Answer / k.prakashchandra

charging time =4/3 hours /efficiency.back up time 4/load in
amps .hours.

As per principle we say in three phase supply ,the voltage is producing by phase angle between two phase so two phase is needed means then why we using three phase ?

2 Answers  

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how calculate the current faut level

2 Answers   ABB,

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what material is the electrical housing wire made of? is there any difference for the telephone lines?

0 Answers  

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What is the difference between the impedance percent and impedance voltage ?

0 Answers  

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why we changed the polarity of DC generator ?

1 Answers   DMRC, Microsoft,

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what are the different types and applications of compressors?

1 Answers  

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what is sevice settings for mccb?How can be it setted?

0 Answers  

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what is transformor oil gread

0 Answers   Idea,

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I HAVE CONSUMER WHOSE POWER FACTOR IS 65% I WANT TO INCREASE IT TO 98%.HOW TO CARRY OUT?

7 Answers  

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how to find out capacitor range?

2 Answers  

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If a HV Underground Cable (13.8KV) is layed in the ground below 1.5 Mtrs and any building construction is done on the Cable route. IS this allowable or Not? What should be the clearance. As per ISO construction on HV cable route is safe or Not? Why? Can any body suggest the site for my question?

1 Answers   ZCL,

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last week we did the REF relay test by closing single pole (R phase) of CB and apply 380V at the primary of delta transformer. we get 33A at the primary of the R phase star end. but we get 380A at both R an B in delta side. how and why?

1 Answers   Siemens,

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