what the reson to use phase shift( angle) like (dyn11,Dd5 or Dy0)are usedin power and transsmison line

1 Answers  

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Dear friends I want to design busbar for1600 kva transformer(i.e2100 amps) what are all the factors to be considered before selectinga busbar what are all the standard sizes of busbars what is the formula for finding current of copper and aluminium busbar

0 Answers  

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What is the intent of short circuit studies?

3 Answers  

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what is meant by motor protection relay & its working principle ?k

1 Answers   Pricol,

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Pls mail me utility & Dg related question with answer

0 Answers  

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if we know Fault level say 25 KA , How to decide busbar size for Distribution network of 1000 Amp Breaker ? Sample Calculation or Farmula Available or not ?

4 Answers   TCS,

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we have a 2000kva step down transformer at our site. The HT side is charged from 22000V. So the primary current will be 52.48A. So why the HT breaker(SF6 ABB) is rated of 1250Amps ?

2 Answers  

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what is excitor response of an excitor?

1 Answers  

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if the 10 hp motor name plate indicates rated current as 13.6 amp the what will be the thermal relay setting? Why? And in how much time relay will trip at the set value?

2 Answers  

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send me the upsc conventional papers of 2006

1 Answers   Juniper Networks, Siemens,

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what work will do diffrential realay DG set

0 Answers   IG Petrochemicals Ltd,

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When i went to a interview the interviewer ask me a question for that i cant able to answer him if anyone knows answer me How will you design a capacitor bank for a plant? if my p.f is 0.6 i have to improve it to 0.9 or 1 what kind of steps i have to do? and is there any formula for calculating this?

6 Answers   APNPDCL,

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