Answer / rajasekhar

because it transfer both voltage and current

Bt there is change in only ratings

in transformers for ex. 100mva and 400kv the secondary current is about 420 amps but for selection of bushing the capacity of selected bushing is 2000A why there is such big difference ?

2 Answers   ABB,

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what are the effects of variations in frequency when you are connected to national grid??

1 Answers  

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What are the classifications of oscillators?

0 Answers  

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How to calculate the electrical load for a standard telecom BTS shelter and choose the DG set capacity for the same load?

0 Answers   Quippo,

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what the purpose of protection signaling equipment in substation?

2 Answers  

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how can we rotate a single phase motor (without cap.)in reverse direction?

2 Answers  

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what are feeder pillars & panels?

1 Answers  

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How line capacitance & line inductance varies with increase in height tower.

0 Answers  

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how copper and aluminium wires or cables are choose for current rating? please provide copper and aluminium wire selection chart for different current rating ?

0 Answers  

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which electrical supply used for long distance traction 1.1-ph 22kv a.c 50hz 2.2-ph 22kv a.c 50 hz 3.dc vtg 4.1-ph 22kv 150 jhz

3 Answers   Power Grid,

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what is negative d.c. voltage, why this voltage is used in base transciever station.

0 Answers   Vintage Air,

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in case of three phase induction motor,when it is connected to three phase supply,why the magnetic field is rotets around the armeture?

5 Answers   Hindalco,

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