Answer / koodalingam

To protect the primary winding of the potential
transformer.If you not earthed the system,the unbalance
voltage will appear between neutral and earth.This voltage
can damage winding.

Answer / vinod

in EHV single phase PT are using, primary one end need to
earth for taking stable 3 phase secondary from three single
phase PT

where is highest transmission voltage is used in india

2 Answers  

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What is Ohms law?

28 Answers   College School Exams Tests, KPTCL, L&T,

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how we arrange the hv side with delta connection in case 33/11kv of transformer.

0 Answers   Jindal,

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Why Transformer Neutral having one earth pit ( more earth electrode resistance) whereas body have many earth pit ( less earth electrode resistance)?

0 Answers   OPS,

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what is the principle of switch gear? where its function ?

9 Answers  

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How do you calculate of power factor, if it is lagging or leading for unit(1).

4 Answers  

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X/R ratio in 11kv transmission line is?

1 Answers   RRB,

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How can we step up ac and dc ?

1 Answers  

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What is the need of motor starter?

6 Answers  

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how to calculate the mf of kwh meter,if ct the ratio on meter is 100/5A

2 Answers  

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in electric lamp what is ballast. y its needed to start & stop lamp. what is ballast ckt.

0 Answers  

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WHAT IS AIR GAP VALUE IN MM FOR A 11KV BUSHING OF 11KV/440V DISTRIBUTION TRANSFORMER. AND AIR GAP VALUE OF 25 KV BUSHING OF AT TRANSFORMER OF 25 KV TRACTION. WHAT IS THE CALCULATION FOR THE AIR GAP PERMITTED FOR BUSHINGS AT DIFFERENT VOLTAGES.

0 Answers  

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