Where voltage are high and current to be interrupted is low the breaker preferred is:

0 Answers  

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i have a wire.and the current flowing in that.when we cut the wire then why dont we seen the elactrons....

8 Answers   GM General Motors,

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How to calculate the size of cables (all minium/copper) for a particular load

1 Answers   BSL, Galaxy Power System,

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

2 Answers  

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present we are having 0.8pf but I want increase it up to 0.99 so what is the formula for it and how can i calculate?

3 Answers   ABB,

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draw singleline diagram of star to delta and dol starters

0 Answers   JCP,

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Hi, i want to know is meant by power quality? How it can calculated ? How we can improve?

1 Answers  

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I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?

0 Answers  

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What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection

0 Answers   ABB,

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what is meant by armature reaction & where its happen ?

3 Answers  

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How to calculate the transmission losses incase of overhead transmission lines?

6 Answers   Jindal,

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