What is the equivalent circuit of a transformer and its vector diagram?

0 Answers   Bhel, Madhucon,

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a 230v transformer with step down ratio 19:1.it has 2000turns on primary and rated 25va calculate max primary current no of secondary turns volts/turn

0 Answers  

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what is meaning volt-hz ration,where is necessry tomaintain and why. specialy during increase the power of generator.

3 Answers  

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I am an electrical power engineer and arranged power system for a data center, I installed MCB, ELCB and erthing system TN-C-S. But some times several ELCBs Disconnect circuits at the same time! what may be the reason? (the ELCBs are 25A ,30mA)

9 Answers  

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Is LV shorted in magnettic balance test?If yes why?

2 Answers   Hindalco,

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What is short circuit analysis of electrical networks?What are the procedures to be followed for its calculation?

2 Answers   DLF,

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If UG power cable both ends are to be earthed or what? If not why?

0 Answers  

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What is the role of the 50 STUB protection at a GIS 400KV substation with SIEMENS protection relays?

0 Answers   Power Plant,

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What is tan delta & PPM in transformer? and whats its IS value?

0 Answers  

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What is the difference between ARC & SPARK?

4 Answers   OPTCL,

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why we define potections of Tourbo generator in Class A & B.

1 Answers   GIL,

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why high speed tripping relay is used in protection circuit why not normal relay

0 Answers  

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