Answer / aamod tripathi

The Iron and copper losses are determined by tests only. It
is guaranteed parameter. If not met . the manufacturer has
to be imposed with a penalty calculated according to the
life of the transformer.

However as a thumb rule. 63 MVA transformer will have 1 -
2.5 % of no load + copper losses.

Please brief working principle & construction of permanent magnet AC Servo motor

0 Answers   DRJ ARDE,

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can transformer develop three phase poer from a single phase source?

2 Answers  

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Why do we generate 3 Phase AC Supply? It is possible to generate 4 Phase and 5 Phase explain it?

3 Answers  

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I want to wire sizing calculator which website is available it

1 Answers  

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How will you calaculate the Ct ratio based on connected load 500KVA,and 11KV supply ?

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What is DPR relay, And what for??

2 Answers   Engro,

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how kva rating of transformer is calculated.

6 Answers   Fluor Daniel, Siemens,

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how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage.

1 Answers   FGI, OPS,

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how can we know the size of cable cross-section from current rating ?

3 Answers  

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what is voltage gradient?

8 Answers   Bhel,

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1 Answers  

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if two transformers are parallel & both have fault short ckt. impedance of 50KA in each case will it increase or decrease show example?

1 Answers  

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