Why Earthin is not required in Xformer primary side when it is in Star / star?

2 Answers  

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what do you mean by earth fault in transformer?

2 Answers   L&T, UPL,

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What will happen if DC supply is given on the primary of a transformer?

6 Answers  

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tell me working of air circuit braker.

2 Answers  

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what is the difference between DOL starter&star-delta starter& automatic star-delta starter

2 Answers   Dalkia, GSK,

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What are the technical reasons for soaking transformers for various times before allowing them to pick load after a fault ?

4 Answers   GE,

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why the NGR (neutral grounding resistor) always OFF during DG off?

0 Answers   Bhel,

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What is the difference between shortcircuit current, rated current of cable & MCB with example? What will be the size of cable required for 5.5 KW motor (Full load current 10 Amps approx.), Starting current with DOL is 120 Amps. Aprrox. Short circuit current with LLLG fault is 2000 Amps Approx.

0 Answers  

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What is the maximum current carrying capacity for both copper and aluminium cables for 1sqmm?

2 Answers  

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Why should we use Star-Delta connection in step down power transformers?

7 Answers   L&T,

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75 kw motor take 45 amp in no load delta in star 10 amp but in load it will take 160 amp but IR velue of winding above 500 at 1kw ph to earth and ph to ph. what problem it should be?

0 Answers  

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how does WTI work ?

0 Answers  

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