Answer / k.prakashchandra

Check the brushes ,as tripping is probably due to unbalanced
current if 2 OCR and EFR protection is adopted

ell me capacitor bank chossen formula.load in KW

1 Answers  

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How does zener phenomenon differ from avalanche breakdown?

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What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.

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I have 30 kw motor load & i have selected 10 kvar capacitor bank for power factor improvement.my existing p.f is 0.85 & proposed p.f is 0.99 so ,is it right selection? 2 nd question how to connect c.bank whether in delta or star connection & how to decide it?

1 Answers  

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How does frequency affect KVA rating of a transformer? If a 500 kva, 500 to 250 v, 60 hz t/f normally used in Canada is to be operated in Europe on 50 hz frequency then how will its KVA rating change? a-increase b-decrease c-remains same

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What is the meaning of dsl line in eot crane , and why it is Called down shop lead ? Pls tell exact answer.

3 Answers  

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Rccb trip or not with out neutral connect in three phase welding machine

1 Answers  

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what is alternater?

8 Answers  

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why neutral can not used in three phase motor connection?

1 Answers   HSL,

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what is ring main unit?

1 Answers   Otis,

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What is the formula to calculate capacitor bank rating for a certain load.

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we all know that in transformer, voltage and current are inversely related i.e. Vp/Vs= Is/Ip....so in standard CT..we have a ratio of 200/5...that means our voltage should increase by ratio of 40..althoug that is not the case...because that requires high insulation level.and pratically not feasible......can anybody clarify my ques.......thanx

2 Answers  

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