Answer / guest

Transformer EMF equation = 4.44 x Phi x f x N volts.
for same operating voltage if frequency is to be decrease then Phi must be increase.

Now Phi = Bm x A, where A is the Area of Iron Core
so it is clear that on decreasing frequency size of the transformer must be increase.

How to calculate the current carrying capacity of sized cables, and there is any formula. please send to 'than.achu@yahoo.com'

1 Answers   Blue Star,

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I am working in transmission network, one of my 66kv line having short distance about 6km, when sending end voltage is 67kv receiving end get 69kv, i want to know that, does distance affects in this matter, please explain in this matter & if possible answer me on my mail id, kaushikkumar.vanavi@getcogujarat.com, kaushik.vanavi@gmail.com

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1. What is differential relay? How it operates?

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