What happen when change order of CT in GIS feeder?

0 Answers  

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What is the difference between KW & KVA ?

9 Answers  

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In supply RYB are mentioned. But in transformers, why they are mentioning XYZ?

3 Answers  

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In stepdown transformer 11/415 volt two nos.(R & Y)HT side fuse is blown ,what will be voltage of ry,rb,yb in secondary side

5 Answers   NTPC,

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what is meant by phase transformation ratio in induction motors?

2 Answers  

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why the neutral point of star connnection oscillates?

3 Answers   Avalon,

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if u have single phase load (un balance) and the main power cable is 3.5core means netural is .5 of phase and can the three phase current make the return paht in .5 neutral.

1 Answers  

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Starting Time of LT & HT Motor

0 Answers  

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what is the difference between contactors & relay.

2 Answers  

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Any one can explain if there is any harm from humming noise heard from air circuit breaker : we have 415 switch board having two incomers from transformers 3.3KV/415V , when bus coupler closed, and open one ACB incomer to work in one of the transformers, the current started hunting around 50 Amps, and heard humming noise from the air circuit breaker, although the load current was only 1200 amps while the ACB capacity is 2500 Amps, and the transformer 1600 KVA. The same didn't happen when taken the other transformer offline. Why this humming noise and current fluctuation? is there any implication or danger, bearing in mind that we just returned everything back to normal and stopped the maintenance of the transformer. Shall we go ahead and ignore this noise?

6 Answers  

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why do we require two lines one phase and a neutral for an ac transmission..is neutral potential zero..?if yes y carry a neutral line from generating station itself...why dont we take it from ground

1 Answers  

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What is frequency?

4 Answers   BTCL, TCS,

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