Answer / rakesh jha

A 3-phase transfomer required it's neutral to be grounded.
In delta-delta connection, neutral is not grounded. we use
small star-delta transformer to connect with delta-delta
transfomer and neutral will be grounded.

Answer / zizo

In cases where the neutral point of three phase system is
not accessible like the system connected to the delta
connected side of a electrical power transformer, an
artificial neutral point may be created with help of a
zigzag connected earthing transformer.

can HT cable or HT bare conductor used for LT line? is yes what would be the current rating?

2 Answers   ACC, wbsedcl,

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why capacitance effect is predominant in underground cable transmission and inductance effect is predominant in over head line transmission?

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what are factors to be consider to design a HT & LT motor?

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why dc motor runs slowly when dc supply is given?

2 Answers   L&T,

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3) How earthing is done? How it measured? Write the method for earthing? How the earth resistance is kept low?

1 Answers   Innovative Energy,

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0 Answers   Ispat,

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Why transformer rating in KVA? and Generator also?

6 Answers   Bhel, IEEE, Toyo Denki, Toyo Engineering,

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