Answer / sudipt jena

Scott connection is done to get two phase supply from 3 phase input power. If we directly pick two phase from three phase supply , then the circuit becomes unbalanced.

why moisture formation found in XLPE Armoured cable outer sheath

0 Answers  

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What is Diff btw MCP & MCB????

10 Answers   Athena, Emerson, Suzlon,

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how much kn lightning arrestor is used in 11kv line

8 Answers   Power Grid,

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transformer phasor diagram under load explain it?

0 Answers  

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can i use 10 mfd + 6 mfd instead of 15 mfd capacitor in single phase motor as running capacitor

3 Answers  

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why transformer is rated in KVA ?

5 Answers  

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difference between EMVT, PT & CVT ?

9 Answers  

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How Humming noise generated in starter motor which was used the start the engine in a vehicle/car/Truck?.Moreover Starter motor was operated in DC power supply. Can you guys clarify ?

2 Answers  

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A ii kv 1200 A Breaker combination fixed in a cubicle. How many ampere Fuse is required? If fuse is not using, Why?

0 Answers  

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why we are giving D.C. supply to field of an alternator, why can't we give the a.C. supply

12 Answers   APTransco, Proman,

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is it value of power factor is more than unit. whats effects in the source supply

0 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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