What happen in ups if phase reverse?

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What will be cross section area of copper conductor for carry 2000 amps & 2500 amps....sq.mm.?/

3 Answers  

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i am using star-delta connections with reverse/forward direction motion of the 75hp induction motor.What should be the ratings of Main,Delta and Star contactors and why?

1 Answers  

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Generally we denote power in 'p',voltage in 'v'but why can't we denote current in 'c' instead of I.

4 Answers   Bhel,

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what is static excitation and dynamic excitation of synchronous generator,scr excitation is a brush or brushless excitation?

6 Answers  

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specify the inbuilt protections in DG

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if 1hp jet motar drop voltage when start from 220v to 120v give the reason and solution.

1 Answers  

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how to get electrical supervisor competency certificate in gujarat. i did 3 year diploma in electrical

0 Answers  

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grr resistance & contrator malt continuous

0 Answers   Pioneer Labs,

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what is mutual induction principle?

2 Answers  

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i want to ask that as everybody knows that in star connection on star point is called neutral. my question is that why on that poin called neutral. what is the reason behind it. what is the logic behind it. i heared somewhere that on this point all phases current become zero thats why. if this answer is right then prove why on that point is current become zero. if this answer is not right then tell me the right answer. post ur answer here or on my mail address. m.ikram786@yahoo.com m.ikram555@gmail.com. thanks.

1 Answers  

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What is mean by hot and cold loop testing? What is the difference between them?

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