Answer / g.chandrasekar

body earth-1,
nutral earth-1,
comman earth-1{nutralearth-2,bodyearth-2},
total earth= 3,

Answer / nazeer

body earthing and neutral earthing

Answer / soma sekhar

No earthing is reqiured while commissioning of transformer

Answer / skhan

there is no comissioning transformer

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how to convert 1 phase power to 3phase power by using induction motor. . . .

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why hv winding is not placed near to transformer core

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Sir, how to calculate the voltage drop and short circuit current of cable. please give me example and formulas.

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3 Answers   Sabic,

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Hi Everyone ! My Name is Hakim ullah khan please i need formula of Cable Rating because i want to calculate by self without check any Table Chart... Thank you.....

0 Answers  

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WHEN TWO ALTERNATORS ARE OPERATING IN PARALLEL, EXPLAIN WHY IT IS OBJECTIONABLE TO OPERATE ONE AT A LEADING POWER FACTOR AND ONE AT THE Lagging power factor?

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what is the difference between H.T Or HV lines...?

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Dear Sirs, I am a technical persons.In one of our Electrical Sub- Station, We have installed three numbers of 1250KVA ,11KV/0.415KV Transformer to feed the Factory load. We have found some abnormality. In one of our Transformers the leakeage current from transformer body to earth through earth continuity wire is almost 86 Amp but in other transformer it is (5-10)Amp. where the load current on three phase and neutral are respectively 1360Amp,1400Amp,1370 Amp & 176Amp. So please any technical person help me about the reasons of this situation and how I can rectify the fault. Moreover,I have measured the earth resistance of the Earth continuity wire which is less than 1 Ohm. Thanks Tapas Barua

3 Answers  

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