Interested to Buy Any Domain ? << Click Here >> for more details...
Why the transformers are rated in KVA. ? in new view.
- 2 Answers
- 5822 Views
- I also Faced
- E-Mail Answers
Answer Posted / pradyumna171
Power given to the transformer is Apparent power (K)
it is the supply power of the power house and the power
given by the transformer to the Load is the true power or
Active power which is actual used by the load and rest is
the reactive power i.e. square of apparent power including
iron loss & copper loss in KVA = square of true power in KW
+ square of reactive power in KVAR. A sound transformer
efficiency is 98% (input power- Iron loss (k) & copper loss
= output power).
For full resistive load (at unity pf ) a 100 KVA
transformer gives 100 KW (approx.) true power, and for
inductive power at .8 pf the same will able to give 80 KW
(approx.) true power, but the types of load (its pf) is not
know before which to be connected across the transformer,
this is only why the transformers are rated in KVA and it
is meaningless to discuss about the iron loss and copper
loss because the Inventor and UPS are also rated in
KVA.
In other hand or in simply we can
say due to unknowing power factor the transformer,
generator etc are rated in KVA. In heavy size transformer
copper loss is more and it vary with load and Climate i.e.
transformer oil condition but it is not main reason for
rating the transformer in KVA.
Pradyumna Chandra Panda
Berhampur Mob 9861357949
| Is This Answer Correct ? | 10 Yes | 0 No |
Post New Answer View All Answers
What is the meaning of C1, C61, C91 cable
why Lightning arrestor are made by 2 seperate stack of inslutor but why cvt are in single stack of insulator.
If I bring a basic electric meter from the States and hook it up in Costa Rica in a development that has only one transformer for the 50 homes, will it still be accurate regarding the usage of kilowatt hours?
What are the two segments of nyquist contour.
what is JE exam?
How to calculate the External Resistance required for 60HP slipring motor in case no any data of the Motor is available???
how to calculate cooling requirement of datacentre from electrical load?
what happens if dc supply is given and the remedies for it.
what are the reasons of CT circuit faulty in busbar protection scheme?
What are the advantages and disadvantages of closed-loop control system?
What is the formula to calculate the size of Aluminium and copper cable?
if we run a 3 phase machine on two phase what will happend??? given answer with solid reason please
what is a synchronizing lamp ?
What is difference and reason b/w -48V BTS system and 24 V BTS system. Plzzzzzzzzz tel me.
when measure the core loss of three phase distribution transformer or three phase reactor loss, one phase shown negative watt loss. why??
