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Why Lightning arrester used? Can we use piece of iron as a
core material of transformer, if No, why? In CRGOSS
material what is meaning of cold rolled grain oriented? Why
Impegrenation of Transformer is done? Properties of
Insulator? what is phase angle? Testing of transformers
(Routine & Monthly)?
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Answer Posted / dhiraj
In power system when lightning occures it brings ehv to the
earth which can damge your Power system badly to avoid that
we must use arresters with solidly ground to divert the
lightning path,
If we use Iron as core material the core losses will be
like hell which will make trafos efficiency to very less
and due to that eddy current increase will make heating of
trafo.
for further details read power system engg book.
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