Answer / k.prakashchandra

Depending on application. 1:1 ratio tr is for isolation of
earthed neutral of primary.

What is the formula to calculate the rating of a three phase trnasformer

1 Answers  

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what are the standard IR values should be of R-E, Y-E, B-E, R-Y, Y-B, B-R of VCB in closed condition and in open condition for 500KVA & 1000KVA transformers. and what is the acceptable range when tested by 5000V megger.

0 Answers   ME,

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what difference between thermal and bi-metal over load relay?

2 Answers  

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In 1000KVA Transformer why does we connect HT with delta connection and LT with star connection.Illustrate by showing formula?

4 Answers   Tata Motors,

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HOW TO CALCULATE LV CABLE SIZING?

2 Answers   L&T, MRF,

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what is the purpose of measuring % impedence?

1 Answers  

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What is YNyn Transformer? and what are the other types in this?

3 Answers  

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transmission line losses

1 Answers   SVS Constructions,

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In case of delta/delta transformer if the one phase is blown out then what will be secondary line voltage ?

4 Answers  

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Elaborate the term "rotating magnetic field"

2 Answers   APTransco,

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What is the safety factor is to be consider while selecting the switchgear and protection for electrical system

1 Answers  

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how much test voltage should applied for tan delta test.

2 Answers   Electrical, TATA,

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