as xmer?

18 Answers   NTPC, Power Grid,

---

what is the defination of electrical engineer.

33 Answers  

---

flush point of transformer?

2 Answers  

---

Actuality I have at home electrical panel with 220v 50hz, and I want to converter from there to 110v 60hz, to wiring on the half of my house. Also I like to keep another half of my house with the original 220v 50hz. What is the best and safety way to do?

0 Answers  

---

difference between elcb and rccb

3 Answers   ITC Infotech,

---

why the neutral line is not giving shock to us if we touch it ?

0 Answers   GPREC,

---

Why transformer use to generator neutral earthing purpose ?

1 Answers  

---