how much earthings are mendatory at a 25kva sub station?

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how much earthings are mendatory at a 25kva sub station?..

Answer / pckundapur@gmail.com

For pole mounted SS ,minimum 3 earth electrodes are
required. Neutral, metal parts including body and L.A.

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how much earthings are mendatory at a 25kva sub station?..

Answer / krajeshkumar1989

for every stucture,ct,cvt,la,isolator 2 eathing is madatory.

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how much earthings are mendatory at a 25kva sub station?..

Answer / niki

In 25 kva s.s. only 1.1 MVA fault level so , we should use oonly 2 earthing pit. One for body grnd and neutral grng.

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