Answer / wareagle

Nothing to explain. Just look it up in a chart like
this http://www.energy-solutions.co.uk/cable_conductor.html

Answer / e.prem

140 A

how much earth resistance consider to commissioning the transformer?

3 Answers   Deccan Cements,

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We have 11kV/110V three phase indoor potential transformer in 66/11kV Sub-station, where the failure of PT is frequently happening and the rating of the PT is 0.2 class accuracy, with primary star and seconday (two cores) star connected. Some experts has suggested to not to connect the PT Primary neutral to the ground because when transformer neutal NCT connection is loose; the faulty current will flow through the PT primary neutral, resulting into failure of PT. My question is: Is it necessary to remove the primary neutral connection of the PT from ground? if not, what would be the reason for failure of PT. Please guide me.

2 Answers   KPTCL,

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Why the pointer of earthing of 3 pin top is made thick and long compared to the phase and neutral pin ?

3 Answers   Sanima Hydro Power,

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If the t/f capacity is 500KvA then what is Amps ratting of the main breaker.

5 Answers  

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the process cynide is used for?

2 Answers   MAHINDRA,

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directional over current relay when acted & how it works

3 Answers   NCC, ThyssenKrupp,

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why in 3.5 core means 3 core for phase and .5 for neutral?

1 Answers   Sodexo,

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Which motor is suitable for mixer grinders.

12 Answers  

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what is feed back and what are feed back amplifiers?

0 Answers  

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WHAT IS THE COOLANTS IN TRANSFORMER?

7 Answers   Bhel,

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all 3 current transformers (C.T) are burnt in a L.T Panel - what are the possible reasons

5 Answers  

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what is the difference between AC choke (inductor) and DC choke (inductor), working and design point of view?

2 Answers   Electrotherm,

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