Answer Posted / jay prakash

a wawe trap is the device which trap the high frequency
signals to enter into substation.
As XL =2 Pi w f L as impedence is directly proprtional to
frequency thus provide high impedane for high frequency
(carrier frequency)& vice versa.

lightning arrester prevent the substation from lightning
impulse, under normal condion impedace of air gap is high
enough for the voltage i.e no discharge, in case of
lightning high voltage appears around air gap and cause a
discharge through air and go to ground and prevent from
fault

What is frantic effect?

1278

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why the projects getting loss?

1957

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What is essential to prove safe isolation of electrical circuit?

1082

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if negative of DC supply used and positive is grounded through EGB, and if ELCB used in the system then is it sense the positive volatge and get tripped is it possible?

1879

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2199

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What is slope...? Explain slope 1 and slope 2...?

1624

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How can we measure earthing resistance test (Earth meggar) of Transformer neutral pit while in live condition?.

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What are electric motors?

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How Can You Relate Power Engineering With Electrical Engineering?

1246

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Mr. mohh sahid m not satisfied for ur answer to the que weather the size of transformer increases or decreases withchange in fr for more detail go to the answer given by me

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WHAT IS MEANT BY SHEATH VOLTAGE IN 132Kv cable?

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What happens if the negative to earth voltage is greater than positive to earth voltage in the battery of substation?

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